NETGEAR FVS318N Manage the Application Level Gateway for SIP Sessions,  To enable ALG for SIP

ProSafe Wireless-N 8-Port Gigabit VPN Firewall FVS318N

Table 36. Session Limit screen settings (continued)

Setting	Description
User Limit	Enter a number to indicate the user limit. Note the following:
	• If the User Limit Parameter is set to Percentage of Max Sessions, the number
	specifies the maximum number of sessions that are allowed from a single-source
	device as a percentage of the total session connection capacity of the wireless
	VPN firewall. (The session limit is per-device based.)
	• If the User Limit Parameter is set to Number of Sessions, the number specifies
	an absolute value.
	Note: Some protocols such as FTP and RSTP create two sessions per connection,
	which should be considered when you configure a session limit.
Total Number of	This is a nonconfigurable counter that displays the total number of dropped packets
Packets Dropped due
	when the session limit is reached.
to Session Limit
Session Timeout
TCP Timeout	For each protocol, specify a time-out in seconds. A session expires if no data for
	the session is received for the duration of the time-out period. The default time-out
UDP Timeout
	periods are 1800 seconds for TCP sessions, 120 seconds for UDP sessions, and
ICMP Timeout	60 seconds for ICMP sessions.

4.Click Apply to save your settings.

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. SIP support for the ALG, which is an IPv4 feature, is disabled by default.

To enable ALG for SIP:

1. Select Security > Firewall > Advanced. The Advanced screen displays:

Figure 91.

2.Select the Enable SIP ALG check box.

3.Click Apply to save your settings.

Firewall Protection

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