43 • INTERMEDIATE • SYN Flood and TCP Attacks
SYN Cookie Defense
This lesson covers SYN Cookie Defense in the context of SYN Flood and TCP Attacks. Topics include: iptables -A INPUT -p tcp --syn, fail2ban configuration, tshark analysis. Educational and defensive use only.
Code Example
# nginx rate limiting
limit_req_zone $binary_remote_addr zone=one:10m rate=10r/s;
limit_req zone=one burst=20 nodelay;Commands & References
- iptables -A INPUT -p tcp --syn
- fail2ban configuration
- tshark analysis
Lab Steps
- Set up your lab: iptables -A INPUT -p tcp --syn
- Understand the attack or defense mechanism.
- Apply in a controlled environment.
- Document findings.
- Consider mitigation strategies.
Exercises
- Research recent DDoS incidents.
- Design a defense for a sample scenario.
- Review legal implications.
- Practice incident response.