I use an L2TP/IPSEC vpn client behind a CG3000DCR Comcast Business Gateway Router, and while it establishes a connection initially, after about 3mb of data transfer, it stalls out, doesn't do any more transfer, but stays connected.
This has happened since the new Comcast router was installed. Neither the VPN client nor server (in TX) have changed. The connection works fine from my Comcast home connection without issue.
I've seen various solutions, most of which point to trying to talk Comcast into giving me a different modem. This one apparently has serious issues, and the different brand modems are apparently scarce.
I've tried the following as a workaround:
- Set up port forwarding in the Comcast router for explicit ports that L2TP requires. No change
- Put my PC in a DMZ, and try the same thing. After doing 3mb or so of transfers, it stalls out.
Are there any other workarounds I can use to get a reliable VPN connection while I fight with Comcast on this? Note: we have Static IP.
Best Answer
What about putting it in bridged mode, and using your own router to see if the problem still happens. My guess some kind of problem in the routing side of things, persistent NAT? Anyway, just about no one that I know uses carrier provided gear, mainly for security and manageability concerns. Even if you get something else, you should consider something business class, like a Meraki or similar.
Good luck!