This is really weird. I have just configured a router at a remote location and now that i am away from that location I am testing access to the router via IPSec VPN.
From a windows 7 PC I can connect to the remote network and browse the network / access other network devices no problem.
But in Winbox, after the initial connection, the UI stops updating after 10 seconds or so and then eventually drops out.
On my Mac, there are no issues with Winbox. I can remain connected as long as needed and the UI updates every second or so.
I also cannot connect via Webfig on the win 7 PC but it works fine from the Mac. On the Win PC nothing happens after the login screen.