Security Gateway Manual SG-2100
Destination Any
Translation Address Interface Address
Description Text describing the rule, e.g. Guest LAN outbound on WAN
• Click Save
• Click Apply Changes
Alternately, clone existing NAT rules and adjust as needed to match the new LAN.
12.6 Firewall Rules
By default there are no rules on the new interface, so the firewall will block all traffic. This is not ideal for a LAN as
generally speaking, the LAN clients will need to contact hosts through the firewall.
Rules for this interface can be found under Firewall > Rules, on the OPTx tab (or the custom name, e.g. GUESTS).
There are two common scenarios administrators typically choose for local interfaces: Open and Isolated
12.6.1 Open
On an open LAN, hosts in that LAN are free to contact any other host through the firewall. This might be a host on
the Internet, across a VPN, or on another local LAN.
In this case a simple “allow all” style rule for the interface will suffice.
• Navigate to Firewall > Rules, on the OPTx tab (or the custom name)
• Click to add a new rule at the top of the list
• Configure the rule as follows:
Action Pass
Interface OPTx (or the custom name) should already be set by default
Protocol Any
Source OPTx Net (or the custom name)
Destination Any
Description Text describing the rule, e.g. Default allow all from OTPx
• Click Save
• Click Apply Changes
• Add rule to pass any protocol from interface net to any destination
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