SYN Flood

SYN Flood Attack

Identifying SYN flood attacks is a critical component in protecting network infrastructures from a common and disruptive type of Denial-of-Service (DoS) attack. In a SYN flood attack, an attacker exploits the TCP connection establishment process by rapidly sending SYN (synchronization) packets to a target's network port, but then either not responding to the server's SYN-ACK response or sending the responses very slowly. This can overwhelm the server, leading to resource exhaustion and preventing legitimate users from establishing connections. Given the severity of these attacks, which can incapacitate web servers, mail servers, and other network resources, it's vital to detect them early. Quick identification allows for timely intervention to mitigate the attack and maintain service availability, ensuring network stability and user access.

ElastiFlow provides a collection of anomaly detection jobs designed to identify SYN flood attacks including various techniques and tools for analyzing network traffic and identifying the hallmarks of such attacks.

Attributes

Attribute	Information
Analysis Type	population
MITRE ATT&CK Technique	Network Denial of Service (T1498)
MITRE ATT&CK Sub-Technique	Direct Network Flood (T1498.001)
MITRE ATT&CK Tactic	Impact (TA0040)

Downloads

Schema	Vector	Perspective	Link
CODEX	direct	edge	elastiflow_codex_netsec_syn_flood_direct_edge
CODEX	direct	inbound	elastiflow_codex_netsec_syn_flood_direct_in
CODEX	direct	outbound	elastiflow_codex_netsec_syn_flood_direct_out
CODEX	direct	private	elastiflow_codex_netsec_syn_flood_direct_priv
CODEX	distributed	edge	elastiflow_codex_netsec_syn_flood_ddos_edge
CODEX	distributed	inbound	elastiflow_codex_netsec_syn_flood_ddos_in
CODEX	distributed	outbound	elastiflow_codex_netsec_syn_flood_ddos_out
CODEX	distributed	private	elastiflow_codex_netsec_syn_flood_ddos_priv
ECS	direct	edge	elastiflow_ecs_netsec_syn_flood_direct_edge
ECS	direct	inbound	elastiflow_ecs_netsec_syn_flood_direct_in
ECS	direct	outbound	elastiflow_ecs_netsec_syn_flood_direct_out
ECS	direct	private	elastiflow_ecs_netsec_syn_flood_direct_priv
ECS	distributed	edge	elastiflow_ecs_netsec_syn_flood_ddos_edge
ECS	distributed	inbound	elastiflow_ecs_netsec_syn_flood_ddos_in
ECS	distributed	outbound	elastiflow_ecs_netsec_syn_flood_ddos_out
ECS	distributed	private	elastiflow_ecs_netsec_syn_flood_ddos_priv

By implementing this suite of anomaly detection jobs, network administrators can rapidly detect and respond to SYN flood attacks. This proactive approach is essential for minimizing the impact of such attacks, ensuring that network services remain available and reliable, and maintaining the overall health of the network infrastructure.