Security Gateway Manual
SG-3100
The firewall will assign the next available OPT interface number corresponding to the internal interface designation.
For example, if there are no current OPT interfaces, the new interface will be
OPT1
. The next will be
OPT2
, and so
on.
Note:
As this guide does not know what that number will be on a given configuration, it will refer to the interface
generically as
OPTx
.
The newly assigned interface will have its own entry under the
Interfaces
menu and elsewhere in the GUI.
2.5.3 Interface Configuration
The new interface must be enabled and configured.
• Navigate to
Interfaces > OPTx
• Check
Enable interface
• Set custom name in the
Description
, e.g.
WAN2
• Set IP address and CIDR for static, or DHCP/PPPoE/etc.
See also:
• Create a Gateway if this is a static IP address WAN:
–
Click
Add a New Gateway
–
Configure the gateway as follows:
Default
Check if this new WAN should be the default gateway.
Gateway Name
Name it the same as the interface (e.g.
WAN2
), or a variation thereof.
Gateway IPv4
The IPv4 address of the gateway inside the same subnet.
Description
Optional text describing the purpose of the gateway.
–
Click
Add
–
Ensure the new gateway is selected as the
IPv4 Upstream Gateway
• Check
Block private networks
This will block private network traffic on the interface, though if the firewall rules for this WAN are not permis-
sive, this may be unnecessary.
• Check
Block bogon networks
This will traffic from bogus or unassigned networks on the interface, though if the firewall rules for this WAN
are not permissive, this may be unnecessary.
• Click
Save
• Click
Apply Changes
The presence of a selected gateway in the interface configuration causes the firewall to treat the interface as a WAN
type interface. This is manual for static configurations, as above, but is automatic for dynamic WANs (e.g. DHCP,
PPPoE).
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