Motorola Series Switch WS5100 - Manual (Page 256)

6-32 WS5100 Series Switch System Reference Guide
3. Refer to the following information as displayed within the Static 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.
6. Click the Add button to display screen to create a new NAT configuration and add it to the list of available
configurations. For more information, see Adding a New Dynamic NAT Configuration on page 6-30 .
6.6.2.1 Adding a New Static NAT Configuration
If the existing NAT configurations displayed with the Configuration prove unsuitable for translation, consider
creating a new one.
To define a new NAT configuration:
1. Select Security > NAT from the main menu tree.
2. Click on the Static Translation tab.
Type Displays the NAT type as either:
• Inside - The set of networks that are subject to translation. These are the internal
addresses you are trying to prevent from being exposed to the outside world.
• Outside - All other addresses. Usually these are valid addresses located on the Internet.
Outside addresses pose no risk if exposed over a publicly accessible network.
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.
Protocol Displays the tcp or udp option selected for use with the static translation.
Local Address Displays the Local Address used at the local (source) end of the static NAT configuration.
This address (once translated) will not be exposed to the outside world when the translation
address is used to interact with the remote destination.
Local Port Applies NAT on packets matching the specified port number. The port number matched can
be either source or destination based on the direction specified. This option is valid only if
the direction specified is
destination .
Global Address Modifies the IP address of the matching packet to the specified value. The IP address to be
modified can be either source or destination based on the direction specified.
Global Port Modifies the port number of the matching packet to the specified value. This option is valid
only if the direction specified is
destination.