From mboxrd@z Thu Jan 1 00:00:00 1970 From: Askar Ali Subject: Allowing ping Date: Tue, 25 Oct 2005 22:32:42 +0500 Message-ID: <435E6C3A.20709@beaconet.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-bounces@lists.netfilter.org Errors-To: netfilter-bounces@lists.netfilter.org Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@lists.netfilter.org hi list, I have a very simple question, presently we are blocking icmp "ping" on our servers. But as far I can userderstand its not very good practice or providing a good security by blocking ping request. see one can ping www.xyz.com and get the reply back. However Before allowing ping "echo-request" I just want to confirm whether doing ... iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT would be enough or doing some rate limiting would be better? Any help in this regard will greatly appreciated. regards Askar Ali