Does the firewall function of an AR router need a license

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The firewall function of an AR router does not need a license.

Other related questions:
Does the deep security defense function of an AR router need a license
Whether the deep security defense function of an AR router needs a license is subject to the router model and software version. For details, see the product manuals of corresponding software versions. For example, for a router with the V200R007 software, choose IPS Configuration > Configuration Notes and URL Filtering Configuration > Configuration Notes in the Security Configuration Guide > Deep Security Defense Configuration through the URL: AR100&AR120&AR150&AR160&AR200&AR1200& AR1600&AR2200&AR3200&AR3600 V200R007 Product Documentation.

Does an AR router support the firewall function
All AR series routers support the firewall function.

Does the firewall need to be open for the E1 line of AR routers
The E1 line of AR routers can be seen as an external line or dedicated line. You can configure the firewall based on actual requirements.

Configure the basic firewall functions on an AR router
The basic firewall functions of an AR router include: creating a security zone and adding interfaces into the security zone, creating an interzone and enabling the firewall functions in the interzone, configuring session table aging time, and checking the configuration result. For details about the configuration, see the following content: [Creating a security zone and adding interfaces into the security zone on an AR router] Create a security zone and add interfaces into the security zone on an AR router. [Enabling the firewall functions on an AR router] Enable the firewall functions on an AR router. [Configuring session table aging time of the firewall on an AR router] Configure session table aging time of the firewall on an AR router. For details about configuration of basic firewall functions on AR series routers, see the URL: AR router configuration firewall basic functions.

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