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Adjust IDS options to prevent router conflicts (Business Edition 4.x) - Kennisbank / Endpoint Solutions - ESET Tech Center

Adjust IDS options to prevent router conflicts (Business Edition 4.x)

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Many of the issues you might be experiencing with your ESET product have been resolved in the latest version. We highly recommend that you upgrade to the latest version:


Occasionally after installing ESET Smart Security, the false-positive detection of certain system processes can cause a temporary loss of Internet connectivity. Please follow the steps below to configure your ESET Smart Security Personal firewall to prevent the false-positive detections and restore your internet connection:


  1. Open ESET Smart Security. How do I open my ESET product?
  2. Press the F5 key to display the Advanced Setup window.
  3. From the Advanced Setup tree on the left, click Personal firewall → IDS and advanced options.
  4. In the Intrusion detection section, deselect the following options:

              ESET Smart Security 4.0 and 3.0:

    ESET Smart Security 3.0 only:

    • ARP Poisoning attack detection
    • DNS Poisoning attack detection
    • TCP Desynchronization attack detection
    • Reverse TCP Desynchronization attack detection



    These attacks occur between the client and DNS/ARP authority and are not a risk for users with a NAT device. Deslecting the above options will not pose a risk to users with a router, Wi-Fi, or other local NAT device. Users who do not have a NAT device should use ESET NOD32 Antivirus instead and use the built-in Windows Firewall.


    Figure 1-1

  5. Click OK to confirm the changes and return to the main program window.

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