[R-gui] client-server R over sockets

Is there an R gui that can provide a client-server interface to R over 
sockets including X11 forwarding from the server?

Normally under unix this can be effectively done with ssh -X to the 
server and running R inside an xterm. But I am running R on a massively 
parallel computer where only a reduced Linux is present so ssh is not 
possible. It is however possible to communicate over sockets.

Thanks,
George

George Ostrouchov
Statistics and Data Sciences Group
Computer Science and Mathematics Division
Oak Ridge National Laboratory
865-574-3137  http://www.csm.ornl.gov/~ost