I have a bering v 1.1 floppy, and use it to implement a firewall
gateway on an old Pentium 400 PC.
The shorewall verson is 1.3.11a. There are 2 NIC on the PC. One for
net One for loc.
The gateway implement NAT for LAN to WAN traffic and do DNAT of PPTP
for WAN to a PC on my LAN network.
I used to connect from my MS XP PC in office to a MS XP PC in my home
network via PPTP.
Everything is OK.
Recently, I try to build the bering floppy by my own.
I build the kernel accoring to the steps described in the file :
cvs: leaf/src/bering-uclibc/configs/kernel/2.4.20/kernel.txt
and used the following kernel config file :
cvs: leaf/src/bering-uclibc/configs/kernel/2.4.20/Bering-2.4.20.config
Finally, the floppy is done.
Everyting seems OK until I find the PPTP incoming (from WAN to LAN)
traffic is fail.
I capture the packet traces and find
1. pptp traffic is DNAT (port forward) correctly.
2. but the "PPP LC Configuration Request" (a GRE packet) can't be forwarded.
I have added the following rules in /etc/shorewall/rules
DNAT net loc:<MS server address> tcp 1723
DNAT net loc:<MS server address> 47
I guess I have lost some important kernel patches or have a incorrect
kernel config.
But all I have done is accoding to the "kernel.txt" file.
if there is a bug in the patch file "helpers-2.4.20.patch.gz" ?
Would anyone may kindly help me ?
Thanks a lot !
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