Mailinglist Archive: opensuse-security (260 mails)

< Previous Next >
Re: [suse-security] ipchains: unknown ICMP requests ...
  • From: "BrŠulio Gergull" <webmaster@xxxxxxxxxxxxxx>
  • Date: Thu, 13 Jul 2000 05:17:24 -0300
  • Message-id: <008301bfeca2$d1084360$0200a8c0@xxxxxxxxxxxxxx>

ICMP does not use any port, the number following the IP address reffers to
the type of ICMP request/reply, eg:

8 - echo-request
0 - echo-reply
3 - destination-unreacheable
11 - time-exceeded

Br√°ulio Weimann Gergull

----- Original Message -----
From: Patrick Frisch <p.frisch@xxxxxxxxxxx>
To: <suse-security@xxxxxxxx>
Sent: Thursday, July 13, 2000 3:25 AM
Subject: [suse-security] ipchains: unknown ICMP requests ...

Hi there,

we're using ipchains as firewall. Everything seems to be fine, but now and
then, we're getting ICMP requests (PROTO=1) from low ports (1-8) to our
webservers at ports 0 or 1. I can't figure out, what's the matter with this
requests, it doesn't seem to hurt anyone, that the requests are blocked by
our firewall. Is there any intelligent DENY-rule for this sort of requests ?

Dr. Patrick Frisch
A.I.S. Angewandte Informations-Systeme GmbH
Tel.: +49-234-9734-542 Fax.:

To unsubscribe, e-mail: suse-security-unsubscribe@xxxxxxxx
For additional commands, e-mail: suse-security-help@xxxxxxxx

< Previous Next >