Filter
Top Products
Firewall Protection
171
ProSafe Wireless-N 8-Port Gigabit VPN Firewall FVS318N
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 Se
curity > Firewall > Advanced. The Advanced screen displays:
Figure 91.
2. Select the Enable SIP ALG check box.
3. Click App
ly to save your settings.
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
spe
cifies 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 N
umber of Sessions, the number specifies
an absolute value.
Note: Some protocols such as FTP and RSTP crea
te two sessions per connection,
which should be considered when you configure a session limit.
Total Number of
Packets Dropped due
to Session Limit
This is a nonconfigurable counter that displays the total number of dropped packets
when the session limit is reached.
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
periods are 1800 seconds for TCP sessions, 120 seconds for UDP sessions, and
60 seconds for ICMP sessions.
UDP Timeout
ICMP Timeout
Table 36. Session Limit screen settings (continued)
Setting Description