A SYN attack is one where an attacker makes an initial connection to a victim computer and the victim computer...
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
waits for the completion of the connection. The attack is exploiting part of the three-way handshake in TCP for establishing reliable connections. When the initial connection is left open, it consumes resources on the victim computer until it runs out of connections or has other issues.
To protect against sync flood attacks, you have several options. The attacks can be detected by standard intrusion detection systems (IDS) and could also be blocked or minimized by built-in features in firewalls and other devices. Further protections could include lowering timeouts for how long a system waits for another system to complete the three-way handshake or having your ISP block the attacks.
Dig Deeper on Denial of Service (DoS) Attack Prevention-Detection and Analysis
Related Q&A from Nick Lewis
USB storage devices can be turned into covert channels with a software tool called USBee. Expert Nick Lewis explains how to protect your enterprise ...continue reading
Passive man-in-the-middle attacks on PIN pads can lead to attackers stealing credit card details. Expert Nick Lewis explains how companies can ...continue reading
The SFG malware dropper can bypass antimalware programs and exploit two patched vulnerabilities. Expert Nick Lewis explains how to these attacks work...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.