allowing only 1 IP through
iptables -I INPUT \! --src 1.2.3.4 -m tcp -p tcp --dport 777 -j DROP # if it's not 1.2.3.4, drop it insert into chain INPUT drop any tcp packet to port 777 thats not from the ip 1.2.3.4
Source: ServerFault
iptables -I INPUT \! --src 1.2.3.4 -m tcp -p tcp --dport 777 -j DROP # if it's not 1.2.3.4, drop it insert into chain INPUT drop any tcp packet to port 777 thats not from the ip 1.2.3.4
Source: ServerFault