. -      ,     
 ,      *  ?.   
    (*).

 CheckHostIP yes \ no.   yes ( ),   IP-
           known_hosts.
      .

 ForwardXIl yes | no.    yes   -
 XII       
DISPLAY. (      XII 
  -X  .)    ,  
  Red Hat ForwardXIl   yes.   
' XII , XI [Forwarding   
 yes   /etc/sshd_config   (.  "X 11 Forwarding"  
"  /etc/ssh/sshd_config"  ).  -
    " XII"  " 
 "    .

 HostbasedAuthentication yes | no.    rhosts,
   yes.        (
).

 HostKeyAlgorithms .      -
,    ,    .
     ssh-rsa, ssh-dss (  
 ssh-rsa, ssh-dss).

 KeepAlive yes | no.  ,   , 
 yes ( ).   ,   ssh 
scp           
,      .      -
 ,     .
   TCP- keepalive,     -
  IP- (. ).     
  "ClientAliveInterval"  "  /etc/ssh/sshd_config"
 .

 StrictHostKeyChecking yes I no | ask. ,   OpenSSH 
   known_hosts , ,  ,   .  ask
( )        -
   , no      ,  yes  
    .  yes  ask   
OpenSSH    ,    .  
     yes  ask.

 User .   ,     . -
    Host.      -
       ,    -
   .

594  V.     