Re: traceroute

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Antony Stone wrote:
>>By looking at other posts in this thread I've learned that traceroutes
>>are done with echo-requests. Is this true for Linux 2.6.6 ?
>
>
> No, that's true for Windows systems.   Unix machines (Linux included)
uses
> high-port numbered UDP packets.
>
> Therefore you need to allow UDP packets to leave your machine for you
to be
> able to run traceroute from it.

Hmm, this could end up in an unfeasible task, when I do not allow
unrestricted output.

I just found out that traceroute offers a -I switch, that uses ICMP echo
requests instead.
On the other hand one could use -p for a specific base port to get a
certain determinism.

   Florian



...............................

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