

    (.  ), OpenSSH 
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  . -,      -
, OpenSSH          -
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OpenSSH     .    
    (ssh),    (ssh  scp),
-  XI 1    TCP/IP.
SSH1    SSH2.  2  SSH (SSH2)     -
 1  SSH (SSH1)   ,   
.     .  SSH1   -
  SSH2       (.  3 
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 Red Hat  ;      
    ,    .
ssh.  ssh       .  -
         
,     ,    -
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.        
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 X11.    XII,     Red
Hat Linux,      XII  ssh-: 
ssh       ,  -
   xclock;      
.        " XII"
 "   "  .

  OpenSSH

     ,   -
   OpenSSH,    OpenSSH   -
   OpenSSH.



   OpenSSH    .   
  /etc/ssh,       - ssh.   
         .

 18. OpenSSH:                            583