Great replies, guys - thanks. I'll wade through 'DMZs', port-forwarding etc which are black arts to me. Sounds, though, as if I should be ok - I'm happy with the concept of dyndns.com. and static IPs and yes- my ISP, as usual, allocates floating. I understand that the server I am to access needs to have a fixed IP for me to allow me in. It was the 'big picture' security angle I was unsure of.
