For Cisco Routers

If you want to know the chassis serial number for your router use the following command
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This tutorial will explain howto remove NSM (Netscreen security manager) configuration from a juniper firewall

There are two options on how to remove the device from NSM. Either simply disable the NSM Agent on the device while leaving the configuration on the device, or remove the NSM configuration completely.
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OpenSSH is a great means to protect your connection from being sniffed by others. However, this isn’t always enough. Simply proving that you connected to a server is enough to get incriminated. Unfortunately, SSH doesn’t provide a native way to obfuscate to whom it connects. Instead, a proxy server can be set up. And this is where TOR comes to play. This howto covers installing TOR on a Debian based system and setting up SSH to use TOR.
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A wireless router is great when toting a computer with a wireless interface around, but moving a wired computer to another room or floor often means stringing an unsightly Ethernet cable through the house. The alternative is buying a wireless adapter, hoping that a Linux driver is available for it (there often isn’t). Even a wireless interface is no good when used out of range of the wireless router.
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This tutorial will explain how to working with Netgear WG111T working with Debian Etch and Lenny

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The following example will demonstrate how to configure a single SPAN session on a Cisco Catalyst switch. The specifics are different between different switch models, so be sure to check the Cisco documentation.

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