Yes, just beat you to it B-F. But I am just stabbing in the dark, and
cold. I (obviously) have little knowledge of these things.
There is a list of five routers we regularly go to on both sides of the Atlantic, and all of them fire up on arrival.
I'm greatly indebted to my friend and don't want to put him to too much trouble, but the idea of getting security out of the way for a while is tempting. I'll chat to him tomorrow.
I feel sure there is just one setting awry, at least, that's before I messed with it!