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Firewall Wizards: Re: Borderware Ping Server

Re: Borderware Ping Server

From: Marcus J. Ranum <mjr_at_nfr.com>
Date: Tue, 09 Oct 2001 11:23:32 -0400

> Seems to be quite unique, is it a proxy server for
>ICMP echo request?

I believe that what it did was set a bpf filter for icmp packets, which it
then proxied to the outside world and re-injected on the internal network.
Kind of an interesting concept; I wonder if it would have adequately protected
against a ping of death attack...

mjr.

---
Marcus J. Ranum          Chief Technology Officer, NFR Security, Inc.
Work:                           http://www.nfr.com
Personal:                      http://www.ranum.com
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