This guide is a compilation of resources (#1, #2) provided by Vagrant, and assumes you already have a fresh install of CentOS 6.4 x86_64 (1 Core/512MB RAM/12MB Video RAM/8GB Dynamic Drive/NAT Network/No audio or USB) with a root password of
vagrant
.
Step 1: Update openssh-server
and sudo
$ yum update openssh-server sudo
Step 2: Edit /etc/ssh/sshd_config
Change #UseDNS yes
to UseDNS no