     group.  xinetd     root,
  user .  server    ,
  ,xinetd   .

 only_from  ,  xinetd  
.    IP-,     
       DNS.    IP-
   : 192.168.0.0     
 192.168.

 disable       . 
,   Red Hat,    
xinetd    disable   yes.   -
          xinetd. d -
        xinetd:

 /sbin/service xinetd restart

Stopping xinetd:                      ( xinetd)               [ OK ]
Starting xinetd:                      ( xinetd)                  [ OK ]

  

         -
 TCP    chroot.

 TCP: - 
(/hosts, allow  /hosts, deny)

       ,  -
 :

      ,    -
 .

         ,  
.

          
( ,   ,  ).

  -    TCP Wrappers (
TCP),      ,   libwrap.a,  
       /etc/hosts. allow 
/etc/hosts.deny.      ,  -
           
   ,     .

   hosts. allow  hosts. deny   :

_ : _ [: }

 _          -
 (, portmap, vsftpd, sshd), _    -
      (. . 11.3),     
 , ,    _   
    _.

 11.  :                     427