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At work, I'm connecting to our VPN using a wireless router. Everything works great and I have no problems. At home, I can make an initial connection and ping our servers, connect via RDP and such.

However, after a minute or so, the connection dies. The info in the task bar still says that I'm connected but pinging the servers give me timeout. I've also noticed that when I'm on the VPN, the internet isn't available. I have to disconnect from the VPN (not that I seem to be on it) and then surf places. (The last part could be due the internet traffic being directed through VPN, though.)

We've got fiber here and the brand of the modem is Dlink DIR-645 (it's the round one), hardware version A1, firmware 1.01.

I'm almost certain it's my router and its settings that are to blame. Tested on two computers (Win7 and Win8). When connecting via 4G-modem, I have no problems either.

I've read about MTU but it's already set to maximum 1500 so that's not it, either.
What can I do about it?
What more can I investigate?

EDIT:

I've found two more link that might be of interest as a reference. Sadly, there's no answer on how to solve my problem (the first one) or the suggestions doesn't work out in my case (the second one).

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Do you have another router to confirm the problem is actually with the router? –  Ramhound Feb 15 '13 at 13:34
    
Yes, at work I'm connecting without any problems. It only occurs on my router and on any computer I've tested. The same computers work perfectly with other routers. I've tested all possible four cases. and the common denominator is the router. –  Konrad Viltersten Feb 15 '13 at 17:07

1 Answer 1

I'm having the same issue and don't know how to fix this neither (have been googled for days). This is DIR-645 issue for sure since I don't have the same issue when switched back to my original LinkSys router

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That suck. I've been googling it for days too. And I can't really work from home if I can't stay on the VPN. Does the following also happen to you? When the connectivity to the VPN is lost, I noticed that I also lose the internet access. The computer still says that there is access to the net (via both the VPN and the usual network) but I can't ping anything! Do you have that too? –  Konrad Viltersten Feb 16 '13 at 9:11

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