For Cisco Routers
If you want to know the chassis serial number for your router use the following command
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Instead of inserting (or even burning) multiple CDs to install software in debian you can just use the downloaded ISOs.
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This tutorial will explain Howto compile kernel in Debian 5.0.The default kernel that comes with Debian is better suited for servers. It's optimized for high thoughput and low interactivity. When you compile your own, you can among other things optimize it for the processor(s) you have.
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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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iotop does for I/O usage what top does for CPU usage. It watches I/O usage information output by the Linux kernel (requires 2.6.20 or later) and displays a table of current I/O usage by processes on the system. Handy for answering the question "Why is my disk churning so much?".
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