Trying to add a GPG key from a well-known keyserver (keys.mit.edu) but I'm getting timeouts:
$ gpg --keyserver keys.mit.edu --recv <xxxxxxx> gpg: requesting key <xxxxxxx> from hkp server keys.mit.edu gpg: keyserver timed out gpg: keyserver receive failed: keyserver error
Same thing happens with other keyservers such as keys.gpg.org.
Googling for this throws up multiple reports of it being caused by a firewall blocking access to port 11371 (the hkp protocol). I tried opening this port but it makes no difference.
Suggestions welcome.
poc