There is no remote console build into ConsoleOne for Linux
RconJ can be added by extracting it from \nw65sp5\SYS\SYSZIP\rcon.zip
If you have a copy NetWare 6.5 SP5 it contains the zip file:
Extract this file into /usr/consoleone.
It will complain about overwrites this is ok
When done launch ConsoleOne and look at a NetWare server object. It should now include the remote console, both secure and un-secure.
When ConsoleOne 136e is installed on SLED 10 (or NLD)it doesn't include the Remote console utility as an option in the attributes menu of a server object.
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.