Enabling Session Initiation Protocol Application-Level Gateway; Configuring The Default Outbound Policy - Cisco Small Business RV220W Administration Manual

Configuring the Firewall
Configuring Basic Firewall Settings
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STEP 1
STEP 2
STEP 3
Cisco RV220W Administration Guide
Enabling Session Initiation Protocol Application-Level
Gateway
Session Initiation Protocol Application-Level Gateway (SIP ALG) can rewrite
information within SIP messages (SIP headers and SDP body) making signaling
and audio traffic possible between a client behind Network Address Translation
(NAT) and the SIP endpoint.
To enable SIP ALG:
Choose Firewall > Basic Settings > SIP ALG.
Check the Enable box to enable SIP ALG support. If disabled, the router will not
allow incoming calls to the UAC (User Agent Client) behind the Cisco RV220W.
Click Save.

Configuring the Default Outbound Policy

The Firewall Settings page allows the user to configure the default outbound
policy for the traffic that is directed from the secure network (LAN) to the non-
secure network (dedicated WAN/optional). The default inbound policy for traffic
flowing from the non-secure zone to the secure zone is always blocked and
cannot be changed.
To configure the default outbound policy:
Choose Firewall > Access Control > Default Outbound Policy.
In the IPv4 field, select one of the following:
• Always Allow—Always allow traffic from the secure to the non-secure
network.
• Always Block—Always block traffic from the secure to the non-secure
network.
Click Save.
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