Ban a brute force attacking IP using iptables

This is a quick way to ban a brute force attacking IP using iptables. For a better long term solution, use iptables wrapper or a Firewall package such as Shorewall, gShield, etc..

On Host

REF: https://help.ubuntu.com/community/IptablesHowTo https://wiki.ubuntu.com/UbuntuFirewall

Forcing user to change their passwords upon login

This is to force a user to change their passwords upon (probably first time) login. As a root, change the password expiration date 0 to ensure user change the password in next login.

You can do the same for the existing user. Just issue chage -d 0 command on … Continue reading

Install mailman on postfix mta server

Install mailman on postfix mta server A quick note on installing mailman on postfix mta server Installation Install latest Mailman through yum

Directory created by mailman yum installation (above command)

Integrate with postfix We will not follow mailman generic instruction to integrate with postfix. Instead we will use … Continue reading

Installing ejabberd

A quick note on installing ejabbered Jabber/XMPP instant messaging server. Erlang

ejabberd yum

ejabberd Linux bin To install

This will install into /opt/ejabberd-1.1.3/ To start/stop:

To uninstall/clean

Related Articles http://ejabberd.jabber.ru/ http://www.process-one.net/docs/ejabberd/guide_en.html