>
> On Fri, 20 Sep 1996, Joseph L. Moll wrote:
> > Does anyone know what ICMP code 3 (Destination Unreachable) subcode 13 is?
> > Has RFC1700 been updated? It does not list this subcode.
> >
>
> "Communication administratively prohibited". Stevens v1 describes this
> as being ignored, but the actual 4.4BSD lite kernel handles this as a
> no route to host. I would assume some filtering routers and firewalls
> generate this in response to an attempt to connect to a port that is being
> blocked.
Hi there,
actually ,good ole Cisco router turns this message, if you are trying
to send a packet thru the ACL (aka Access Control List ;-)
Actually , if you are using Cisco "trace " ( similar to traceroute)
this will give you : !A ==> "administratevely prohibited"
Hope this helps
D.B.Tosic Frankfurt/Germany
>
> Dave
>
> --------------------------------+---------------------
> David J. Meltzer | Email: davem @
iss .
net
> Systems Engineer | Web: www.iss.net
> Internet Security Systems, Inc. | Fax: (770)395-1972
>
>
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