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Old 06-27-2013, 02:03 AM   #1
Registered: Jun 2013
Location: India.
Posts: 35

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Getting "Packet filtered" when try to ping a host.

Hello Everyone.

I am facing some kind of issues when I am trying to ping a specific host from my Red Hat machine.If I ping a some different subnet, it works just fine. Let say I have 3 hosts-A,B,C.
Ex:-From host A to B:-
PING ( 56(84) bytes of data.
From icmp_seq=1 Packet filtered
From icmp_seq=2 Packet filtered
From icmp_seq=3 Packet filtered

From the same client A to C, ping works just fine:-
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=62 time=4.70 ms
64 bytes from icmp_seq=2 ttl=62 time=4.82 ms
64 bytes from icmp_seq=3 ttl=62 time=4.77 ms

I researched and found that it could be because of iptables. For testing I disabled the Iptables on my machine using:-
# /etc/init.d/iptables save
# /etc/init.d/iptables stop

But still no success. Host A is conneceted to a switch and then to a Router. Checked the setting on the router and there is no filter rules or firewall enables.

Need some help on it. Your expert inputs would be highly appreciated.

Thanks in advance,
Srijiv Dimri
Old 06-27-2013, 08:32 PM   #2
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It's likely an ICMP setting.
1 members found this post helpful.
Old 06-28-2013, 07:41 AM   #3
Registered: Dec 2008
Location: east anglia
Distribution: SuSE, antiX
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Some sites don't allow you to ping them - it is, as I understand it, a defence against DoS attacks. There is a site which is set up specifically to be pinged (it's part of the icann/iana consortium so should be safe) run:

If that works, your computer's fine but the server your pinging is shirty about it.

There's a memo explaining the purpose & function of the testing sites at


Last edited by TheBigMing; 06-28-2013 at 07:52 AM.
Old 06-28-2013, 07:44 AM   #4
Registered: Jun 2013
Location: India.
Posts: 35

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Originally Posted by frankbell View Post
It's likely an ICMP setting.
It was an issue with the upstream router. The ACL was filtering packets. I made changes with the ACL and all worked just fine. Thanks a ton for all your help and expert comments.


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