How To Install VNC Server On CentOS

http://blog.shineservers.com/install-vnc-server-centos/

iptables remove specific rules

Execute the same commands but replace the "-A" with "-D". For example:

iptables -A INPUT -i eth0 -p tcp --dport 443 -j ACCEPT

OP: iptables remove specific rules

Setting up an SSL secured Webserver with CentOS

http://wiki.centos.org/HowTos/Https