Firewall Content Filter Recommended Settings

Use these instructions to configure the firewall settings to control what types of traffic are allowed on your network. The firewall can block certain Web-oriented cookies, java scripts, and pop-up windows. It is highly recommended the Firewall is left enabled at all times to protect against denial of service (DoS) attacks.

Use the Basic option to filter Web content to block certain Web-oriented cookies, java scripts, and pop-up windows as follows:

  1. Login into the device as described in the “How do I log into the modem’s Web User Interface?” FAQ.
  2. Click Firewall from the main menu
  3. Select Content Filter from the left side menu.  Field descriptions are listed below the screen example.

Content Filter Settings

  • Filter Proxy – Acts as an intermediary between a user and the Internet to provide security, administrative control, and caching service.  When a proxy server is located on the WAN, it is possible for LAN users to circumvent content filtering by pointing to this proxy server.
  • Filter Cookies – Stops Cookies from being stored on a connected computer’s hard drive.  Some Web servers use them to track usage and provide service based on an ID found in the Cookies.
  • Filter Java Applets – Stops Java applets from being launched on connected computers.  Java is a programming language and development environment for building downloadable Web components or Internet and intranet business applications.
  • Filter ActiveX – Stops ActiveX applications from being launched on connected computers.  ActiveX is a tool for building dynamic and active Web pages and distributed object applications.  When you visit an ActiveX Web site, ActiveX controls are downloaded to your browser, where they remain in case you visit the site again.
  • Filter Popup Windows – Stops popup windows when visiting some websites.

Firewall Settings

  • Block Fragmented IP Packets – Detects fragmented IP packets and blocks them.
  • Port Scan Detection – Detects port scan attacks.
  • IP Flood Detection – Detects IP flood attacks
  • Firewall Protection – Activates the firewall function.
  • Protection against incoming connection requests on routed subnet – Protects all the routed subnets connected to the device.
  • Apply – Saves the configuration when clicked.