Cisco Small Business RV220W, Administration Manual, Page: 93 / 228

Firewall
Advanced Firewall Settings
Cisco RV220W Administration Guide 93
4
STEP 2
In the Allowed Networks Table , perform these tasks:
• To add a network, click Add . Then enter the settings on the Add/Edit
Networks page. See Adding or Editing the Allowed Networks, page 93 .
• To edit a network, check the box and then click Edit . Then enter the settings
on the Add/Edit Networks page. See Adding or Editing the Allowed
Networks, page 93 .
• To delete a network, check the box and then click Delete . To select all
networks, check the box in the heading row, and then click Delete . When the
confirmation message appears, click OK to continue with the deletion, or
otherwise click Cancel .
Adding or Editing the Allowed Networks
Use the Add/Edit Networks page to specify the allowed networks for IGMP
communications.
To open this page: From the Firewall > Advanced Settings > IGMP Configuration
page, click Add or select a network and then click Edit .
STEP 1
Enter these settings:
• Network Address— Enter the IP address of the network.
• Mask Length— Enter the number of masked bits, as in CIDR slash notation.
Valid values are from 0 to 32.
STEP 2
Click Save to save your settings, or click Cancel to reload the page with the
current settings. Click Back to return to the Firewall > Advanced Settings > IGMP
Configuration page.
SIP ALG
Session Initiation Protocol Application-Level Gateway (SIP ALG) can rewrite
information within SIP messages (SIP headers and SDP body) to allow signaling
and audio traffic between a client on your private network and a SIP endpoint.
To open this page: In the navigation tree, choose Firewall > Advanced Settings >
SIP ALG .