1. Use rate limiting on network infrastructure: Rate limiting is a simple task that can be performed at the network level, such as using firewalls or routers to throttle incoming network traffic. Rate limiting allows a network administrator to control how much data can be sent by a single source, and can prevent large numbers of data packets from overwhelming a system.

2. Implement IP address spoofing protection: Network administrators can implement IP address spoofing protection on their systems, which is a method of making sure that the IP address of an incoming packet matches that of its intended recipient. This prevents attackers from sending SYN flood attacks from spoofed IP addresses.

3. Enforce SYN cookies for TCP connections: SYN cookies are a process whereby the server’s response to a SYN request includes a cookie which the client must use in subsequent messages. This prevents attackers from sending multiple SYN requests from spoofed IP addresses as each packet requires a unique cookie.

4. Utilize intrusion detection systems (IDS): Intrusion detection systems monitor for unusual activity on a network such as an abnormally high number of SYN requests or a large amount of data being sent from a single source. When these types of activities are detected, they can alert a network administrator who can then take steps to stop the attack.

5. Install anti–DDoS software: Anti–DDoS software can be installed on a server or a network infrastructure to detect and react to Denial of Service type attacks such as SYN floods. This commercial off–the–shelf software will recognize these attacks and respond quickly to mitigate any damage.

1. Use static IP addresses to assign critical and confidential hosts on the network.

2. Configure DHCP servers to limit the number of leases that can be issued to a single host.

3. Use DHCP Snooping to block malicious attempts by limiting the information that an attacker can access.

4. Implement MAC address filtering on the router to help filter out malicious DHCP requests.

5. Reduce the lease time on DHCP servers to reduce the window of opportunity for attackers to take advantage of the system.

6. You can also use Access Control Lists (ACLs) to restrict access to DHCP servers and services.

7. Implement strong authentication methods such as passwords or certificates to ensure only authorized users can access the server.

8. Monitor DHCP logs regularly to detect any suspicious activities.

1. Power Down Your Network To ensure your router is properly set up, it is important to make sure all of your equipment is powered down before beginning.

2. Connect Your Routers Together Connect two of the routers together using an Ethernet cable. Connect the Ethernet port from one router to any of the LAN ports on the other router.

3. Log Into Your Primary Router Open the web browser on your computer and type in the IP address for your primary router. This can typically be found on the router itself or in its user manual. Log in with the username and password for your router.

4. Set Up Second Router As Access Point Once logged into your primary router find the settings for accessing the second router. Here you can set the second router up as an access point. This will allow devices connected to both routers to communicate freely.

5. Reboot Your Network Once you have finished setting up the second router, power up all of your network equipment. Your network should now be able to access the internet through both of your routers.