On 27/04/2021 17:27, Philip Herlihy wrote:
Worth adding that a "dynamic DNS" facility will be helpful, unless you can get
your contact to tell you his/her IP address (seemingly unlikely in your case).
No-IP is still free, and works well, though the free version has to be
"refreshed" (easy enough) once a month. With dynamic DNS a small utility runs
on the host which updates a DNS record, so you can connect using a fixed DNS
name.
https://www.noip.com/what-is-dns

noip are pain. You have to keep saying yes I do still want to keep my
domain or they delete it after some time.

IMHO duckdns.org is a good choice for a free dynamic DNS now.

--
Brian Gregory (in England).