🚀 go-pugleaf

In comp.protocols.tcp-ip emery <emery-ph@iprolink.ch> wrote:
: -----Message d'origine-----
: De : Javier Henderson <Javier@Cisco.COM>
: Groupes de discussion :
: comp.dcom.sys.cisco,comp.protocols.tcp-ip,fa.cisco,fr.comp.securite
: Date : jeudi, 16. avril 1998 23:54
: Objet : Re: why the Router still answer ? (to a ping or a tracert )

:>"emery" <emery-ph@iprolink.ch> writes:
:>
:>> I have done the config for two Router for a DMZ and  I have desactivate
: UDP
:>> small server , tcp small serveur and no finger etc...
:>>
:>> and i was thincking he will not answer to a ping but he still answer.
:>
:> What exactly did you disable, besides the udp/tcp small
:>servers and the finger services?
:>
:>-jav


First off Hello :)
I dunno if I have understood the question, but the router is still responding
to the ping,since ping program doesn't use tcp/udp protocol, but it uses
ICMP (Internet Message Controll Protocoll) message. Exactly it uses
the ICMP ECHO and ICMP ECHO REPLY messages to query (ping), the host.
So even if u disable all tcp/udp based stuff you're still able to ping it.

Bye all

Lorenzo