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.
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