Booches.nl

Citrix WebInterface 5.3 on IIS7

René Jorissen — Tue, 07 Sep 2010 14:29:29 +0000

While configuring a Citrix NetScaler 9.2 in conjunction with WebInterface 5.3 I received the following error message when executing a published application. An error occurred while trying to access the requested resource. I thought to myself….no problemo, since I blogged about this problem before (source). This solution didn’t help. After changing the RequireLaunchReference value I [...]

Tunneling sessions via Plink

René Jorissen — Wed, 25 Aug 2010 20:02:46 +0000

Plink stands for PuTTY Link and is a command-line connection tool similar to Unix ssh. As a networking consultant I often need to support customers from remote locations. Access to their networking equipment is mostly blocked from unknown locations. Sometimes it is allowed to directly access networking equipment, like a company firewall, from a known [...]

Cacti – Superlinks not working

René Jorissen — Wed, 18 Aug 2010 14:30:42 +0000

After upgrading Cacti, like shown in the previous post, the Superlinks plugin stopped working correctly. When opening a Superlink tab I got a blank page in Google Chrome or a half page in Internet Explorer and Opera, like shown below. After some Googling I found the solution for this problem on a Cacti forum. The [...]

Upgrade Cacti 0.8.x

René Jorissen — Wed, 18 Aug 2010 12:13:03 +0000

A lot of people use the CactiEZ virtual appliance to install a running Cacti environment. The latest CactiEZ virtual appliance (CactiEZ v0.6) uses Cacti v0.8.7c with Plugin Architecture 2.2. Of course a lot of people are developing Cacti and the latest stable version is Cacti v0.8.7g with Plugin Architecture 2.8. I always have trouble with [...]

STP successor – CiscoNL

René Jorissen — Mon, 16 Aug 2010 10:30:44 +0000

I just watched a online movie on the CiscoNL – Technology site about the successor for Spanning Tree Protocol in the near future. The movie can be found here (language: Dutch).

Cisco Virtual Com

René Jorissen — Wed, 28 Jul 2010 09:45:56 +0000

It took some time, but Cisco started to migrate from the blue RJ-45 based console cable to an USB based console cable. The latest types of routers and switches are equipped with both types of connections or only with the USB based connection, like the new IBM blade switches. The picture below shows the console [...]

Catalyst 3750X licensing

René Jorissen — Mon, 26 Jul 2010 20:36:24 +0000

While making a kit list for a network design with Cisco Catalyst 3750X switches, I got confused while looking at the different licensing features. The Cisco Catalyst 3750X switches are available with multiple licensing options, which can be upgraded. A new switch can be ordered with two licensing options. These are LAN Base (Enhanced Intelligent [...]

Outlook 2010 and Google Calendar Sync

René Jorissen — Wed, 30 Jun 2010 17:45:17 +0000

I replaced my Outlook 2007 with Outlook 2010. Since I am using Google Calendar, I would like to sync my calendar with Outlook. With Outlook 2007 you can use the Google Calendar Sync application. After installing Outlook 2010 the synchronization of the calendar didn’t function anymore. While synchronizing you will receive the following error message. [...]

Restore RSA 7.1 primary database and RADIUS config

René Jorissen — Wed, 30 Jun 2010 07:12:17 +0000

A few days ago I was troubleshooting a problem with an ISA array after upgrading the VMware environment as you can read in this article. I had a same kind of problem with a RSA environment. After upgrading the VMware Tools and the Virtual Hardware, the RSA database didn’t start anymore. RSA noticed to much [...]

Windows LDAPS expired

René Jorissen — Thu, 17 Jun 2010 18:00:38 +0000

A lot of appliances and/or security solutions use LDAP to synchronize users from an Active Directory or an eDirectory environment. Active Directory is LDAP enabled by default. If you would like to harden your network, you would like to use LDAPS. LDAPS is a term to refer to LDAP communication over SSL. Intercepted LDAPS traffic [...]

VMware: upgrade VMware Tools and Virtual Hardware for Microsoft ISA array

René Jorissen — Tue, 15 Jun 2010 07:35:57 +0000

Today I have been troubleshooting problems with a Microsoft ISA array. The array didn’t function anymore after moving the Configuration Storage Server and one array member from a VMware 3.5 environment to a VMware 4.0 environment. After moving the array member the VMware Tools were upgraded and also the Virtual Hardware was upgraded. After rebooting [...]

Microsoft ISA publishing – it’s all in the “path”

René Jorissen — Wed, 09 Jun 2010 11:11:01 +0000

I have installed multiple reverse proxy servers based on Microsoft ISA 2006. These reverse proxy servers are mainly deployed to publish services like Outlook WebAccess, PDA synchronization, SharePoint or regular websites. Services like Outlook WebAccess are published using secure session protected by SSL certificates. Microsoft ISA server uses “Listeners” to match and intercept traffic from [...]

ISDN Backup – still alive?

René Jorissen — Wed, 26 May 2010 19:39:24 +0000

Nowadays everybody wants redundancy within their network, especially when using remote sites. Customers are using multiple ISP’s for redundancy and/or configure BGP solutions. In the old days (hear me talking with my 27 years) ISDN was often used for backup purposes and I still use it sometimes as redundancy mechanism. Everybody knows that bandwidth is [...]

RSA AM 7.1SP3 Token Delivery

René Jorissen — Wed, 28 Apr 2010 12:00:26 +0000

Using two-factor authentication is common when publishing remote services to the internet with components like Citrix NetScaler or Juniper SA appliances. RSA is a well-known provider of two-factor authentication mechanism. Beginning with RSA Authentication Manager 7.1 people have the ability to use the On-Demand feature. This feature enables the delivery of token codes via SMS [...]

Citrix NetScaler: Protocol Driver Error

René Jorissen — Tue, 20 Apr 2010 11:29:16 +0000

Today I have been troubleshooting a Citrix NetScaler configuration, where some clients received the Protocol Driver Error message when executing a published application. This error message is mostly related to a wrong configuration of the Security Ticket Authorities (STA’s). I spent a lot of time troubleshooting this issue and focused on the STA configuration. I [...]