Detections
Analytics

4.5.3 Ensure clean_partial_conns is enabled

Information

The clean_partial_conns parameter determines whether or not the system is open to SYN attacks. This parameter, when enabled, clears down connections in the SYN RECEIVED state after a set period of time. This attempts to stop DoS attacks when a hacker may flood a system with SYN flag set packets.

The clean_partial_conns parameter will be set to 1, to clear down pending SYN received connections after a set period of time.

Solution

Run the following command to set the clean_partial_conns entry:

no -p -o clean_partial_conns=1

See Also

https://workbench.cisecurity.org/benchmarks/22751

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6, 800-53|CM-7, CSCv7|9.2

Plugin: Unix

Control ID: 3bfdeabdcc9f635a7d9347c771e1e029063a43775c4abfe0e6c34ac7cccc0ea9