Why not talk your Tech people, who BTW are making the rules and typically cause the grief and who should be the ones providing a parallel solution, into providing you a wireless router, DNS with Ethernet to serial device and be able to run your system from any computer even from home, actually from anywhere in the world.
Doing this there are no security issues into their primary systems as the wireless router is basically its own self contained network, a router with WiFi then you have another link into the weather station but for me WiFi is something I generally turn off with this type of setup but it is an option.