TCP and natd issues

[Gary Allan]

Hello,

I've made progress tracing the cause of my natd issues. I tried 
following a suggestion of downloading historical Kernels. Unfortunately 
they don't contain IPFW2 and my ipfw kernel module didn't always load 
cleanly against them. This problem did however give me another area to 
test. (Thanks Simon)

The natd problems only appears when using IPFW2. (IPFW2=yes in 
/etc/make.conf during a buildworld). When the kernel (and 2 userland 
binaries) are compiled to use IPFW everything works as expected.

I also did some more testing under IPFW2 by setting registry keys to 
change WinXPs TCP window size. It had absolutely no affect. TCP sessions 
from Firefox are still blocked and the telnet cmd utility is still 
unaffected. ("Telnet <google_webserver> 80" and "telnet <mymailserver> 
25" work just fine.) I can't identify any distinguishing features 
between the two sessions.

This is with todays latest code.

Are there any future plans to make IPFW2 the default ipfw firewall?

Regards

Gary