NETGEAR ProSafe SRX5308 can't access router on WAN 1

I have a NETGEAR ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308. On WAN 1 i have a NETGEAR DGN2200 connected to adsl and on WAN 2 I have a sky provided THOMSON router.

The NETGEAR on WAN 1 is connected to BT, the THOMSON to sky.

The internet works fine but any port forwarding for incoming is blocked. I was going to dial in to the NETGEAR on WAN 1 and change the operating mode to modem only but can't get into it. The internal address for the PROSAFE is 192.168.0.2, the address for the DGN2200 192.168.6.1 and the address for the THOMSON is 192.168.5.1.

The external addresses for the PROSAFE are 192.168.5.3 on WAN 2 from the THOMSON and 192.168.6.3 from the DGN2200.
I can get into the THOMSON using the address 192.168.5.1 from any machine on the internal network but when i try 192.168.6.1 to get into the DGN2200 i only get page cannot be displayed.

Any ideas?
McSnoogins1Asked:
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PerarduaadastraConnect With a Mentor Commented:
If you switch both the Netgear and the Thomson modems to bridge mode and get the SRX5308 to handle the authentication to each ISP network, you'll find that the kind of configuration you want to do is a) easier, and b) possible.

The way you have things at the moment, each modem is NATing to the WAN interfaces of the router, which (presumably) is in turn NATing to your LAN; this is pretty much guaranteed to cause the kind of problems you're encountering, and will prevent services such as VoIP from working at all.
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McSnoogins1Author Commented:
Thanks Perarduaadastra, I'll try that tomorrow and let you know how i get on.  Do you know if that can be done with SKY routers? I'm going to have a search online myself just now.
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PerarduaadastraCommented:
Sky routers are pretty well locked down, if previous experience is anything to go by.

You can use various tools to obtain the credentials necessary for connecting to Sky's network, such as this one:

https://www.cm9.net/skypass/index.cgi

The site uses a self-signed certificate so the browser will complain about it, but I've used it before and no Bad Things happened...

This will winkle out the details you need to enter into the SRX5308, but you will still need an ADSL modem in bridge mode to connect to your router. You can find a Netgear DG834Gv3 or above on eBay for next to nothing - I've several of them because I'm just too mean to throw away working equipment. These routers can be configured to function just as bridge modems, and are probably cheaper to buy second-hand than the Netgear DM111p or the Draytek Vigor 110 or 120 ADSL modems
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McSnoogins1Author Commented:
Replaced both routers with ADSL ethernet modems in bridge mode and used the SRX5308 to do the authentication. Everything working perfectly.
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