Setting single Webservice Proxy connection

Hi, I want to connect to a single webservice call behind the proxy and rest should be working as normal. My question is can we link to a single webservice using a proxy and keep the rest of the services/link work as normal.

Also looking for a clear answer on this one https://mxforum.mendix.com/questions/21762/Webservice%20call%20behind%20the%20proxy%20issue

Thanks in advance

Cheers,

Savan