I've a small network, 1 windows 95 (192.168.1.2) and 1 linux box 
(192.168.1.1). The linux box is connected to the Internet by modem. I use 
IP masquerading to enable the windows 95 box to get on the Internet. I 
think I have most of it working. The only problem left is that the 
connection on the windows 95 box gets very slow most of the time. My 
browser often stalls for several minutes in the middle of a page. The same 
thing goes for the other applications like usenet and e-mail. On the linux 
side everything goes smooth.

Here are some settings:
Routing on the windows box:
Active Routes:
  Network Address          Netmask  Gateway Address        Interface 
 Metric
          0.0.0.0          0.0.0.0      192.168.1.1      192.168.1.2 
      1
        127.0.0.0        255.0.0.0        127.0.0.1        127.0.0.1 
      1
      192.168.1.0    255.255.255.0      192.168.1.2      192.168.1.2 
      1
      192.168.1.2  255.255.255.255        127.0.0.1        127.0.0.1 
      1
    192.168.1.255  255.255.255.255      192.168.1.2      192.168.1.2 
      1
        224.0.0.0        224.0.0.0      192.168.1.2      192.168.1.2 
      1
  255.255.255.255  255.255.255.255      192.168.1.2          0.0.0.0 
      1

Routing on the linux box:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
193.74.216.252  0.0.0.0         255.255.255.255 UH    0      0        0 
ppp0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0       27 
eth0
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0       10 lo
0.0.0.0         193.74.216.252  0.0.0.0         UG    0      0        0 
ppp0

ipfwadm -F -l
IP firewall forward rules, default policy: deny
type  prot source               destination          ports
acc/m all  192.168.1.0/24       anywhere             n/a

As soon as my PPP connection gets active I see the following error twice on 
the linux box. Don't know if it is related to the problem:
modprobe: can't locate module binfmt-0
I cannot find this module in modprobe -c. Anyone know what this module is? 
I used to have a simular message for ppp but this disapeared when I made 
PPP a module in the kernel.

I get the impression packets get dropped somewhere, but have no idea where 
to look. I've done some experimenting with tcpdump with no effect (mainly 
because I'm lacking experience with it I guess).

Any suggestions, ideas are most welcome.

Regards,

Luc
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