CodePudding user response:

How does this do for detailed steps

CodePudding user response:

Firewall write write in protocol name

CodePudding user response:

Iptalbes -l INPUT - s client IP -p TCP -- dport 80 - j ACCEPT
Iptables -l INPUT - s library door machine IP -p TCP -- dport 21 - j ACCEPT

Don't put the rules of the default Ping is forbidden