Chapter 25 Firewall
UAG5100 User’s Guide
249
Figure 171
Configuration > Firewall
The following table describes the labels in this screen.
Table 109
Configuration > Firewall
LABEL
DESCRIPTION
General Settings
Enable Firewall
Select this check box to activate the firewall. The UAG performs access control when the
firewall is activated.
IPv4 Rule
Summary
Allow
Asymmetrical
Route
If an alternate gateway on the LAN has an IP address in the same subnet as the UAG’s LAN
IP address, return traffic may not go through the UAG. This is called an asymmetrical or
“triangle” route. This causes the UAG to reset the connection, as the connection has not
been acknowledged.
Select this check box to have the UAG permit the use of asymmetrical route topology on
the network (not reset the connection).
Note: Allowing asymmetrical routes may let traffic from the WAN go directly to the LAN
without passing through the UAG. A better solution is to use virtual interfaces to put the
UAG and the backup gateway on separate subnets.
