Cisco ASA license gone!? Today I experienced a failure during an upgrade of an ASA5505 which resulted in my Cisco ASA license disappearing. The ASA complained about error writing to flash. %Error opening disk0:/.private/startup-config (Read-only file system) Error executing command…
TFTP Server is often used by Cisco devices to manage their file transfers. Here is a quick guide on how to setup a TFTP server on Centos/Redhat. First obtain the RPM. In Centos, use yum to search and install tftp-server….
A regular Windows Server 2003 comes with two remote access sessions. This means you can open a maximum of two simultaneous Remote Desktop Sessions at one time, unless you install more terminal services licenses. However one thing you may not…
Here’s an updated post on how to kill a hung vmware guest using ESXi CLI on 4.x and 5.x Alright, I ran into a hung VM. There’s a guest in my cluster that wouldn’t stop or restart. Hitting the stop…
Problem: Have you ever wondered how you logoff or disconnect a remote access VPN user on a Cisco ASA? Well there are two ways to do it. One is to use the GUI – Cisco’s ASDM and the other by…
Ever noticed when you issue a show running-config on a ASA to look up the VPN tunnel pre shared key and it appears as a “*”? Well here’s how to find out what the key is! more system:running-config This will…
Can’t beat free can yeah? I never knew there were that many free Cisco tools out there! I stumbled upon Brad’s site and he’s got a hefty list! I’m bookmarking this on my site. http://www.bradreese.com/cisco-tools.htm This is my personal favourite…
It’s been a while since I’ve blogged. This is the first post since I’ve moved my old blog http://springdom.blogspot.com to my new home. So I’ve decided to document what I went through. These few months I’ve been toying around owning…
Problem: Troubleshooting vpn slowness and packet retransmits could be a puzzling task, especially when it’s over an IPsec tunnel. Last week I had the opportunity to troubleshoot a problem with slow website loading times on a webserver across the link….
Today I ran into a weird scenario where a Linux system’s NIC would set itself to 100Mb half duplex regardless whether the device and NIC was manually configured to operate at full duplex. After strolling through Cisco’s website Troubleshooting Cisco…