my isp blocked icmp packets 'because they use up bandwidth' but only on their subnet. I can ping whoever I want and get a reply if they're outside the subnet. On Wed, Feb 11, 2004 at 01:58:59PM -0500, Chuck Hallenbeck wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi gang, > > Now that I have a cable modem connection, I have implemented a > firewall and have been tinkering with it. I have been unable to > ping any hosts on the net, and have disected my firewall up one > side and down the other looking for the problem. Ping uses ICMP > packets. > > Finally, out of either desperation or inspiration, not sure > which, I called my ISP and mentioned that I am unable to ping > anyone on other systems. He said that they have "disabled ICMP > packets" due to security concerns. Since ping is the only thing I > know about that uses ICMP, I decided I would not press the point > until something else came along. > > Does anyone know what else I ought to be on the lookout for? > > What about audio streams that persist over long periods of time? > I occasionally lose a connection to a realaudio stream with the > message "the server has timed out", and this seems sometimes to > happen right in the middle of playing something, not after a > lengthy silence. No more silences with cable modem. Is it > possible that a remote host might be trying to ping me to see if > I am alive, and my inability to send or receive ICMP packets > makes me appear absent? > > If anyone has any light to shed on this issue of what trouble I > might expect with my ICMP packets blocked, I would appreciate > hearing about it. > > Thanks, > Chuck > > > - -- > The Moon is Waning Gibbous (70% of Full) > In a world without Fences or Walls no one needs Windows or Gates. > My home page is now at http://www.mhcable.com/~chuckh > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.2.3 (GNU/Linux) > > iQCVAwUBQCp7gjVdG8M9x9tGAQL79gP/eKF2ypUhoQQVdomGC/dK8q0jrzGfcIO4 > J27yts/SeT6/RZxqWxsePpIFJJDOvgL3DXM0K8qYxXzC6uRmI7VjtUVN2Dn1869W > ASkurEWJQTJVV9jlwbWv4UtGEGFnR7g/ZWZgP9zhMEvSQuiMq8n9xku6JK7kzjws > CrqmymcPfOA= > =YziQ > -----END PGP SIGNATURE----- > > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup -- Always borrow money from a pessimist; he doesn't expect to be paid back.
