IM Gateway through S-2-S connection?

I’'m not sure if this is possible, but wanted to ask if it was: If I have server-to-server communication enabled, and I install the IM Gateway on only one machine, would the users be able to communicate with the external clients?

I’'m not really following what you are asking exactly, but if you mean can users who are not on the server that the gateway plugin is running on use the transports, the answer is no. =)

That’'s what I was asking Thanks!