The system must limit how many times unacknowledged TCP data is retransmitted.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-4438 | 5.098 | SV-32359r2_rule | Low |
| Description |
|---|
| In a SYN flood attack, the attacker sends a continuous stream of SYN packets to a server, and the server leaves the half-open connections open until it is overwhelmed and no longer able to respond to legitimate requests. |
| STIG | Date |
|---|---|
| Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide | 2017-04-28 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-66935r1_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (TcpMaxDataRetransmissions) How many times unacknowledged data is retransmitted (3 recommended, 5 is default)" to "3" or less. |