IPv6 TCP data retransmissions must be configured to prevent resources from becoming exhausted.

From Windows 8 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-48433r1_rule IPv6 TCP data retransmissions must be configured to prevent resources from becoming exhausted.

Vulnerability discussion

Configuring Windows to limit the number of times that IPv6 TCP retransmits unacknowledged data segments before aborting the attempt helps prevent resources from becoming exhausted.

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Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (TcpMaxDataRetransmissions IPv6) How many times unacknowledged data is retransmitted (3 recommended, 5 is the default)" to "3" or less.

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