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'