Hello,
Hopefully you searched through the forums. I think you may be able to do this:
user:pass@ip/invoke/wm.tn.receive
so it is username, colon, password, at-sign, ip address. I am not 100% sure if that is all you need or if there is not just a form page to enter that information in, but it may be worth a shot.
#webMethods#Integration-Server-and-ESB#edi