After I upgraded my Firebox, I can't use PPTP any more to connect my mobile phone to VPN for the Firebox.
Am I missing something here?
Yes, it has been removed as it´s not secure.
Use IPSEC, SSL or L2TP instead
I think the original question was a "seed" question for this new forum, but the WatchGuard guy (Greg Gilbraith) should have added an answer so it didn't fool anyone down the road. Yes, Mada has the correct answer, though!
Fireware 12.5 Update 1 build 599856
WSM 12.5 build 596863
ISP = Spectrum Cable 100 x 10 service
Management computers: Win 8.1 Pro 64-bit, Win 10 Pro 64-bit, Server 2012 R2