Configuration of IP sweep attack defense for the USG2000&5000 series on the web UI

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You can configure IP sweep attack defense for the USG2000&5000 series on the web UI.
1. Choose Firewall > Security Protection > Attack Defense.
2. In the attack defense configuration list, choose Attack Defense Type > Scan.
3. On the Configure Scan Attack Defense page, select Enable corresponding to IP Sweep.
4. Set parameters for IP sweep attack defense.
5. Click Apply.

Other related questions:
Configuration of IP sweep attack defense for the USG2000&5000 series on the CLI
You can configure IP sweep attack defense for the USG2000&5000 series on the CLI. 1. Run the firewall defend ip-sweep enable command to enable IP sweep attack defense. By default, IP sweep attack defense is disabled. 2. Run the firewall defend ip-sweep max-rate max-rate-number command to set the IP sweep maximum connection rate. The default maximum connection rate is 4000 pps. 3. Run the firewall defend ip-sweep blacklist-timeout interval command to set the blacklist aging time. By default, the blacklist aging time is 20 minutes. 4. Run the firewall blacklist enable command to enable the blacklist function. After IP sweep attack defense is enabled, the device checks received TCP, UDP, and ICMP packets. If the number of packets that a source address sends per second to different destination IP addresses exceeds the specified threshold, the USG2000&5000 considers that the source address is initiating an IP sweep attack. It blacklists the IP address and: Discards the packets from the source address if the blacklist function is enabled. Forwards the packets from the source address and generates an alarm if the blacklist function is disabled.

Configuration of IP sweep attack defense for the USG6000 series on the web UI
You can configure port scan attack defense for the USG6000 series on the web UI. 1. Choose Policy > Security Protection > Attack Defense. 2. Click the Single-Packet Attack tab. 3. Select the IP Sweep check box to enable the attack defense function. 4. Set the maximum scanning rate and blacklist aging time. If you enable IP sweep attack defense, enable the blacklist function as well to ensure that the device discards blacklisted packets.

Configuration of SIP flood attack defense for the USG2000&5000 series on the web UI
You can configure SIP flood attack defense for the USG2000&5000 series on the web UI. Configure SIP flood attack defense based on IP addresses. 1. Choose Firewall > Security Protection > Attack Defense. 2. In the attack defense configuration list, choose Attack Defense Type > Application Layer > SIP Flood. 3. On the Configure SIP Flood Attack Defense page, select Enable corresponding to Defense. 4. Set a port range. 5. Click Add. Enter an IP address in the IP Address text box. 6. Click Apply. Configure SIP flood attack defense based on security zones. 1. Choose Firewall > Security Protection > Attack Defense. 2. In the attack defense configuration list, choose Attack Defense Type > Application Layer > SIP Flood. 3. On the Configure SIP Flood Attack Defense page, select Enable corresponding to Defense. 4. Set a port range. 5. Click the (Optional) Based on Security Zones tab. 6. Click Add. Select a security zone from the Security Zone drop-down list. 7. Click Apply.

Configuration of port scan attack defense for the USG2000&5000 series on the web UI
You can configure port scan attack defense for the USG2000&5000 series on the web UI. 1. Choose Firewall > Security Protection > Attack Defense. 2. In the attack defense configuration list, choose Attack Defense Type > Scan. 3. On the Configure Scan Attack Defense page, select Enable corresponding to Port Scan. 4. Set parameters for port scan attack defense. 5. Click Apply.

Configuration of IP sweep attack defense for the USG6000 series on the CLI
You can configure IP sweep attack defense for the USG6000 series on the CLI. 1. Run the firewall defend ip-sweep enable command to enable IP sweep attack defense. By default, IP sweep attack defense is disabled. 2. Run the firewall defend ip-sweep max-rate max-rate-number command to set the IP sweep maximum connection rate. By default, the maximum connection rate is 4000 pps. 3. Run the firewall defend ip-sweep blacklist-timeout interval command to set the blacklist aging time. By default, the blacklist aging time is 20 minutes. 4. Run the firewall blacklist enable command to enable the blacklist function. After IP sweep attack defense is enabled, the device checks received TCP, UDP, and ICMP packets. If the number of packets that a source address sends per second to different destination IP addresses exceeds the specified threshold, the USG6000 considers that the source address is initiating an IP sweep attack. It blacklists the IP address and: Discards the packets from the source address if the blacklist function is enabled. Forwards the packets from the source address and generates an alarm if the blacklist function is disabled.

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