If you are considering implementing a Firewall on your home computer for security reasons, the following requirements must be met in order to maintain access to OhioLINK serivices.
Firewall should allow HTTP on port 80 and 443 to *.ohiolink.edu. IPs associated with those DNS names could come from 196.30.120.* or 131.187.*.*.
Electronic Journal Center - Project MUSE is on journals.ohiolink.edu port 6873.
Firewall should allow traffice to port 9099 to proxy.ohiolink.edu. Use of the OhioLINK proxy should be unnecessary on campus; however, it provides a useful backup access method in the event of a campus IP range recognition failure at the content provider.