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Motorola Series Switch WS5100 User Manual

Page 253

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Switch Security

6-29

3. Refer to the following information as displayed within the

Dynamic Translation

tab.

4. Select an existing NAT configuration and click the

Edit

button to display screen used to modify the

settings of this existing NAT configuration. The fields within the Edit screen are similar to those displayed
when adding a new NAT configuration.

5. Select an existing NAT configuration and click the

Delete

button to remove it from the list of available

configurations displayed.

Type

Displays the NAT type as either:

• Inside - Applies NAT on packets coming in on interfaces marked as inside. These switch

interfaces should be private networks which are not accessible from outside (public)
networks.

• Outside - Applies NAT on packets coming in on interfaces marked as outside. These

switch interfaces should be public or outside networks which are accessible from
anywhere on the Internet.

Direction

Displays the Direction as either:

• Source - The inside network is transmitting data over the network its intended

destination. On the way out, the source IP address is changed in the header and replaced
by the (public) IP address.

• Destination - Packets passing through the NAT on the way back to the switch managed

LAN are searched against to the records kept by the NAT engine. There the destination IP
address is changed back to the specific internal private class IP address in order to reach
the LAN over the switch managed network.

Access List

Defines the packet selection criteria for NAT. NAT is applied only on packets which match a
rule defined in the access-list. Only Standard IP and Extended IP Access List can be used.

Interface

Defines the interface through which packets get routed. The source IP address and source
port number (only if IP protocol is TCP or UDP) of packets is changed to the interface IP
address and a random port number.