Rexec client does not work in RH 7.0.  I localized the problem to the call
to getservbyname in the rexec source.  This call returns the wrong port
number for establishing the remote connection.  The port number returned by
the following code fragment is port 2 instead of port 512 as listed in
/etc/services

	  service = getservbyname("exec","tcp");
	  port_exec = service->s_port;

as revealed by gdb "print port_exec" after breaking on the appropriate line
in rexec.c (132). Setting the value of port_exec to 512 corrects the
problem and allows the rexec command to function correctly and terminate
normally.