

   ;     .  
   ,   iptables   
Red Hat.        .

 ACCEPT.   .

 DNAT. Destination Network Address Translation (   -
).    .

--to-destination ip[-ip][:-]

  SNAT   to-source,     -
       (   )  -
   PREROUTING  OUTPUT  NAT    
 ,    .   -
   PREROUTING  NAT ,   
TCP-  66.187.232.50   192.168.0.10.

- iptables -t NAT -A PREROUTIMG -p tcp -d 66.187.232.50 -j DNAT
to-destination 192.168.0.10

 DROP.     .

 LOG.       .   -
 ,   ,    syslogd (. 
"syslogd:     "  16).  LOG  
,       . 
     (REJECT)   ,   
LOG,     REJECT,    .

--og-level n

    ,    syslog. conf (.  "syslogd: 
   "  16).

--log-prefix 

         14 .

--log-tcp-options

       TCP.

--log-ip-options

       IP.

 MASQUERADE.   SNAT   --to-source,  IP-
    .     
 IP-,   DHCP,  
 .       POSTROUTING 

NAT.

--to-ports [-]

    .    -
 ,     .      -
 TCP  UDP (--protocol tcp  udp).

768                            V.     