Archived from groups: comp.networks,alt.internet.wireless (More info?)
I have a DSL modem connected to an SMC 7004WBR (which SMC has discontinued
and no longer supports) with a few machines behind the 7004. The 7004 is
a DHCP server for those machines.
One machine is also aliased to an internal (192.168.123.x) address outside
the range of the DHCP pool. That alias is used to reference the target
machine as a "virtual server" in the wireless router's configuration.
This is so the server can provide services outside the router/firewall
(http, mail, etc). The router's external address provides access to these
services.
The server, though behind the firewall and having two internal addresses
(of the form 192.168.123.x), responds only to the router's external
address (which is actually assigned to the DSL-modem-facing side of the
SMC router).
So, for example, I see the following anomalies:
1. from inside the router/firewall, I can only access services on the
server using the external address of the router. I would expect that
I should be able to access them using the machine's internal
(192.168.123.x) address.
2. I can not ping the router from the cable-connected server, but can from
the wireless linked machines.
3. From inside, I can only access services on the server by opening the
port on the firewall and using the external address.
Can anyone give me a hint how I might access my behind-the-firewall-but-
publically-reachable server from behind the firewall?
Thanks very much.
Richard
I have a DSL modem connected to an SMC 7004WBR (which SMC has discontinued
and no longer supports) with a few machines behind the 7004. The 7004 is
a DHCP server for those machines.
One machine is also aliased to an internal (192.168.123.x) address outside
the range of the DHCP pool. That alias is used to reference the target
machine as a "virtual server" in the wireless router's configuration.
This is so the server can provide services outside the router/firewall
(http, mail, etc). The router's external address provides access to these
services.
The server, though behind the firewall and having two internal addresses
(of the form 192.168.123.x), responds only to the router's external
address (which is actually assigned to the DSL-modem-facing side of the
SMC router).
So, for example, I see the following anomalies:
1. from inside the router/firewall, I can only access services on the
server using the external address of the router. I would expect that
I should be able to access them using the machine's internal
(192.168.123.x) address.
2. I can not ping the router from the cable-connected server, but can from
the wireless linked machines.
3. From inside, I can only access services on the server by opening the
port on the firewall and using the external address.
Can anyone give me a hint how I might access my behind-the-firewall-but-
publically-reachable server from behind the firewall?
Thanks very much.
Richard