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Articles tagged with bash

Useful Technical Publications

This is a shameless plug really! I've set up an amazon store, with some useful books that pertain to these tutorials and some that have helped me in the past getting to grips with things My Amazon Store - Music & Books

Preventing Recursive Lookups for untrusted hosts BIND

This tutorial explains how to close an open DNS server and obscure which version you are running. Open /etc/named.conf Undernieth this: include "/etc/rndc.key"; controls {    inet 127.0.0.1 allow { localhost; } keys { "rndckey"; };...

Exim Global Email Aliases - Postmaster and Abuse

For RFC compliant mailservers (RFC822 6.3, RFC1123 5.2.7, and RFC2821 4.5.1)  you are required to accept mail for postmaster for every domain you host (also accepting abuse@ all domains is considered good practice) the simple way to do this with...

Basic SSH Security

Just a HOWTO to give you a basic insight into deterring SSH brute-force attempts. Nothing is better than a firewall, I am simply just explaining a couple of things you can do to make SSH a tiny bit more secure, I will explain in a later post about...

Email alert on root login

I, Myself as a paranoid sysadmin like to know when people log into any of the servers that I manage, even when my collegues are the people logging in, setting an e-mail alert on root login is in my opinion needed on any server you run, so you know...

Fix for logrotate when /tmp is mounted noexec

With /tmp mounted noexec on red hat based distros, logrotate at the end of every week doesn't actually write to the blank log files it creates, instead it writes new entries to the archived .1 files.Thanks again to Jonathan from way to the web. ...

Using Exim as a smarthost

This proved useful when I implemented MailScanner for Carbide-Finger Limited ...

Exim ACL Spam Filters

This is a mirror of http://vamos-wentworth.org/exim-tricks.html (With a few very minor ammendments) I have been unable to get to the site since september so I decided to mirror the above URL, It was very useful information for me when I fir...
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