it seems there is no easy way to know the IP, most of the suggestions  are to pass the client IP to the serverhttp://www.dotnet247.com/247reference/msgs/32/164918.aspxhttp://groups.google.com/groups?q=Remoting+client+IP&hl=en&lr=&selm=%23m%23%24fQtVEHA.2408%40tk2msftngp13.phx.gbl&rnum=5http://blogs.msdn.com/manishg/archive/2004/10/16/243414.aspx