CentOS Post Install Configuration Guide

The purpose of this document is to guide you how to post confiuration for CentOS, depending on the needs of the server-specific configuration.

General Post Configuration

Basic

  1. Change the default root password to secure the system
  2. Checking the status of SeLinux
  3. Setup the hostname
  4. Howto configure sudo on CentOS
  5. Harden SSH access
  6. Installing and Configuring Logwatch

Mail

Networking

  1. Check /etc/sysconfig/network-scripts/
  2. Check /etc/sysconfig/network
  3. Check /etc/resolv.conf, use google’s dns servers 8.8.8.8 and 8.8.4.4
  4. Check /etc/hosts

Security

Optional configtuation

For Web Server

For data Server

For File Server

For Subversion

YUM

Clear yum packages

yum clean all