46 • INTERMEDIATE • SYN Flood and TCP Attacks
Linux Kernel Parameters
This lesson covers Linux Kernel Parameters in the context of SYN Flood and TCP Attacks. Topics include: tcpdump port 53, NetFlow export, sysctl net.ipv4.tcp_max_syn_backlog. Educational and defensive use only.
Code Example
# Wireshark filter
tcp.flags.syn==1 and tcp.flags.ack==0
# SYN packets onlyCommands & References
- tcpdump port 53
- NetFlow export
- sysctl net.ipv4.tcp_max_syn_backlog
Lab Steps
- Set up your lab: tcpdump port 53
- 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.