Hi all,
I hope someone here can help me with the following problem:
we have a router/firewall machine which connects our local network to the
internet. As there are also some servers in the local network working as
mail- and webservers, we are using DNAT to make this machines reachable from
the internet.
The firewall-machine is connected to the internet with two connections, one
ADSL connection and one ISDN-link. So NAT only seems to work with the
connection which is also the default gateway.
Example:
this is the shorewallrule for our web-server
DNAT net loc:192.168.0.161 tcp www
which works fine as the default gateway is the ADSL-link known to shorewall
as net.
But the rule
DNAT isdn loc:192.168.0.161 tcp ssh
won''t work, because it sends it''s answers out over the
dsl-link. Everything
works fine for the services running at the firewall, they send their packets
back over the correct connection, but it doesn''t work with nat.
ist there any trick to make this possible?
thanks in advance
Ralf Glauberman
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