Technical information

Watson-SHDSL-Router-GUI-Manual.doc
Version 2.3-03
Watson SHDSL Router
Web-based Management Manual
Revision: 2012-02-29
8-27
outbound traffic respectively. Note that Watson is automatically configured with
ALG rules for several widespread protocols. You can edit a rule by clicking its re-
spective action icon, or remove it by clicking the action icon .
To create an ALG rule, either inbound or outbound, click the 'New Entry' link that
corresponds to the rule type you would like to define. The 'Add ALG Rule' screen
appears.
Figure 8-32: Add ALG Rule
The 'Matching' and 'Operation' sections of this screen define the operation to be
executed when matching conditions apply.
Matching Use this section to define characteristics of the packets matching the
rule.
 Source Address The source address of packets sent or received by
Watson. Use this drop-down menu to specify the computer or group of com-
puters on which you would like to apply the rule. Select an address or a name
from the list to apply the rule on the corresponding host, or 'Any' to apply the
rule on any host trying to send data. If you would like to add a new address, se-
lect the 'User Defined' option in the drop-down menu. This will commence a
sequence that will add a new Network Object, representing the new host. Refer
to Section 9.9.2 in order to learn how to do so.
 Destination Address The destination address of packets sent or received by
Watson. This address can be configured in the same manner as the source
address. For example, use this drop-down menu to specify an IP address of a
remote application server (such as a security server), which requires that the
incoming packets have a specific IP address (e.g., one of those defined in your
NAT IP address pool).
 Protocol You may also specify a traffic protocol. Selecting the 'Show All
Services' option from the drop-down menu expands the list of available proto-
cols. Select a protocol or add a new one using the 'User Defined' option. This