Thank you Scriptrunner, I should have mentioned this in my initial post but unfortunately it is not feasible to limit access by IP address as we have a large number of users accessing the site from different IP address some of which will be dynamic. We already have a firewall in place which allows access to port 715 from their IP address.
I have had more of a look around these forums as I am relatively new to wordpress and am coming to the conclusion that this is not going to be easily possible. If I figure anything out or find a solution I’ll post it here.
