New on the Blog

High Availability DHCPv6

Much has been said regarding the sometimes-subtle, sometimes-obvious ways that “shiny new” IPv6 is different from the “legacy” IPv4 protocol.  One subtle example is how IPv6 uses ICMPv6 for the Neighbor Discovery Protocol (NDP) compared to IPv4’s broadcast messages and ARP method.  One overt example is how IPv6 uses behemoth 128-bit addresses where IPv4 uses petite 32-bit addresses.  Another subtle example is how IPv4 uses inefficient broadcast messages on a LAN and IPv6 makes far greater use of efficient multicast.  Another noticeable difference is how IPv4 addresses ma

Easy Way to Figure Out the Age of Cisco Devices

As a network expert, an unglamorous part of our job is tied to tedious, but important tasks.  A perfect example is tracking how old devices are so we can monitor upgrade needs, end of life, and/or end of support issues.

If we had plenty of time and kept meticulous notes and documentation on each and every device, it might not be too painful.  But who among us really has that much time? 

A key component to the Infoblox Network Automation is the ability to continuously handle tasks such as this use case quickly and easily.

Be Careful What You Wish For

As part of my standard presentation about DNS security, I describe the threat of cache poisoning:  If a bad guy is able to inject bogus resource records into your name server’s cache, he can redirect you to a visually identical replica of the web site you think you’re going to.  You enter your credentials, your account information, your credit card information, into the bogus site, and the bad guy uses your personal information to drain your account o

Staring at IPv6's Prosthetic Head(ers) - part 2

In my last post, Staring at IPv6’s Prosthetic Head(ers), I introduced the IPv6 extension header. There’s a recent IETF draft that I’d like to explore in a blog entry (IPv6 Extension Headers in the Real World) but I wanted to make sure to first review the IPv6 extension header concept for myself and for readers. We’ll get to that draft next time around in part 3 but for now let’s finish our review of IPv6 extension headers by looking at the specific types that have been defined.

DNS based DDoS Attacks- What’s in a Name?

Recent press has shown a marked increase in DDoS attacks on ISPs around the world. According to Network World, DDoS attackers seem to have switched their attention from banks to gaming hosts, ISPs and even enterprises. At Infoblox our customers have been telling us the same thing, as DDoS attacks have intensified among our ISP customers. Initially everything was lumped together under the ‘DDoS’ heading.

Recent blog activity

A Free Online Demo of Infoblox Network Control for VMware vCloud

Posted by Krupa Srivatsan

Posted: September 25, 2014 - 11:33:52 AM

VMware, the industry-leading virtualization software company, runs a free online portal called VMware Hands-on Labs (HOL) where anyone can check out the latest products from VMware and selected partners in a tested and documented cloud-based virtual environment.


Still Using DHCP On Your Routers? You Can’t Do That With IPv6!

Posted by Scott Hogg

Posted: September 15, 2014 - 04:23:29 PM

There are many enterprise companies who are still using DHCP for IPv4 on their routers/switches.  This is typically done by the network administrator who needs to get a DHCP capability up and running quickly but does not have access to a DHCP server.

VMworld 2014

Posted by Jasmeet Pabla

Posted: September 02, 2014 - 01:05:25 PM

Takeaways from VMworld Solutions Exchange Floor


If you manage an IT organization, you might be concerned about the recent Internet routing table “crisis,” where the volume of Internet routes is reportedly exceeding the 512k capacity of many Internet routers.

How automation will help with IPv6 adoption

Posted by Ed Horley

Posted: August 17, 2014 - 04:25:04 PM