Specifications
Firewall Protection
174
ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
4. Click Apply to save your settings.
Configure Multicast Pass-Through for IPv4 Traffic
IP multicast pass-through allows multicast packets that originate in the WAN, such as packets
from a media streaming or gaming application, to be forwarded to the LAN subnet. Internet
Group Management Protocol (IGMP) is used to support multicast between IP hosts and their
adjacent neighbors.
To configure multicast pass-through:
1. Select Security > Firewall > IGMP. The IGMP screen displays. (The following figure
shows one alternate network as an example.)
User Limit Parameter From the User Limit Parameter drop-down list, select one of the following options:
• Percentage of Max Sessions. A percentage of the total session connection
capacity of the VPN firewall.
• Number of Sessions. An
absolute
number of maximum sessions.
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 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 you should consider when you configure a session limit.
T
otal 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 T
imeout
TCP Timeout For each protocol, specify a time-out in seconds. A session expires if no data for
the session is received during the time-out period. The default time-out periods are
3600 seconds for TCP sessions, 180 seconds for UDP sessions, and 120 seconds
for ICMP sessions.
UDP Timeout
ICMP Timeout
Table 36. Session Limit screen settings (continued)
Setting Description