Security Basics mailing list archives

Re: ICMP (Ping)


From: <freeasabird_13 () gmx net>
Date: Tue, 2 Sep 2003 22:11:30 -0400

Are there any security issues for allowing a firewall/router to respond to
Ping from the internet?

-Paul Kurczaba

Yes.  It would not be preferable for you to allow your firewall/router to
respond to pings from the internet.  Someone running a wide-scale scan of
internet computers for possible attack targets would quickly be made aware
of your obvious internet presence and you could become a target for attack.
This wouldn't be such a big problem provided your firewall/router was
well-configured with security in mind.  If there is no overwhelming reason
for allowing your device to respond to pings then it shouldn't be configured
to do so.  It is simply calling too much attention to your systems and their
possible vulnerabilities.  Well anyway, that's my quick 2 cents on the
matter.  I'm sure others will share theirs too.

Best Wishes,

~Nathaniel Hasenfus


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