Allowing incoming pings on linux
Simple settings on port which allows incoming requests
> iptables -A INPUT -p icmp –icmp-type 8 -j ACCEPT
> iptables -A INPUT -p icmp –icmp-type 30 -j ACCEPT
ICMP type 8 is “echo-request”, which you may substitute for ‘8’ if you wish.
ICMP type 30 is “traceroute”, which, again, you may substitute for ’30’ if you wish.