ZyXEL Communications P-334WT Informacje Techniczne Pobierz pdf (Strona 174)

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Configure NAT for Internal Servers

Some tips for this application:

Generally, without IPSec, to configure an internal server for outside access, we need to configure the

server private IP and its service port in SUA/NAT Server Table. The NAT router then will forward the

incoming connections to the internal server according to the service port and private IP entered in SUA/

NAT Server Table.

However, if both NAT and IPSec is enabled in P-334WT, the edit of the table is necessary only if the

connection is a non-secure connections. For secure connections, none SUA server settings are required

since private IP is reachable in the VPN case. Remember, IPSec is an IP-in-IP encapsulation, the internal

IP header is not translated by NAT.

For example:

Internal Server----P-334WT(NAT+IPSec)-----ADSL Modem----Internet----Remote Network

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 294 295

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ZyXEL Communications P-334WT Informacje Techniczne Strona 174

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