On Wed, Jun 12, 2002 at 08:49:04AM -0400, Bill Smith wrote: wsmith> Interesting. I couldn't get to the domain. This is really irritating wsmith> when EVERYONE refers to this one document. 8\ Are you using Linux 2.4? Do you have trouble reaching www.kernel.org too? See this document: http://www.gtf.org/garzik/ecn/ In Linux 2.4, ECN is enabled and disabled with a sysctl called tcp_ecn which is documented in: /usr/src/linux/Documentation/filesystems/proc.txt You can find out if your system is using ECN: cat /proc/sys/net/ipv4/tcp_ecn If a 1 shows up there, you are using ECN and may be unable to reach sites which incorrectly filter packets that use the ECN bits. You can try turning ECN support off: echo 0 > /proc/sys/net/ipv4/tcp_ecn However, if the remote site is using ECN and there is a broken firewall between you and them, you may be out of luck. Are you behind a firewall? If so, you might want to check its configuration if possible. -- Charles R. Anderson <cra@wpi.edu> / http://angus.ind.wpi.edu/~cra/ PGP Key ID: 49BB5886 Fingerprint: EBA3 A106 7C93 FA07 8E15 3AC2 C367 A0F9 49BB 5886