Showing posts with label Iptables. Show all posts
Showing posts with label Iptables. Show all posts

Wednesday, August 19, 2015

Linux Iptables allow or block ICMP ping request

=> Zero (0) is for echo-reply

=> Eight (8) is for echo-request.

To enable ICMP ping incoming client request use following iptables rule (you need to add following rules to script).

My default firewall policy is blocking everything.
Task: Enable or allow ICMP ping incoming client request

Linux Iptables Avoid IP Spoofing And Bad Addresses Attacks

Spoofing and bad address attack tries to fool the server and try to claim that packets had come from local address/network.

How to: Linux Iptables block common attacks