-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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 ............................... Someone on the net said: I am Clinton of Borg. Prepare to see me make a fool of myself. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Debian - http://enigmail.mozdev.org iD8DBQFA40d1wT2gPfZm6tURAn4AAJ9OfnD/kMw7Ua1ss/7lRfQzIbo5SgCfezgN Ch0ifus6ReGzusVIarwR+z8= =bIgk -----END PGP SIGNATURE-----