LinuxHostingSupport

Howto open ports using iptables, see the following examples:

Open port 25 (SMTP) for the SOURCE_IP address:

iptables -A INPUT -p tcp -s SOURCE_IP  –dport 25  -j ACCEPT

Open port 22 (SSH) for the SOURCE_IP address to a specific DESTINATION_IP address

iptables -A INPUT -p tcp -s SOURCE_IP –dport 22 -d DESTINATION_IP -j ACCEPT

More to come…