Setting up the WAN
Rev 4 May.17
31
5.5 Setting up Firewall Rules
5.5.1 Configuring the WAN Rule Firewall
Settings
WAN firewall settings are configured through the creation of WAN networking
rules under the WAN > Networking Rules tab.
The oMG's WAN firewall can deny/allow access to both incoming and outgoing
traffic based on a source/destination IP address combination and on TCP, UDP, or
both protocols. The firewall also allows for port forwarding so that services within
the oMG's LAN may be accessible over the WAN.
To define firewall rules on the oMG:
1.
Navigate to
WAN > Networking Rules
.
2.
Select Accessing Blocking, Accessing Granting, or Portforwarding in the rule
dropdown and click Add New Networking Rule.
3.
Enter a descriptive name for the rule.
4.
Set the desired traffic direction in the
Direction
field to allow/deny access or to
port forward on.
5.
Configure the remaining fields and click
Save
. See
page 65 for more information about the specific configuration fields for each
rule type.
Note: Both Access Blocking and Access Granting rules may be created to implement very
specific access policies. Multiple rules of each type may also be created.
5.5.2 Deleting WAN Rules
To delete a WAN network rule:
1.
Navigate to
WAN > Networking Rules
.
2.
Locate the desired networking rule to delete and click
Delete
in the
Actions
column.
3.
Confirm the deletion when prompted by clicking
OK
.
5.5.3 Recovering from Dead WAN Connections
The oMG can be configured to reboot the entire unit after WAN connectivity has
been down for a certain amount of time. This type of recovery is used when a "low
level" communications problem has occurred such as the loss of cellular
coverage. In such a case the "high level" monitoring provided by a WAN Monitor
(described in
Maintaining Communications with Services of a WAN
will not be sufficient since monitors deal with problems like trying to access a
remote server that has gone down. Therefore it's important that WAN recovery be
enabled as described below.