(Ubuntu server) Im running
sudo iptables -A INPUT -s 127.0.0.1 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m limit --limit 4/sec -j ACCEPT
and then
sudo iptables-save
To get the function of the iptables rules, is it enough to doing only above command (without restarting iptables)?