[Sis-SCPS-INTEREST] ZeroWindow segment

[miggy1 at free.fr]

hi everybody,

I'm trying to install a SCPS (on a debian with 2.6.12 kernel) to test if it
could better our satellite communications.

I encountered the following problem (ZeroWindow segment):

No.     Time        Source                Destination           Protocol Info
     26 7.340398    192.168.20.64         www.mappy.com         TCP      3404 >
www [SYN] Seq=0 Ack=0 Win=65535 Len=0 MSS=1332 WS=3

Frame 26 (68 bytes on wire, 68 bytes captured)
Linux cooked capture
Internet Protocol, Src Addr: 192.168.20.64 (192.168.20.64), Dst Addr:
www.mappy.com (80.12.247.1)
Transmission Control Protocol, Src Port: 3404 (3404), Dst Port: www (80), Seq:
0, Ack: 0, Len: 0

No.     Time        Source                Destination           Protocol Info
     27 7.340465    10.99.98.1            www.mappy.com         TCP      3404 >
www [SYN] Seq=0 Ack=0 Win=65535 Len=0 MSS=1332 WS=3

Frame 27 (68 bytes on wire, 68 bytes captured)
Linux cooked capture
Internet Protocol, Src Addr: 10.99.98.1 (10.99.98.1), Dst Addr: www.mappy.com
(80.12.247.1)
Transmission Control Protocol, Src Port: 3404 (3404), Dst Port: www (80), Seq:
0, Ack: 0, Len: 0

No.     Time        Source                Destination           Protocol Info
     28 7.341114    www.mappy.com         10.99.98.1            TCP      [TCP
ZeroWindow] www > 3404 [SYN, ACK] Seq=0 Ack=1 Win=0 Len=0 MSS=1332
WS=0

Frame 28 (64 bytes on wire, 64 bytes captured)
Linux cooked capture
Internet Protocol, Src Addr: www.mappy.com (80.12.247.1), Dst Addr: 10.99.98.1
(10.99.98.1)
Transmission Control Protocol, Src Port: www (80), Dst Port: 3404 (3404), Seq:
0, Ack: 1, Len: 0






It seems the connexion is impossible between the Gateway and the destination.




My rfile is :
# GW Resource File - comments are allowed, starting with '#'.
#    Comments can be anywhere EXCEPT between parameter values.

# interface A info
AIF_NAME        eth0
AIF_RATE        100000
AIF_BUF         32768
AIF_CC          1
AIF_TCPONLY     1
#rajoutes
#supprimes
#AIF_MTU        1500
#AIF_TAP_NAME   tap0


# interface B info
BIF_NAME        eth1
BIF_BUF         25600
BIF_RATE        128000
BIF_CC          2
BIF_MINRTO      1000
#BIF_TAP_NAME   tap1
# IPFW info
C_DIVPORT       52000
#C_TAP_REMOTE_ACCESS 1

AIF_TUN_NAME    tun0
BIF_TUN_NAME    tun1
C_TUN_NAME      tun2


Thanks for any help

Miguel