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Watson SHDSL Router

Web-based Management Manual

Watson-SHDSL-Router-GUI-Manual.doc

Version 2.3-03

8-22

Revision: 2012-02-29

STEP 5 Translate the address 192.168.1.6 to 192.168.71.16 ports 1024-1100. De-

fine this NAPT rule in the same manner depicted above. The rule will be displayed

in the 'NAT' screen:

Figure 8-27: NAT/NAPT Rule Sets

This rule translates a LAN IP address to a NAT IP address with ports 1024-1100.

However, only ports 1051-1100 will be used for this LAN computer, as ports 1024-

1050 are already in use by the preceding rule. The status is set to "Active".

Every new NAT/NAPT rule is verified in relation to preceding rules. Rules are priori-

tized according to the order in which they are defined. As long as at least one un-

used IP address (or port) is available, the rule will be accepted. However, as seen

in the examples above, not all addresses in the range defined may be available for

computers in that rule; some may already be in use by other rules. Watson auto-

matically calculates the relationships between rules, narrowing down the address

ranges if needed, and thus provides placability for user input. The verification per-

formed by Watson is as follows:

NAT rule:

 Verifies whether the IP address is already in use by another NAT/NAPT rule.

NAPT rule:

 Verifies whether the port is already in use by another NAPT rule activated on

the same IP address.

 Verifies whether the IP address is already in use by another NAT rule.

8.2.8 Connections

The connection list displays all the connections that are currently open, as well as

various details and statistics. You can use this list to close an undesired connection

by clicking its action icon . The basic display includes the name of the protocol,

the different ports it uses, and the direction in which the connection was initiated.

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Schmid Watson Technical Information Page 68