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Author Topic: Configure Router for Windows VPN Server  (Read 8083 times)


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Configure Router for Windows VPN Server
« on: April 15, 2019, 12:41:00 PM »


I had a router with DD-WRT firmware running ahead of our Windows VPN server.  I just swapped it out for a DIR-865 and now I can't get the tunnel working. My current settings:

Connection: Dynamic IP (DHCP)  (I have Cox cable)
Subnet Mask
Enable DNS Relay: (tried both on and off)
DHCP Server: on
I have Virtual Servers and Port Forwarding set up to forward 1723 and 47 to the Server's IP address
I disabled SPI
Set NAT endpoint filtering to Independent
Currently I have checked all ALG options.  I started with IPSec (VPN) unchecked.
I enabled WAN Ping Response for troubleshooting

I can ping the external IP address successfully, but when I try to connect it says:
Connecting to VPN (briefly)
Verifying your sign-in info...
Then hang for a while, and tries again.
Finally I get an error saying "Can't connect to <VPN>.  The remote connection was not made because the attempted VPN tunnels failed.  The VPN server might be unreachable.  If this connection is attempting to use an L2TP/IPsec tunnel, teh security parameters required for IPsec negotiation might not be configured properly.

Any hints on how to troubleshoot, or what setting I might have wrong?



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    • Router Troubleshooting
Re: Configure Router for Windows VPN Server
« Reply #1 on: April 15, 2019, 12:48:24 PM »


  • What Hardware version is your router? Look at sticker under the router case.
  • Link>What Firmware version is currently loaded? Found on the routers web page under status.
  • What region are you located?

DIR-865L or 867?

Internet Service Provider and Modem Configurations
  • What ISP Service do you have? Cable or DSL?
  • What ISP Modem Mfr. and model # do you have?
Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.