NetFlow Support

Free cPanel Web Hosting with PHP5/Mysql

2011-10-07T23:19:00.000+07:00

Free cPanel Web Hosting with PHP5/Mysql - no advertising! Register now: www.000webhost.com We can offer you a free web hosting package packed with advanced features for hosting & building professional dynamic websites. We provide secure free web space with all the web hosting tools you could possibly ever need. Our package includes: - 1500 MB of Disk Space, 100 GB Bandwidth - Host your own domain (http://www.yourdomain.com) - cPanel Powered Hosting (you will love it) - Over 500 website templates ready to download - Easy to use website builder - Free POP3 Email Box with Webmail access - FTP and Web based File Manager - PHP, MySQL, Perl, CGI, Ruby. - And many more.. Click here to visit us: www.000webhost.com

cPanel is a Unix based web hosting control panel that provides a graphical interface and automation tools designed to simplify the process of hosting a web site. cPanel utilizes a 3 tier structure that provides capabilities for administrators, resellers, and end-user website owners to control the various aspects of website and server administration through a standard web browser.

In addition to the GUI interface, cPanel also has command line and API-based access that allows third party software vendors, web hosting organizations, and developers to automate standard system administration processes.

cPanel is designed to function either as a dedicated server or virtual private server. The latest cPanel version supports installation on CentOS, Red Hat Enterprise Linux(RHEL), and CloudLinux. cPanel 11.30 is the last major version to supportFreeBSD.

Application-based support includes Apache, PHP, MySQL, PostgreSQL, Perl, andBIND (DNS). Email based support includes POP3, IMAP, SMTP services. cPanel is commonly accessed on port 2082, with an SSL-secured server operating on port 2083.

Once installed, cPanel cannot be removed (without extreme difficulty). The server must be formatted, and the operating system reinstalled. Similarly, it should only be installed on a freshly installed operating system with minimal prior configuration.

History of cPanel

cPanel Inc. is a Texas corporation with primary offices located in Houston. The software was originally designed as the control panel for Speed Hosting, a now-defunct web hosting company. The original author of cPanel, John Nick Koston, had a stake in Speed Hosting. Web King quickly began using cPanel after their merger with Speed Hosting. After Speed Hosting and Webking merged, the new company moved their servers to Virtual Development Inc. (VDI), a now-defunct hosting facility. Following an agreement between John Nick Koston and VDI, cPanel was only available to customers hosted directly at VDI. At the time there was little competition in the control panel market with the main choices being VDI and Alabanza. cPanel 3 was released in 1999; its main features over cPanel 2 were an automatic upgrade and the Web Host Manager (WHM).

The interface for cPanel 3 was improved when Carlos Rego of WizardsHosting made what became the default theme of cPanel. Eventually due to internal problems between VDI and John Nick Koston, cPanel split into two separate programs called cPanel and WebPanel. WebPanel was the version run by VDI. Without the lead programmer, VDI was not able to continue any work on cPanel and eventually stopped supporting it completely. John Nick Koston kept working on cPanel while also working at BurstNET. Eventually Nick left BurstNET on good terms to focus fully on cPanel. cPanel has since been updated and improved over the years.

Monitor Network - Securing your network with OpManager Network Monitoring

2011-09-27T17:58:00.003+07:00

With OpManager, you will be the first to know of any security threat to your network. Be it an unauthorized user activity, or an outside intrusion, OpManager Network Monitoring catches it all.

The network security administrators are left to face many threats to the network security from the external world and also from within. The Firewall security events such as intrusion detection, virus attacks, denial of service attack, etc., anomalous behaviors, employee web activities etc, provide a wealth of information on potential threats. Even a small compromise can prove costly to the business. Ability to visualize enterprise security and detect security compromises is a essential component of a Network Monitoring solution.

Syslogs - Log monitoring as a means of ensuring security, is incomplete without monitoring the syslog, the events of Unix-based systems such as Linux, Solaris, HP,UX, IBM AIX, and other devices supporting syslog like routers, switches etc. Seasoned administrators monitor Syslogs to keep a tab on unauthorized authentications, user activity, network connections, critical system or application failures, etc all.

Firewall logs - The network security administrators are left to face many threats to the network security from the external world and also from within. The Firewall security events such as intrusion detection, virus attacks, denial of service attack, etc., anomalous behaviors, employee web activities etc, provide a wealth of information on potential threats. Even a small compromise can prove costly to the business. Ability to visualize enterprise security and detect security compromises is a essential component of a solution to Monitor Network.

Netflow - While it is ideal to take the required measures to prevent an attack, a means to get the acts together even when a damage is done is needed to ensure there are no further attacks. It is no secret that perpetrators of malicious attacks find new means to gain entry into corporate networks, making them the biggest targets. Irrespective of the size of an enterprise, such attacks are unaffordable in terms of financial implications and data compromises. Detecting the onslaught of any virus attack or worm attack and getting to the root of the problem becomes necessary. The network administrator must be able to watch for the spikes and predict the trend. This paves way to get to the source from which an attack originates and nail down the problem.

Alerting Mechanism - OpManager alerting is characterized by its real time alerting capabilities in addition to maintaining a alert history. OpManager Network Monitoring proactively checks for faults in a network by querying the devices periodically, listens for traps from devices, and also processes the system logs to generate corresponding OpManager alerts. Threshold based alerting aids in quicker resolution time.

Alerting Pull and Push modes - A Network Monitoring system must be able to proactively seek out faults by talking to the network resources (the pull mode) and must also be capable of receiving or listening to fault messages from the resources (the push mode). Receiving and processing SNMP traps, converting the log messages on various Network Monitoring systems into application alerts etc, facilitates fault management from a single console.

Monitor Network with Network Monitoring Tools

Businesses depends on their networks for data, communication, and supportive functionalities. Delayed performance and outages can affect the rear end line of your business. Monitor Network continuously makes you to locate problems and fix them earlier than they escalate. Network Monitoring is a decisive IT function saves money in network performance, employee productivity and infrastructure cost overruns. It is used to monitor an internal network for problems.

With the help of this process one can find out and support resolve snail-paced webpage downloads, lost-in-space e-mail, suspicious user activity and file delivery originated by overloaded, crashed servers, dicey network connections or other devices. This pertains to the activity of administering the functioning of a computer network by making use of specific tools. These Tools are utilized to make sure the availability and overall performance of hosts and network services.

This Tools are competent of tracking and reporting failures of devices or connections. This Tools generally measures out the processor utilization of hosts, the network bandwidth utilization of links, and other aspects of operation. It will oftentimes send messages over the network to each host to test its response to requests. If any failures, unacceptably slow response, or other unexpected activity is perceived, these Tools send out alerts to selected locations to inform system administrators.

With all the elaborated data that is traced out and collected on everyday, elaborated and complete reports are created without complications and also can be utilized by the management team and associates to aid enhance the corporate and strategic planning, budgeting process and formulation, and also enhance your regulatory compliance efforts. Monitor and resolve network outages quickly, troubleshoot performance bottlenecks and get the visibility you need to be in control of your network.

This functionality can make certain that your computer systems and applications are running with efficiency. Monitoring makes the job of assigning tasks and achieving goals much easier since you can work around the downtime. Another benefit is it initially gauges your bandwidth and resource consumption through your utilization and as a outcome, it improves the productivity of your network.

There are few types of tools available to Monitor including the tools used for ping, bandwidth monitoring, network device and node discovery, process and activity monitoring, port monitoring, security monitoring and so on. This tools might be employed at wide range areas from a simple home based to corporate network.

Instant accesses to the troubleshooting tools help isolate a fault quickly and embark on the actions needed to resolve a fault as early as possible. There is a collection of OpManager Network Monitoring helps perform the first and second level troubleshooting based on the nature of the network fault. Thirty day trial version is also available for your convenience.

CISCO2911/K9, Cisco 2911 Integrated Services Router, Top Selected

2011-09-27T17:58:00.000+07:00

Cisco 2911/K9,Series Integrated Services Routers, designed to power the next phase of branch-office evolution, deliverhighly secure connectivity with multiservice integration that can transform the workplace with a broad set of integrated services, rich-media support, and operational excellence. best for small to medium enterprise with high performance, offers embedded hardware encryption acceleration, voice- and video-capable digital signal processor (DSP) slots, optional firewall, intrusion prevention, call processing, voicemail, and application services.

2911/k9 Details

Enclosure Type Rack-mountable - modular - 2U

Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet

Network / Transport Protocol IPSec, L2TPv3

Routing Protocol OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, static IP routing, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), MPLS, Bidirectional Forwarding Detection (BFD), IPv4-to-IPv6 Multicast

Remote Management Protocol SNMP, RMON, TR-069

Features Firewall protection, VPN support, MPLS support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Web Services Management Agent (WSMA), NetFlow

Compliant Standards IEEE 802.3, IEEE 802.1Q, IEEE 802.3af, IEEE 802.3ah, IEEE 802.1ah, IEEE 802.1ag, ANSI T1.101, ITU-T G.823, ITU-T G.824

Power AC 120/230 V ( 50/60 Hz )

Dimensions (WxDxH) 43.8 cm x 30.5 cm x 8.9 cm

Weight 8.2 kg

About Security & Voice

Security

Embedded hardware-accelerated VPN encryption for secure connectivity and collaborative communications Integrated threat control using Cisco IOS Firewall, IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering

Identity management using authentication, authorization, and accountingand public key infrastructure

Advantages Of employing An Integrated Service Router

There are distinct advantages to using an integrated service router. The biggest advantage is that you don't require to purchase any added hardware to handle different functions. This gives you better control on the network, plus better security. For example, setting up a firewall on an integrated service router eliminates setting up of a separate firewall server, or enabling the DHCP services eliminates the usage of a computer as a DHCP server. In addition, you can administer a wired and wireless network with an integrated service router.

Ideally, an integrated service will also do encryption and decryption, which adds an extra point of protection to your network. Another advantage of an integrated service router is that you can have a cable modem and a DSL input or you can have several input channels. A DSL channel can be devoted to incoming traffic and another for streaming outgoing traffic.

Usage of an integrated service router makes sense if you have a large network or you are connecting manifold networks on it. If a office has a local area network, a wide part network, and internet connections, an integrated service router will make sense to suit their requirements. Alternatively, it will be apposite where you have a network depending on the internet and you want to control and defend your internal network from hackers and viruses.

Turning on the firewall services adds a coating of safety for your network. In addition, you don't need to install policies on your network clients, as the router will not allow a customer access to an illegal site. What an integrated services router provides to a small or medium sized business is faultless connectivity to the internet.

The integrated services router provides a number of services that in a conventional network setting would have required extra hardware. Computers, IP phones all share a single protected network by using an integrated services router. Therefore, at a small charge, a company can get manifold services from a single box.

This also makes running a network much easier. The integrated services router sets up multiple dedicated channels to provide flawless connectivity. Therefore, the local area network can have a variety of devices on it using both wired and wireless connections and interact within the network and to outer networks. Network administrators are aware of the problems faced in setting up multiple device networks and supporting them.

Assigning IP addresses, maintaining firewalls and providing high-speed network connectivity and security used to be a nightmare. If any tool went down, the full network would be disrupted. For smaller organisations, network management has traditionally been a difficulty. However, now with the integrated services router, these problems have been eliminated. Future loads on the network of any organisation regardless of the size are going to increase.

Therefore, the dependency on a trouble-free network is also going to increase. Therefore most firms will want to invest now in the future rather then be left behind. In addition, the dependency on different pieces of hardware, and their up gradation and maintenance has to reduce. Integrated service routers make networks more pliant and trusty.

Route Analytics and Netflow

2011-09-27T17:57:00.000+07:00

These days, enterprise applications are increasingly critical for delivering top and bottom line results from greater business process automation, and Internet users are consuming huge amounts of IP-based media such as music and video. As a result, both corporate and service provider networks are getting larger and more redundant networks to ensure traffic can be delivered. Unfortunately, complexity is also growing fast, causing traditional network management technology to hit its limits in ensuring high performance application and service delivery. The reason: IP is inherently unpredictable.

IP's distributed routing intelligence makes it efficient and at the same time unpredictable. IP routing protocols automatically calculate and manage traffic routes or paths between points in the network based on the latest known state of network elements. Any changes to those elements cause the routing topology to be recalculated dynamically. While this keeps IP networks highly resilient in case of network failures, it also creates endless variability in the active routing topology. A large network can be in any one of millions of possible active routing topology states. In addition, application traffic patterns are by nature unpredictable. Network problems - router software bugs, misconfigurations, hardware that fails (often after exhibiting intermittent instability) - can add to that unpredictability.

The sheer dynamism of IP routing and traffic poses severe network management challenges. A good example is troubleshooting: when a user or customer reports a problem that isn't caused by an obvious hardware failure, the root cause of the problem can be very difficult to pinpoint in a large, redundant network. For starters, the engineers troubleshooting the problem typically don't know the path the traffic took through the network, and as a result don't know the relevant devices and links in the path that carried the traffic, and whether those links were congested at the time of the problem. Without that basic information, troubleshooting can be reduced to a guesswork-based hunt and peck process.

Marketing Agency Is the Route to Elevated Google Rankings

When it comes to having a successful website, Google holds the key to traffic. An experienced search marketing agency is the best way to grab Google's attention. Of course there are other important sources of web traffic, including social networking sites like Facebook, and any properly planned internet marketing strategy needs to account for all the variables, but search engines like Google are the primary drivers of web traffic. Especially targeted web traffic -- where visitors are actively interested in seeking something out. Targeted traffic is particularly important to businesses, since they want the people who land on their website to be interested in buying a product or a service. Having someone go to their site quickly and immediately click away doesn't do much good.

Ending up on page 116 of Google's search results when potential customers are trying to find a business like yours is not likely to result in many sales. Most people don't bother clicking through the first few pages of results, let alone going all the way to the last page. Working with an experienced search marketing agency is the best way to elevate your search engine rankings and to increase the volume of targeted traffic reaching your website. Contrary to popular belief, this isn't so easy to achieve. Five or ten years ago, scattering your website with key words might have resulted in a boost, but search engines are more sophisticated. Tools needed to ferret out the optimal key words are often proprietary and placement of key words is much more critical now. Not to mention the fact that amateur website design and key word placement can make a website look unprofessional. The shotgun approach simply doesn't work.

To achieve real results with an internet marketing campaign it's more important than ever to engage the services of a proven SEO agency. Choose a company that specializes in the field, with a history of success. The agency should be committed to working closely with you, determining your goals, undertaking a holistic analysis of your website and researching your competition before presenting a strategic plan to enhance your site. The company should work with you throughout the campaign, providing progress reports and ongoing updates of your website's analytics in order to adjust the strategy if needed.

When done right, SEO can result in lasting success with search engine results, including higher Google search rankings. This, in turn, will lead to a higher volume of targeted web traffic -people who actually want to be on your site and are interested in your products.

Scroll On How To Make Linklist (List of links) Blogspot

2011-08-21T23:03:00.000+07:00

For those of you who want to make a scroll in his Linklist can follow the following steps:

From the dashboard page, click the Layout - Edit HTML.
Tick the Expand Widget Templates.
Then find the code type = 'Linklist' (use the Control F or F3).
Notice the code underneath it, like this:

Add the style = 'overflow: auto; height: 200px' after content', so it becomes like this

Scrolls

A scroll is a roll of papyrus, parchment, or paper which has been written, drawn or painted upon for the purpose of transmitting information or using as a decoration.

A scroll is usually divided up into pages, which are sometimes separate sheets of papyrus or parchment glued together at the edges, or may be marked divisions of a continuous roll ofwriting material. The scroll is usually unrolled so that one page is exposed at a time, for writing or reading, with the remaining pages rolled up to the left and right of the visible page. It is unrolled from side to side, and the text is written in lines from the top to the bottom of the page. Depending on the language, the letters may be written left to right, right to left, or alternating in direction (boustrophedon).

Some scrolls are simply rolled up pages; others may have wooden rollers on each end: Torah scrolls have rather elaborate rollers befitting their ceremonial function.

Scrolls were the first form of editable record keeping texts, used in Eastern Mediterranean ancient Egyptian civilizations.

Parchment scroll used by Israelites after Sinai was the first use of scrolls in the recording of literature before the codex or bound book with pages was invented by the Latins in the first century AD to differentiate their usage from that of the Judeans who were recently conquered. Nevertheless, scrolls were more highly regarded than codices until well into Roman times where they were usually written in single latitudinal column.

The ink used in writing scrolls had to adhere to a surface that was rolled and unrolled, so special inks were developed. Even so, ink would slowly flake off of scrolls. If the ink from too many letters is lost, a Torah scroll is no longer used.

Check website position in Google with the Keyword Specific

2011-08-21T22:14:00.000+07:00

Buddy never confused Checks Outstanding Website in Google with the Keyword Specific? for example there buddy SEO contest, now my friend was curious about the website buddy how ya are in position in the SERP with certain keywords, nah mate not not confused, my friend can use the tool below (please see link below):

Check website position in Google with the Keyword Specific

Keywords

Keywords are the words that academics use to reveal the internal of an author's reasoning. While they are used primarily for rhetoric, they are also used in a strictly grammatical sense for structural composition, reasoning, and comprehension. Indeed, they are an essential part of any language.

There are many different types of keyword categories including: Conclusion, Continuation, Contrast, Emphasis, Evidence, Illustration and Sequence. Each category serves its own function, as do the keywords inside of a given category.

PageRank

PageRank is a link analysis algorithm, named after Larry Page and used by theGoogle web search engine, that assigns a numerical weighting to each element of ahyperlinked set of documents, such as the World Wide Web, with the purpose of "measuring" its relative importance within the set. The algorithm may be applied to any collection of entities with reciprocal quotations and references [related to webpages]. The numerical weight that it assigns to any given element E is referred to as the PageRank of E and denoted by

The name "PageRank" is a trademark of Google, and the PageRank process has been patented (U.S. Patent 6,285,999). However, the patent is assigned toStanford University and not to Google. Google has exclusive license rights on the patent from Stanford University. The university received 1.8 million shares of Google in exchange for use of the patent; the shares were sold in 2005 for $336 million.

The value of incoming links is colloquially referred to as "Google juice

Seo Service

2011-08-20T19:52:00.000+07:00

See the title must have known what the purpose ....

okay do not need stale swapped again I'll share some sites that can direct auto submit our web or blog belongs to us, than we bother to submit to some search engines do we better use this site to submit your site. here's a site that direct auto submit:

    1. http://viralinviter1.com/submit/ [approximately 140url]
    2. http://www.fric.nl/ [approximately 100url]
    3. http://www.selbourne.com/misc/se-submission/index.php [approximately 50url]
    4. http://www.geocities.com/Athens/Agora/4229/url_search_submit.html [approximately 21url]
    5. http://www.freewebsubmission.com/ [certainly a lot of you know]

enable netflow on asa

2011-08-19T23:09:00.000+07:00

Can anyone give som short info about how to configure netflow on two 6500?
In short I believe this is the way to do:
1. enable netflow on interfaces I want to collect information from... (eg.
interface Gi1/0)
ip route-cache flow
2. configure where to send netflow data:
ip flow-export <ip-address> (and som other options)

An example from cisco.com:

configure terminalinterface serial 3/0/0 ip route-cache flow exit
ip flow-export 1.1.15.1 0 version 5 peer-as
exit
This is it?

is wireless internet

2011-08-19T22:58:00.000+07:00

Wireless is a cordless technology, in this case is to have telecommunications using electromagnetic waves instead of cables. Nowadays wireless technology is growing rapidly, by naked eye can be seen with increasing number of cellular phone usage, but it also develops wireless technology used for internet access. Wireless LAN using elektromagetik waves (radio and infrared) to perform data communication channel data from one point to another point without going through the physical facility. This connection uses a specific frequency to deliver the data, most of Wireless LAN using the 2.4 GHz frequency. Frequency is called the Industrial, Scientific and Medical Band is often called the ISM band, as described above. In some products this equipment with the ability to use PCMCIA Card 11 mbps. There is often a misunderstanding here. Referred to 11 mbps here is the ability to perform maximal Card a transmission, you could say the maximum number of upstream and downstream tools. This capability is not always able to walk as it is called 11 mbps earlier, if we calculate the loss will occur at least about 50%, so the tool is capable of transmitting data 5.5 mbps. This can be done if we use a point-to-point, meaning that on both sides using the same equipment. When you've done a point-to-multipoint, there will be a significant reduction, Multipoint here is analogous to the hub, so more and more connected with the multipoint there will be a decreased ability to transmit data. In a device that uses Multipoint Wireless LAN 11 Mbps or sometimes called Access Point, can accommodate approximately 32 individual users, but when connected is a LAN network as well, there will be a decrease in the ability of at least half, so a maximum of a Base Transceiver System (BTS) is getting 16 users from the LAN. This ability can be decreased if the BTS performed ... bandwidth such as 128 kbps, then the data distribution capability of the BTS would be reduced anyway.

Cisco 3K Switches now supports NetFlow export (NetFLow 3750-X, 3560-X, 3750-E, 3750G, 3560-E, 3560G, 2960, and 2960-S)

2011-08-16T22:45:00.001+07:00

A very good news for Network Administrators using Cisco 3K switches on their network and for administrator who are going to procure new Cisco 3K series. Let us start with networks which already have Cisco 3K switches.

In the past, we used to get a lot of emails and support calls to check if NetFlow export is supported in Cisco 3K series switches we had to unfortunately say “No”. So, tracking user-specific traffic on the network which has only layer 3 switch as a Cisco 3K series becomes impossible. Since there will be Proxy server or Firewall located after the Cisco 3K switch, which actually changes the Internal IP into NAT-ed IP and the edge router reports only the NAT-ed IP on the Analyzer report.

This problem can be solved with newer software IOS upgrade on Cisco 3k and 2900 series catalyst switches. The IOS version is 12.2(58)SE and supported platform are (3750-X, 3560-X, 3750-E, 3750G, 3560-E, 3560G, 2960, and 2960-S ). This IOS upgrade will enable NetFlow export which is different

from normal NetFlow export from Routers and other layer 3 Switches. I hope all are aware of NSEL(NetFlow Secure Event Logging) export from ASA , something similar to this is supported in this IOS version (12.2(58)SE) which is called Cisco Smart Logging and Telemetry (SLT).
Source :
http://www.optricsinsider.com/manageengine/cisco-3k-switches-now-supports-netflow-export/

Sitemap For Blogger (blogspot.com)

2011-08-16T22:38:00.002+07:00

Ideally, a sitemap file must contain all the URLs from a site, but if our blog hosted on blogspot.com (or if We use a custom domain), We Will be surprised to know that the default sitemap file only contains 26 new pages are indexed from the blog. Then how do I fix this? Actually this problem has been explained very complete blog Amit Agarwal is a popular blogger from India, so please learn it directly addressed this in a blog labnol.org (do not forget translate)

Create a colleague who already Understand how to submit blogger sitemap in google webmaster tools can directly use the Blogger sitemap generator here, Actually not just for bloggers only, peer can also send a ping artists directly to Yahoo and Bing.

Or just look at the video below for more easy:)

Dial-Up Networking Point to Point Protocol

2011-08-16T15:35:00.000+07:00

Dial-up networking also split your data into chunks, encode it, and packing the data before sending.

Dial-up networking using a method called PPP (Point to Point Protocol) to package the data to be sent through phone lines. Just as Ethernet, PPP data packets, often called a frame, consisting of several parts. There are beginning and end (called "wrappers") that bind the package. Just like the ethernet packet, the PPP frame contains the wrapper in the wrapper. Packaging help direct the data in the packet to its destination using different protocols, like TCP / IP, and also determine the type of data compression used on the package.

One important distinction between PPP frames and ethernet packet is the capacity to repair damaged PPP packets using a process called frame check sequence. A package is usually lost or damaged en route, when he arrived at his destination, a damaged ethernet packets discarded and the request goes back to the computer that sent the packet to send it back - a very time-consuming process if you use a dial-up, which is much slower than broadband.

In contrast, one part of a PPP wrapper contains a chunk of data called the validation value or value validation, which is verified at the destination. In some cases, PPP frames are damaged can be restored through the validation, so it does not need to be resent.

If this process saves time that would otherwise be used to send back any damaged package, error-recovery features lead PPP PPP tends to work slower than a simpler protocol, which has no such error correction. But the internet is a dangerous place for a data packet; errors or other problems can cause dozens of packets per second. For a long time, PPP is more suitable for the Internet protocol is more flexible than others, so it has survived and flourished.

Dial-Up Networking

2011-08-16T15:30:00.000+07:00

Dial-up networking is the simplest way to connect to the internet: you only need to connect to your telephone line using a modem, if you are already subscribed to an ISP. Mostly, the software tools you need already exist on Windows, some ISPs, like Earthlink, "polish" user interface for easy setup. Whichever method is used, the dial-up customers usually only need to enter a user name and password, in addition to ISP's phone number, to the dialog box that appears. Dial-up networking software uses the information to establish a connection with ISP and doing other work. After setup, the customers need to do is build a connection with double-clicking an icon.

When you do the "handshake", the dial-up networking modem first directs you to the ISP's phone number, which is answered by another modem at the other end. For a few seconds the modems send signals to the control to determine how fast each one can connect. Screeching sound that you normally hear when you first connect the modem is the sound of your modem and the ISP modem "harmonizing" the connection and determines the speed to use.

If the connection is established, your modem will silence the internal speaker, and dial-up networking sends your user name and password to the ISP using a process called CHAP (challenge handshake authentication protocol). At the ISP, a computer checks your user name and password against a database of consumers. If the ISP authenticates your information, the status of dial-up networking window disappears, and you are free to surf, check and send e-mails, downloading files, and so on. The process can take anywhere from 30 seconds to 2 minutes.

How it works Dial Up Networking

2011-08-16T15:27:00.000+07:00

Dial-Up Networking: a set of protocols and software used to connect a computer to an Internet service provider (ISP), online service or a remote computer through an analog modem and POTS (plain old telephone system).

Dial-up networking is a type of computer connection to the Internet's most widely used. In late 2000, more than a quarter of a billion subscribers to dial into the Internet - four times more than other popular access methods, such as broadband DSL, cable modems, and ISDN. Here are some things you need to know:

Dial-up networking using a modem as an interface between a PC with a network like the Internet; modems typically have speeds up to 56 kbps.

To dial the modem is still the cheapest way of accessing the internet and most widely available. But because it has a relatively slow speeds, these sites are rich in graphics take a long time to load.

The maximum speed in downloading data using a dial-up networking is limited to the bandwidth analog telephone systems, line quality, and Internet traffic.

Dial-up networking usually communicate with the ISP using the Point to Point Protocol.

While broadband services like DSL, cable modems, and satellite, already widely available throughout the world, dial-up networking continues to grow. It is estimated that wireless connectivity will face the biggest challenge of dial-up networking in terms of customers in the future. In fact, analysts predict that, in late 2001, people who use dial-up networking two times more than using broadband service to connect to the internet. In 2003 the gap will close, but dial-up networking will still be the most popular, with a ratio of 1:1.5.

Telnet: to Remote or control the computer

2011-08-16T15:02:00.000+07:00

Ping: To Remote / test connectivity

On implementation, the Windows Networking using IP numbers instead of names as the main reference of a computer and other resources. This is in contrast with TCP / IP, where an IP number from a computer is Important and the hostname is almost always a choice alternative.

- Windows Networking uses a unique name for each PC and user.

- Windows Networking using the group name for the service network or other resource

Because the name is fundamental to the operating system, then how do They diresolve Becomes important. There are two main Airways how to resolve a name on a computer address (IP number):

- Using a broadcast packet

- Using WINS

PRACTICE

Tools and Materials

- Three + LAN PC Card with MS Operating Systems. Windows 9x

- Software Ethereal and the libpcap

- One fruit Hub / Switch

- UTP Cable

- RJ-45 connector

- Crimping Tang

Windows Network

2011-08-16T14:58:00.000+07:00

Windows networking is developed separately with TCP / IP, running on a different network systems, and only recently been developed to be run in conjunction with TCP / IP. Consequently, the architecture and how he Implemented is very different from the real internet protocol.

Microsoft Windows Networking is a set of specific protocols used by Windows-based computer to do the sharing of resources within a LAN or WAN. You easily install Windows on your PC and IMMEDIATELY after you connect to a LAN, sharing mechanism will from work automatically. You do not need to create a File Server. All PCs on the LAN to share resources as a peer-to-peer network.

Microsoft Windows Networking is a world completely separate from other network protocols. Because the regulation of developed on its own path, without the need to comment, Critique of the development of internet services and RFC, apart from the real internet protocol That evolved along with the Internet with a consistent model, these systems have significant differences with TCP / IP .

Microsoft Windows Networking is Often Called the NetBIOS (Network Baste Input Output System) networking. NetBIOS is a layer on the Windows Networking stack the which is the boundary the between any alikasi Windows Networking and network systems used at the bottom of the TCP / IP, Novel, and so on

NetBEUI is the latest version of NetBIOS, the computer programs That manage communications on the LAN. NetBEUI restructure the frame format (information in the transmission of data) That Were not Previously regulated by the NetBIOS. NetBEUI was developed by IBM for the product from the LAN settings (manager) and has been adopted by Microsoft for its Windows NT products, LAN Manager and Windows for Work Group. Hewlett-Packard and DEC have also done the same for Their products.

NetBEUI has the best performance for communications the between computers in a LAN. Because, like NetBIOS, it does not support the routing of messages to other networks, the inter-face configuration must be adapted from Such protocols as IPX or TCP / IP. We must install Both NetBEUI and TCP / IP on each computer and set the server to use NetBEUI for communication within the LAN and TCP / IP for communication beyond the LAN

Wireless Network Set Guidelines on Microsoft Windows 7

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If you find that Windows 7 is connected to other Wireless Network is not your own, you might have a problem with the order of preferred wireless network on your computer. To fix this issue with you just need to tell Windows 7 is the first network is connected. In this guide I will show you how to do with managing the wireless network in the Control Panel.

1. Click on the wireless network in the Task bar

If the icon is not present, to the Control Panel and then click Network and Internet Network and Sharing Center

1. When you go into Network and Sharing Center click Manage wireless networks link on the left panel.

This will open wireless network that allows you to manage wireless networks listed.

1. To set the wireless network as an option, click to select the wireless network you want to assign as an option

2. Click the button to move upward until the selected wireless network at the top of the list. This tells Windows to connect to this network before connecting to others on the list.

A. If you find a wireless network on the list that you no longer wish to connect select it and click delete button to delete from the list.

Useful Information in Ubiquitous

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Information provided by netflow protocol is quite complete for a process analysis. From here you can find the destination IP address, where data traffic is coming from, what port number the application used and its target, and many more. Apparently, so complete information can not only be used by the monitoring process, but there are some devices that use Such information for consideration of bandwidth, as intrusion detection devices, firewalls, and more. Therefore, the device monitors you start now by using netflow. Good luck!

Applications Support Netflow

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Netflow support applications can Actually be Divided into four essential components of these. In the experiment, We use the Linux operating system to create a system netflow. Chosen to use Linux Because Will you get all of these support programs without having to pay a dime and without having to commit a crime of piracy. Easy and convenient, is not it?

After Linux is available, We use flow-tools programs as Netflow collector. This program has the ability to capture netflow information sent from the network devices and then forward again to another device.

Netflow analyzer for the program, We use the program very easy to Flowscan configure and run. Netflow reporter for his program, We use JKFlow That program has a complete facility in conducting any data filtering

want to display. Once everything is ready, the program presenter was our Netflow uses RRDtool program, the which can deliver realtime graphs Presented you with a round robin database system.

All installed by following the instructions provided and configured According to our wishes. The result is a fairly informative graphs displayed by the components of JKFlow.

How to Make Systems Netflow?

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Creating a System That can capture, display, and analyze netflow information Actually Relatively Difficult. All you need is a computer device That pretty good specs and can be connected to the network. In making netflow system, there are three essential components to make it an Appropriate information to be read and analyzed by Humans. The third component is a Netflow collector, analyzer Netflow, Netflow reporter, presenter and Netflow.

Netflow collector or a literal is a netflow collector is a system the which relied on to take and collect netflow information sent from the network devices. Information That Is still a raw data collected and converted into a file That Will be read by Netflow analyzer. Netflow analyzer Will read the raw data is then analyzed into a form That can be read by Humans. Once transformed, the data was sent to the Netflow netflow reporter. Inside this reporter Earlier Netflow netflow data in the aggregated information, aggregated into information That you really want. You can specify what information you want to show here. Netflow reporter Will then send the covenants you have made to the component Netflow presenter. Network presenter is what Will the make the netflow data into graphs, tables, and text That you can read Comfortably. All information presentation here so you can properly perform Further analysis.

All four components must work together well to be Able to display the information properly. Without good cooperation in the between all four of these components or even one of Them just is not there, then you Will not get the netflow information.

Is the facility Netflow Performance Network Devices Can Interfere?

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If viewed as a complete and dense information provided by netflow, then you may go to the left of this is hard work for network devices. But the job was not to overload the network devices, specifically Cisco. This facility Became the main processor does not overload the device Because of this facility Will be run with the help of the ASIC of network devices. ASIC processor in the which is a special processor to do the "thinking" on the front level, Will process all this information. Because the ASIC is much more specific abilities of ordinary processor, then run the facility netflow Becomes not a burden.

According to one study, a network device That provided the information flow of 10 000 Will increase of the CPU usage to be approximately below 4%. To flow, amounting to 45,000, then the additional CPU in it amounted to below 12%. As for the flow of 65 000 CPU process enhancements are approximately below 16% only. Thus, facilities enable netflow on network devices did not significantly affect overall performance.

There Netflow Protocol Version How?

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As explained above, That Is any information in the netflow data from the specified protocol version. Netflow version of the protocol determines what components you can use as an ingredient analysis of the monitored network . Netflow netflow protocol protocol version 1 is the first time out. Less complete information provided to the make a version of this protocol is not recommended for use again.

The next version of netflow protocol is version 5. In this version, the information sent out from the network devices is much more than previous versions. That information comes out of netflow version 5 protocol is as follows:

Source IP address: Host address packet is sent.

Destination IP address: Destination address where the package Will be sent.

Source TCP / UDP application port: Port-port applications used by the sender of data sources.

Destination TCP / UDP application port: Port-port the application That Will be addressed by the data.

Next hop router's IP address: Address of the next router That Will be addressed by the data packet.

Physical Input interface index: index number of the interface where the data is Entered.

Physical Output interface index: index number of the interface where the data will of come out.

Packet count: calculation of flow based on the size of data packets.

Byte count: Calculations based on the amount of bytes of data flow.

Start of flow timestamp: Timestamp to mark the beginning of the data flow Occurs.

End of flow timestamp: Timestamp to mark the end of the flow.

IP Protocol: IP protocol is what Marker passing in the flow.

Type of Service byte: Information about the field Type of Service.

TCP Flags: Information about existing TCP flags in a packet.

Source AS number: Information That shows where the AS number of the data packet originated.

Destination AS number: Information about the AS number from where the package originated.

Source subnet mask: subnet mask information from the IP address of a packet of data That Will come out.

Destination subnet mask: subnet mask information of the destination IP address by a packet.

Netflow version 5 is the most commonly used, although there are many more versions of the other like the version 7 is only used by the Cisco switch, version 8 is added to its aggregation capabilities, and version 9 the which is claimed by the Cisco can Provide almost any tissue Surrounding Important information from layer 2 to layer 7 and the OSI protocol.

What Information Can be Provided by the Netflow protocol?

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Netflow protocol can not only Provide information of how much bandwidth That has occurred in an interface, but much more than That. Netflow protocol has the ability to capture all activity in and out through an interface, then sort out the field aggregated data field is based on the information contained in it, and representing Them in a neat table format.

What information is Carried by the protocol varies Depending on the version of netflow netflow protocol Itself. However, the information the most common and most needed is information about the Source and Destination of a packet of data, what type of communication port That Is used in the process of transfer, delivery and acceptance times, TCP flags in it, and more. All the data is very useful for network administrators to perform analysis.

Why You Need To Know "Stomach Contents" in Data Communication Networks?

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Netflow monitoring system which uses are very useful for network administration. They do not hesitate to take pains to create a monitoring system using data from netflow. Why is that? Because network monitoring systems is very important to have. A good monitoring system is a system that can find data traffic in the network as detailed as possible until the end at the boundaries of the privacy of the data owner. As long as not violating the privacy and confidentiality of data, then the network administrator is free to do the monitoring.

By using the monitoring system using netflow, then you can know the traffic data in more detail. This detailed information will be very useful as a material analysis of the nature and behavior of your network. By doing this analysis, every event, incident, and the daily activities associated with the network can be monitored well without a miss. Good for monitoring usage of the network, attacks from outside, viruses, programs forbidden, everything can be monitored well by this facility. Eventually this information can be a material consideration in taking important decisions.

How Netflow Generated by Network Devices?

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Netflow can be installed in almost all Cisco network devices output that comes with a special processor called ASIC. So the device is not equipped with a special processor is not necessarily able to generate the data flow for analysis.

On a device that allows it, you just attach command in interface-intercae you want to thoroughly traffic. Commands such as sensors, when there is data passing through it no matter how small, then the sensor will know it, analyze it, and turn it into a statistical information about the characteristics of the data. Information that is not the content of your real data, but only the characteristics of the packets that carry data.

Interface is fitted with sensors netflow command will only capture information that incoming packets (inbound) to the interface. The point is that the data packets coming from outside and want to get into the interface is exactly what will be recorded. So thus, the information that you can only enter what data packets to the source destination, while the exit is never recorded.

With these conditions, you want to get complete information (inbound and outbound information) first need to know your data packets flowing in and out through the interface which. Once known, put sensors on those interfaces. If mounted on the right interface, then you will get complete information.