Switch Security 6 - 57
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 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.
Type
Displays the NAT type as either:
•
Inside
- Applies NAT on packets arriving on interfaces marked as inside. These interfaces
should be private networks 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 accessible from anywhere on the Internet.
Direction
Displays the direction as either:
•
Source
- The inside network is transmitting data over the network to 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 the records kept by the NAT engine. The destination IP address is changed
back to the specific internal private class IP address 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 the Standard IP and Extended IP Access List can be used.
Interface
Defines the interface through which packets are 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.
NAT Address
This is the IP address used during NAT. The users can configure this address.
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