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Port forwarding

By Megtek ·
Hey there...

Got a Netware 5.1 network. Trying to use an SMC Barricade Cable router with a cable modem. I am opening ports for Web Access (7205 and 80) and am not able to connect externally. Internally I am fine. What am I missing?

Also...if port 80 needs to be open on the Web Access server...what happens with my NT IIS web server if it is also on port 80?
Help...please...

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Port forwarding

by CG IT In reply to Port forwarding

You don't have to have port fowarding for access to the internet through the SMC Barricade [unless you are hosting your own web server]. If you are hosting your own web server, make sure your ISP hasn't blocked port 80 [a lot of them have due to worm programs. If your ISP blocks port 80, you'll have to configure IIS web server to listen on a port other than port 80 [say 8080]. You would configure your internal web server to listen on the IIS external interface port 8080 and configure the SMC Barricade to foward inbound port 80 traffic to port 8080. assumes port 80. In other words someone who types the domain name http://www.domain-name.com is really typing a IP address like http://192.168.2.1:80 . when that gets to your router, the router will foward that inbound request on port 80 to port 8080. Outbound [back to the requestor] will be through port 8080 [which bypasses the port 80 block the ISP has].

The SMC Barricade Router is a pain to configure .

However, if you have configured your Barricade to obtain your IP dynamically, and are using the Barricade DHCP for client IP address assignment, IE LAN settings need to be configured with ALL boxes unchecked. Open IE and click stop. Click tools, intenet options, connections, LAN settings. Uncheck all boxes for Obtain IP address automatically and uncheck the box for DNS servers.
If you are not using the barricade DHCP service, then you need to specify a IP address [something like 192.168.16.1], submask [something like 255.255.255.0 and use the Barricade IP address [default is 192.168.2.1] as your gateway address. Your ISP can provide you with their Name Server addresses.

You might have to reboot for these changes to take place.

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Port forwarding

by CG IT In reply to Port forwarding

This configuration [see the Barricade documentation] should allow you to access the internet through the barricade via IE. [Netscape has it's own configuration requirements which are different than IE and since I don't use Netscape and don't have the SMC manual handy I'll leave that out.] SMC does have a manual in PDF format that you can download. If you don't have it, go to their website and download it.

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Port forwarding

by Megtek In reply to Port forwarding

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Port forwarding

by BudTheGrey In reply to Port forwarding

Traffic out should be no problem. If I understand, you want folks from the outside world to be able to access servers behind the firewall. This is often referred to as setting up a "virtual server" -- incoming traffic for various ports is re-directed to specific servers in your protected network.

The limitation is that you probably only have one public IP address from your ISP/cable company. Although the servers on your network all have different IP addresses, there's only one IP address that's visible to the internet.

So, the dilemma you predicted comes true; having two servers listening to port 80 means having to pick your favorite to make "visible" to the internet. The other option is to change the port one of the servers is lestening on (webaccess is probably the wiser choice)

HTH

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Port forwarding

by Megtek In reply to Port forwarding

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by Megtek In reply to Port forwarding

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