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97 posts

Master Geek


Topic # 27134 15-Oct-2008 17:27
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Hey guys, I'm haing major trouble port forwarding behind two routers.

This is my current setup.

Internet -> Dynalink RTA1320 -> Linksys SPA2102 (for Xnet Fusion) -> 8 port switch -> Computers.

This is what I have configure so far. I have forwarded the port (65437) from the RTA1320 (192.168.1.1) to the SPA2102 (192.168.0.1).

I have created an internal static IP for my pc with the following settings. The internet lays a brick if I use "1" rather than "0" for IP or gateway.



From the Linksys SPA2102 I have forwarded the port to the pc (192.168.0.100) and yet I cannot get Utorrent to turn green. It's a problem with the SPA2102 because if I remove it from the network and forward directly from the RTA1320 to the PC it works fine.

Anyone know why I am having this issue?

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  Reply # 171334 15-Oct-2008 18:47
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The port forward rule from the RTA1320 should go to the SPA2102's WAN/Internet interface IP address. Your rule points at the SPA2102 LAN interface address, which is WRONG.




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  Reply # 171385 15-Oct-2008 23:07
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You mention:

RTA1320 - LAN IP Address = 192.168.1.1 (I don't think this is right, I think you mean 192.168.0.1 here, based upon your screen grab below)

SPA2102 - LAN IP Address = 192.168.0.1

PC - LAN IP Address = 192.168.0.100

Of course, if you plug in your SPA into this configuration, you now have a duplicate IP on the network - ergo, your network won't be able to route out properly.

I think you may need to allocate a different IP address to the SPA, and modify your forwarding rules to that, and of course,  you will need this to come into your WAN port.




 
 
 
 


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  Reply # 171418 16-Oct-2008 08:42
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SPA2102 WAN interface is on RTA1320 LAN interface subnet, with RTA1320 as gateway, e.g., 192.168.1.50, 255.255.255.0, gw 192.168.1.1, and the DNS servers.




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  Reply # 171450 16-Oct-2008 10:32
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Use PPoA half bridge and UPnP imo

Example here:  http://www.ben.geek.nz/adsl-routing-solution-in-detail/

After that is all working you simply turn on UPnP in the SPA, turn on UPnP in utorrent.




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  Reply # 171602 16-Oct-2008 16:53
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OK I think I have done this right. I set it in half bridge mode as per the link and now I do not have the virtual server options in the RTA1320. Is that meant to happen? How can I turn on UPnP in the SPA2102?

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  Reply # 171617 16-Oct-2008 18:21
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Yes that's supposed to happen the Dynalink is not doing NAT and just acting as a bridge to the SPA2102, so single NAT instead of double.

If the SPA2102 doesn't have a UPNP option just foward a single port (from the SPA2102) for utorrent to the pc running utorrent.



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  Reply # 171638 16-Oct-2008 19:46
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kk, I'll do this in the weekend. In the mean time, I remember I have a 4 port Dynalink RTA1335 and so I have this setup going.

Internet -> RTA1335 -> Switch -> PCs
                              -> SPA2102 (through second port)

I enabled UPnP in utorrent and now I have a green icon.

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  Reply # 171720 16-Oct-2008 23:02
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The other option I can see here is to turn off NAT into the SPA2102 (assuming this can be done, I've got an older DLink that refuses to not do NAT...) - then add a route into the RTA1320 for the 192.168.0.1/24, with the gateway as the IP address of the WAN port (192.168.1.50?)

You essentially subnet off your machines, which can be problematic if you're using Bonjour like services to advertise *across* the routers - but your initial diagrams didn't indicate that.

As to whether UPnP will work across that setup, I'm not entirely sure ...

HTH.

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