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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: roobieroo on February 01, 2011, 08:54:58 PM

Title: Blocked incoming GRE packet preventing VPN connections
Post by: roobieroo on February 01, 2011, 08:54:58 PM

I've been fighting with getting VPN connections working properly with my Dlink router. I set up virtual servers for PPTP and L2TP and could usually get the first attempt to work. Subsequent client connections would always fail.

The logs display the following-

Dropped GRE packet from 192.168.0.10 to 64.232.xxx.xxx as unable handle packet header
Blocked incoming GRE packet from 64.232.xxx.xxx to 76.105.xxx.xxx

What seemed to fix it was going to Firewall Settings and setting UDP Endpoint Filtering to Endpoint Independent and TCP Endpoint Filtering to Address Restricted.

I'm just posting this since I had a hell of a time finding the answer online so hopefully this shows up in search for the next poor soul who has the same issue.

Title: Re: Blocked incoming GRE packet preventing VPN connections
Post by: jywang on March 29, 2011, 04:44:52 PM

OMG!!! THANK YOU!!!!

After years of rebooting the router in order to reconnect, I can't believe I finally found the solution in your POST.  THANK YOU!!!

I registered for this site just to write this comment!