From: Ivan (ivan@iip.net)
Date: Sun Nov 12 2006 - 19:12:58 ART
ICMP Unreacheable has type 3. Inside this type there is some code from 0 up to
15 wich more granularproblem. Port unreacheable has type 3 code 3 (Port
unreachable error. When the designated transport protocol (e.g., UDP) is
unable to demultiplex the datagram but has no protocol mechanism to inform
the sender.)
http://www.networksorcery.com/enp/protocol/icmp/msg3.htm
On Monday 13 November 2006 00:10, Lab Rat #109385382 wrote:
> What's the difference between ICMP unreachable versus ICMP
> port-unreachable?
>
> And what are the icmp-types for Traceroute? I have seen "echo-reply",
> "time-exceeded", "unreachable", "port-unreachable" and any combination of
> the four listed in various solutions. If I'm asked a question to allow
> Traceroute back in an ACL, which ones do I have to consider?
>
> Thanks,
>
> Ed
>
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-- Ivan
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