On Fri, Sep 27, 2002 at 01:38:44PM -0500, John Hawley wrote: > Did something change in the kernel between 2.4.17 and 18 concerning ICMP > fragmentation? I've been noticing (and getting complaints from local > users) that some web sites are unaccessable. IIRC, ECN (Explicit Congestion Notification) was turns on by default. This causes problems with some firewalls (that haven't been upgraded). Jeff Garzik has a web page with details about this. To turn it off `echo 0 > /proc/sys/net/ipv4/tcp_ecn` Nate