Port Forwarding Question

[shardian]

Hi all.

I have a bit of a weird setup at home with my network. Scenario is as follows
*ADSL2 Modem is a DLink 504T. It has an inbuilt router and provides 4 wired connection out the back of it. (192.168.30.1)
*Wireless Router is a Linksys WRT54GP2. It provides the wireless connection (obviosuly) and has 3 wired connections on the back of it. (192.168.15.1)

I have a PC that I use for gaming etc and it hangs off the Linksys. I have 2 laptops, (mine and the missus) that are used for whatever is required and they both connect to the router via wireless.

Also I have an Xbox360 that is hopefully going to be able to connect through the wireless to Xbox Live for games too, but that isn't the issue....yet.

I have a windows home server that is plugged into the wireless router. Currently it is addressed 192.168.15.2

It backs up all connected PC's so its handy and it also has the added function of remote access through a website. However, it requires that certain ports be forwarded to it.
Specifically 80,443 and 4125. The remote part is good because I can access any other machines that are connected to it and powered on remotely as well.

Only problem is the port forwarding. I've set it up when I used to have cable at another house and it worked great, but the cable modem had no port forwarding settings for me to adjust. Now with the ADSL router and the wireless router, I'm not sure exactly how to forward the ports properly.

Obviously I have to forward the ports on both devices and on the wireless router this is quite simple, but on the ADSL modem its not so straight forward. (no pun intended)

It requires that a forwarding rule go to an IP address that is registered, but it won't let me register an address that is in a different subnet from it. (modem is 192.168.30.1, server is 192.168.15.2)

I know I could put the server straight on the back of the ADSL router, but then the rest of the PC's on the network can't see it and won't be able to be backed up and I wouldn't be able to access its console.

Could anyone point me in the right direction for setting this up?? Its really annoying me now and I'm sure I'll have similar problems when I start using the Xbox online.

Thanks.

 

[CiscoGuy33]

shardian,

Just go to Linksys and download the User Guide -

http://www.linksys.com/servlet/Sate...nksys/Common/VisitorWrapper&cid=1116265541785

Here is just part of what I found for port forwarding -

Q. I need to set up a server behind my Router.

A. To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using.
For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and
port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the
documentation provided with the server you installed. Follow these steps to set up port forwarding through
the Router’s Web-based Utility. We will be setting up web, ftp, and mail servers.

A. Access the Router’s Web-based Utility by going to

http://192.168.15.1

or the IP address of the Router.
Go to the Applications & Gaming => Port Range Forwarding tab.

B. Enter any name you want to use for the Application.

C. Enter the port range of the service you are using. For example, if you have a web server, you would enter
the range 80 to 80.

D. Select the protocol you will be using, TCP or UDP, or select Both.

E. Enter the IP address of the PC or network device that you want the port server to go to. For example, if
the web server’s Ethernet adapter IP address is 192.168.15.100, you would enter 100 in the field

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I am sure you will find the same at DLink for the other - I think you should look at putting that in "bridge" mode if it is not already and let it just be the DSL "modem" .

Just some thoughts!


E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[CiscoGuy33]

shardian,

Reading your post again - I not sure if you need the double router, check if you can just put that D-Link in "bridge" mode so that it just acts like a DSL "modem" and brings the DSL/ISP info straight to the Linksys!

Check with your ISP if you have to - they should be able to answer this for you!

Hope this helps!

E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[dearingkr]

CiscoGuy33 is right.
Put your DLink DSL modem in "bridge" mode.
This will put the public IP on the WAN interface of the Linksys and you only have to mess with one device config.
Otherwise you are double-NATing, which complicates things.

MCSE CCNA CCDA