I've got a machine with the following network interfaces:
eth0 - internet (a static ip)
eth1 - in house network 192.168.1.1
ppp0 - dialup server 192.168.1.200 - server 192.168.1.201 - client
ppp0 is dialed into from another Linux machine that provides internet
access for another network masquerading through the ppp interface so I end
up with the following:
network #2 - eth0 - Linux+masq - ppp - Linux+masq - eth0 - internet
!
network #1 - eth1 --------------------------+
However, for some reason I cannot seem to ping or access the client Linux
machine dialing into the Linux server.
The Linux client and clients under it CAN access the internet fine. But I
cannot seem to go back the other direction.
If I ping the client Linux machine I see the modem TX light flash as it
attempts to ping the Linux machine dialing in via ppp but the RX light
never flashes, so I know the response is not being filtered out as it returns.
My question is, is it possible to create somehow a rule that prevents a
ping from being replied to?
I have almost identical sets of rules on the main(server) Linux box except
for an extra set to allow traffic from the ppp0 interface to pass to eth0
in addition to the passing of information from eth1 to eth0 and there is no
problem pinging eth0 or telnet'ing to eth0.
Brett Gilbert
[EMAIL PROTECTED]
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