detachable ssh sessions / ssh terminal server

[Enrico Weigelt]

Hi folks,

is there an solution for an detachable ssh (like an terminal 
server, but for text console) ?

I imagine something like what screen(1) does, but integrated 
into ssh:

+ if an connection breaks down, the session (an all processes)
  remain running an can be re-attached.
+ all active sessions can be queried 
+ the output of sessions can be logged and retrieved later
+ xterm window title settings are recorded and shown on query
+ additional monitors (ie. via external programs) can be 
  set up to do something on certain events, ie. notify the 
  user if an detached session gets back to the shell
  

If such an solution doesn't exist already, could anyone please
give me some hints, how to implement this ? 
(probably could be done as an subsystem ?)


thx  
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