> I'm seeing the same thing: works from 80.*, doesn't work from 83.*. > Note that www.mercer.com seems to suffer from a bad case of paranoia, > they filter traceroute and ping, so probably a misconfigured firewall > there. hk.yahoo.com traceroutes just fine from a 212.* address:
TCP port 80 can also be used to traceroute... hping is your friend. http://www.hping.org (or apt-get install hping2 on apt-friendly distributions) Rubens
