IPtables

# src(me) -> dest

iptables -A OUTPUT -p tcp --match multiport --dports 80,443 -d 10.11.12.55 -j ACCEPT -m comment --comment 'X-tee turvaserver'

# dst -> src(me)

iptables -A INPUT -p tcp --match multiport --dports 80,443 -s 10.11.12.55 -j ACCEPT -m comment --comment 'X-tee turvaserver'

# list by line numbers

iptables -L --line-numbers

# reegli nr 24 kustutamine

iptables -D INPUT 24

# reegli lisamine reale 53

iptables -I OUTPUT 53 -p tcp --match multiport --dports 80,443 -d 10.11.12.55 -j ACCEPT -m comment --comment 'X-tee turvaserver'