[CentOS] ICMP outoging traffic at centos 6.7

Wed Jan 6 15:17:23 UTC 2016
Gordon Messmer <gordon.messmer at gmail.com>

On 01/06/2016 05:47 AM, Shital Sakhare wrote:
> Thanks, Dropped the ICMP type 3 port. Now question to find the cause.

Well, based on your tcpdump output, it looks like your rules were 
rejecting unrelated packets, or tcp/443 packets.  It's hard to be sure 
since the ICMP was the first packet, so you didn't show the packet it 
was actually replying to.

The ICMP traffic is a result of rejecting rather than dropping that 
traffic.  That is, I think you're looking at the problem wrong.  The 
ICMP traffic is simply the result of a choice you made.  Are you 
dropping type 3 in the output chain?