Posts tagged with: iptables

Why not (or yes) run ssh daemon on default port 22

Many system administrators switch SSH daemon settings, so that it listens on another port than default 22. Why do they do it, does it make any sense? This post describes some ways to make your SSH server properly set up.

Linux network performance tuning

Linux networking has many tunables, which have pretty reasonable default values. However, if needed for high throughput, you can squeeze much more from your server by playing with iptables firewall rules, sysctl kernel settings and ethernet network interface buffers. This article explains some useful performance improvements, as well as the way to effectively work to improve performance by adjusting values and measuring effects.
 

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