Getting 789 errors when trying to access outside VPN's

RouterOS General
1

I have some servers on a Mikrotik network that are working fine and they need to connect via VPN to a network outside connecting to a Meraki router. I am using the builtin Windows VPN with L2TP and settings that work fine from other PC’s around the network and every time I try accessing I get a 789 error. Tried on Windows 10 machines and Windows server 2019.

The remote network never even sees an attempt. I can access fine from my home PC running on T-mobile but using the same settings on devices on my Mikrotik network always get a 789.

Any thoughs on whats going on that i am missing? Seems to be Mikrotik related as same setting work fine elsewhere.

Andy

2

Have you tried making any changes that can be found through the search?

3

Found the problem. Had port 500 blocked in my forwarding rule. Disabled and now everything is working.

Thanks!