A SYN attack, also known as a Sync flood attack. SYN assaults originated as one of the first classes of distributed denial-of-service (DDoS) attacks, but they currently pose little harm to businesses. For most modern systems, the CERT’s 1996 recommendations still hold true. However, over the past 15 years, the systems have seen significant development. In a SYN attack, the victim computer waits for the attacker to complete the connection after the attacker establishes the initial connection. The attack uses a portion of the TCP three-way handshake to establish trustworthy connections. The victim computer uses resources while the initial connection is active until it runs out of connections or develops other problems.

You have a few ways for defence against sync flood attacks. Standard intrusion detection systems can identify the attacks (IDS). Additionally, it might be limited or restricted by firewalls and other devices’ built-in functions. Lowering timeouts for how long a system must wait for another system could be another additional safeguard. Finish the three-way handshake, or your ISP will stop the attacks.