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Kaspersky Network Attack Blocker is a critical component of Kaspersky Internet Security, designed to safeguard your computer against various forms of network attacks. These attacks are attempts by cybercriminals to infiltrate your system, disrupt its operations, or steal sensitive information. By monitoring and blocking malicious network activities, Network Attack Blocker helps maintain the integrity and security of your operating system.

Network Attack Blocker

Real-Time Protection Against Cyber Threats

Defend your digital infrastructure with our advanced Network Attack Blocker. It monitors your network 24/7, detects suspicious activity, and blocks malicious attacks in real time—before they can cause harm.

• Stops DDoS, brute-force, and port-scanning attacks

• Protects against known and emerging threats

• Works silently in the background without slowing your system

• Easy to integrate, monitor, and manage

• Keeps your servers, websites, and data safe

Stay secure. Stay online. Stay protected.

Understanding Network Attacks

Network attacks encompass a range of malicious activities aimed at compromising computer systems. They can be initiated directly by attackers or through malware installed on the victim’s machine. Common types of network attacks include:

• Port Scanning: Attackers scan UDP/TCP ports to identify open ports and services on a target system. This reconnaissance helps them determine vulnerabilities and plan subsequent attacks.

• Denial of Service (DoS) Attacks: These attacks overwhelm a system with excessive traffic or specially crafted packets, causing it to become unstable or unresponsive. DoS attacks can be categorized into:

  • Malformed Packet Attacks: Sending unexpected or malformed packets that the target system cannot handle, leading to crashes.

  • Traffic Flooding: Overloading the system with a high volume of packets, consuming resources and rendering the system inoperative.Kaspersky Support

• Network Intrusion Attacks: The most severe form, where attackers gain unauthorized access to the system, potentially taking full control. This access can be used to steal confidential data or use the compromised system for further attacks.

How Network Attack Blocker Protects Your System

Kaspersky’s Network Attack Blocker actively monitors network traffic for signs of malicious activity. Upon detecting a threat, it takes immediate action to prevent potential damage:

• Automatic Blocking: The IP address associated with the detected attack is automatically added to a blocked list, preventing further communication.

• Trusted Networks: You can manage a list of trusted IP addresses. If a trusted IP exhibits suspicious behavior, you can choose to unblock it or add it to the trusted list to prevent future blocks.

• Manual Control: Users have the flexibility to review and manage both blocked and trusted IP addresses, ensuring that legitimate connections are not inadvertently blocked.

Managing Network Attack Blocker Settings

To enable or disable the Network Attack Blocker:

1. Click the Kaspersky application icon in the menu bar.

2. Select Preferences from the dropdown menu.

3. Navigate to the Protection tab.

4. In the Network Attack Blocker section, check or uncheck the Enable Network Attack Blocker option.

Note: If you disable the Network Attack Blocker, it will remain disabled even after restarting your system or the Kaspersky application. You must manually re-enable it to restore protection.

Editing Blocked and Trusted IP Lists

To manage blocked IP addresses:

1. Access Preferences via the Kaspersky application icon.

2. Go to the Protection tab and ensure the Network Attack Blocker is enabled.

3. Click the Exclusions button.

4. In the window that appears, select the Blocked computers tab.

5. Choose the IP address you wish to unblock and click Unblock.

6. To prevent future blocks, click Unblock and Exclude, adding the IP to the trusted list.

7. Click Save to apply changes.

To manage trusted IP addresses:

1. Follow steps 1-3 above.

2. In the Trusted computers tab, add or remove IP addresses as needed.

3. Click Save to confirm your changes.

Importance of Keeping Network Attack Blocker Enabled

Disabling the Network Attack Blocker exposes your system to potential threats, increasing the risk of unauthorized access, data theft, and system instability. Kaspersky strongly advises keeping this feature enabled to maintain optimal security. The Protection Center will notify you if the Network Attack Blocker or other protection components are disabled, ensuring you’re aware of any vulnerabilities.

For more detailed information and support, visit the official Kaspersky support page:
Kaspersky Network Attack Blocker Support

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