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Is it possible to map a network drive in Windows 7 connecting to a NAS on a another local network (behind a firewall)?

Here's my setup (so far): - Linksys wireless router connected to the internet - Buffalo LinkStation Live connected to a LAN-port on the router

From outside the LAN I can get in contact with a shared folder on the LinkStation (via ftp or webaccess). It's also possible on the LinkStation to mark a folder "Windows", which means it can be accessed using SMB. If I do so, I'm able to map the drive (using "net use") within the LAN.

But what about from outside? Is it even possible to map a SMB drive that situated on another local network?

I've opened port 445 and 135-139 in the router and forwards traffic to the LinkStation.

What do I do from here?

Any suggestions?

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You don't want to transport plain SMB over the public Internet. It is not encrypted! Look if your Linksys router supports VPN. (Virtual Private Networks). Configure VPN on your router. Install a client on your outside PC and connect to the VPN. As a result you are like physically connected to your LAN and are able to access your shares.

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I'm not sure if it's possible to setup a VPN on my router (LinkSys WRT54GC). I think not... It has a "VPN passthrough"-tab, with the following settings: IPSec Passthrough L2TP Passthrough PPTP Passthrough - All of them enabled. – SanSaurus Oct 10 '10 at 14:36
Perhaps your NAS-box can provide VPN. Or you can setup a VPN server on one of your LAN computers. Or perhaps you can install an alternate firmware on your router. – omnibrain Oct 10 '10 at 14:46
The WRT54GC cannot be upgraded with alternate firmware, and I cannot find any way to do it on the NAS. So I think I'll have to set up a VPN server on my network to route the trafic through. Thanks for helping! – SanSaurus Oct 12 '10 at 18:42

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