Well. I ended up having to call the premium rate number, which is the only way you get to speak to somebody that can actually help as the email support is *so* slow. Whilst I understand that people who need support setting up routers should pay for help, I really don't think it's right that when a product is not working as it should that you should have to pay for support - or wait days for a literate response by email.
However - they sent me some beta firmware and some very strange suggestions which made no difference.
Disabling some of the Load-Balance policies fixed the remote access issues but then transferred the problem internally - so the office had very intermittent internet connectivity.
In the end, I took screendumps of every screen on the router and reset it - then set it up again with exactly the same information.
Hey presto - it works, same config ... no rhyme nor reason as to why it didn't work reliably the first time - and a bitter taste in my mouth with the quality of the Draytek / SEG support.
We're going to send back all of the Drayteks for the staff to use at home (apart from this one as I'm not going to the aggravation again) and stick the Funkwerk VPN appliance back in.
I'm genuinely hacked off - I moved away from Drayteks years ago because the 2800s were so unreliable and am kicking myself for coming back.
