      UNIX  -
   (.  " "  27) fork(),  -
             -
,    .    fork()    -
,    ,        
fork ().       ,    
fork ()      ,   
     ,    
  . (    ,   -
    (copy-on-write)      
     ,   .)

         -
  .       ,    -
, , ,         -
,   .    ,  -
     ,   
   ,     .  -
 ,  Solaris,      -
    SMP (symmetric multiprocessing   -
) .      2.6     API-
   POSIX,    
  Solaris,     .

RHEL      Red Hat Enterprise Linux.

IPSecurity(IPSec)

IPSec      ,   Internet-
    IP-. IPSec    IPv4
(. )    IPv6 (. ).  -
  IPSec    "  "  .

 IPSec   ,       
 IPSec   ,    IP.

RHEL.      Red Hat Enterprise Linux.

 / (10)

         -
    AIO,       
     ,   .  
    .

 /    ,   -
    .      
,        .

RHEL.      Red Hat Enterprise Linux.

 .  Linux 2.6 957