Linux System Administration

Linux Command Line, Generating a Random File

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It is very easy to create a random file using the linux command…

Tweaking TCP for Fast (100mbps+) Connections and Transfers on Linux

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We recently did some speed testing on a few of the servers on our network, and we were not receiving the speeds expected considering they were sitting on a physical 100mbps ethernet port. The servers were indeed on physical 100mbps connection, however wget (TCP/IP, HTTP Port 80) download tests showed only a max of about 1.5MB/sec (note the 8bit/byte conversion, so this translates to about 12mbits).

A Poor Man's VPN: Proxy Web Connection to Remote Server (via SSH and Tunnel)

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Did you ever have a situation where you needed to access a website…

How to Install SNMP on Tomato Router Firmware and Graph Traffic with Cacti

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You've flashed your old WRT54G or other vanilla router with the…

Command Line Packet Sniff Existing Running Process in Linux

Have you ever come across a server that is doing a lot of traffic?…

Ubuntu Server in Place Network Upgrade From 8.10 to 9.04

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It is easy to do an in-place upgrade of Ubuntu Server from…

Installing And Compiling Zabbix Client / Agent

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Zabbix is an excellent system monitoring package. It does…