Manage The Application Level Gateway For Sip Sessions; Create Services, Qos Profiles, And Bandwidth Profiles - NETGEAR SRX5308 Reference Manual

Manage the Application Level Gateway for SIP Sessions

The application level gateway (ALG) facilitates multimedia sessions such as voice over IP
(VoIP) sessions that use the Session Initiation Protocol (SIP) across the firewall and provides
support for multiple SIP clients. ALG support for SIP is disabled by default.

To enable ALG for SIP:
1. Select Security > Firewall > Advanced. The Advanced screen displays:
Figure 58.
2. Select the Enable SIP ALG check box.
3. Click Apply to save your settings.

Create Services, QoS Profiles, and Bandwidth Profiles

When you create inbound and outbound firewall rules, you use firewall objects such as
services, QoS profiles, bandwidth profiles, and schedules to narrow down the firewall rules:
• Services. A service narrows down the firewall rule to an application and a port number.
For information about adding services and IP groups, see
page 113 and Create IP Groups
• QoS profiles. A Quality of Service (QoS) profile defines the relative priority of an IP
packet for traffic that matches the firewall rule. For information about creating QoS
profiles, see Create Quality of Service (QoS) Profiles
• Bandwidth profiles. A bandwidth profile allocates and limits traffic bandwidth for the LAN
users to which a firewall rule is applied. For information about creating bandwidth profiles,
see Create Bandwidth Profiles
Note: A schedule narrows down the period during which a firewall rule is
applied. For information about specifying schedules, see
Schedule to Block or Allow Specific Traffic
ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308
on page 115.
on page 119.
Firewall Protection
Add Customized Services
on page 117.
on page 122.
112
on
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