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Configuring General Firewall Settings

To configure general firewall settings:

  1. In the FIREWALL tab, click Settings for the Basic Firewall category.

    The Basic Firewall panel shows the Current Settings and the History.

  2. Click Advanced Settings.

    The Firewall Settings window opens and shows the Advanced configuration panel.

  3. In the General Settings area, select your security settings:

    Block all fragments

    Blocks all incomplete (fragmented) IP data packets, which hackers sometimes create to bypass or disrupt network devices that read packet headers.

    NOTE: Do not select this option unless you are aware of how your Internet provider handles fragmented packets. If you select this option, the ZoneAlarm Free Antivirus + Firewall security software silently blocks all fragmented packets. It does not send alerts or create log entries.

    Block trusted servers

    Prevents all programs on your computer from acting as servers to the Trusted Zone.

    NOTE: This setting overrides permissions granted through the Program Permissions settings.

    Block public servers

    Prevents all programs on your computer from acting as servers to the Public Zone.

    NOTE: This setting overrides permissions granted through the Program Permissions settings.

    Enable ARP protection

    Blocks all incoming ARP (Address Resolution Protocol) requests, except broadcast requests for the address of the target computer. Also blocks all incoming ARP replies except for those that come in response to outgoing ARP requests.

    Filter IP traffic over 1394

    Filters FireWire traffic. You will need to restart your PC for these filter changes to take effect.

    Allow VPN protocols

    Allows the use of VPN protocols (ESP, AH, GRE, SKIP), even when in High security mode. When this option is disabled, the VPN protocols are allowed only in Medium security mode.

    Allow uncommon protocols at high security

    Allows the use of protocols, other than ESP, AH, GRE, and SKIP, in High security mode.

    Lock hosts file

    Prevents the hosts file on your computer from being modified by hackers through sprayers or Trojan horses. Because some legitimate programs need to modify your hosts file in order to function, this option is turned off by default.

    Disable Windows Firewall

    Detects and disables Windows Firewall.

  4. Click OK to save the configuration changes and exit, or continue to Network settings.

    Note - To return to the default settings, click Reset to default before you click OK.

 
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