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nmap-dev logo Nmap Development mailing list archives

Re: Subnet masks in Dotted-Decimal format
From: Arturo 'Buanzo' Busleiman <buanzo () buanzo com ar>
Date: Thu, 19 Oct 2006 16:24:42 -0300

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William McVey wrote:
Actually, RFC 2979 (sect 3.1.1) clearly states that it's acceptable for
firewalls to block ICMP Echo and Echo Reply messages.

Yes, but I'd say that the problem comes when someone filters ALL of in/out ICMP :P

Lots of people still mistake icmp echo request/reply with "icmp", not knowing all of the other types.

- --
Arturo "Buanzo" Busleiman - Consultor Independiente en Seguridad Informatica
http://www.buanzo.com.ar | http://www.vivamoslavida.com.ar : Portal no-comercial del buen vivir!
for f in www blog foros linux-consulting vpnmail; do firefox http://$f.buanzo.com.ar ; done
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Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFFN9D1AlpOsGhXcE0RAln5AJwMA0BcJv0UYZyjyKeR1izgMMIhBQCeKkl7
ohGCvhPHTyMTTZNdIik0yyY=
=62W5
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