![]() ![]() Although a shorter key lifetime results in better security, it also reduces performance because of the more frequent renegotiating of the quick mode SA. Be careful to balance performance with security requirements. After this number is reached, the quick mode SA must be renegotiated. In Key lifetime (in sessions), type the number of times that the quick mode session can be rekeyed. We also recommend that you use ESP instead of AH if you have any devices on your network that use network address translation (NAT). It is included for backward compatibility only. We recommend that you do not include MD5 in any combination. If the data integrity algorithms displayed in the list are not what you want, then do the following:įrom the left column, remove any of the data integrity algorithms that you do not want by selecting the algorithm and then clicking Remove.Īdd any required data integrity algorithms by clicking Add, selecting the appropriate protocol (ESP or AH) and algorithm (SHA1 or MD5), selecting the key lifetime in minutes or sessions, and then clicking OK. If you did not select Require encryption, then select the data integrity algorithms that you want to use to help protect the data sessions between the two computers. We recommend that you use this setting only on network traffic that truly requires it, such as to and from computers in the encryption zone. Before selecting this option, consider the performance impact and the increase in network traffic that will result. If you do not select this option, then you can use only data integrity algorithms. Selecting this option disables the Data integrity section, and forces you to select only integrity algorithms that are combined with an encryption algorithm. If you require encryption for all network traffic in the specified zone, then check Require encryption for all connection security rules that use these settings. In the Data protection (Quick Mode) section, click Advanced, and then click Customize. On the IPsec Settings tab, click Customize. In the details pane on the main Windows Defender Firewall with Advanced Security page, click Windows Defender Firewall Properties. Open the Group Policy Management Console to Windows Defender Firewall with Advanced Security. To complete these procedures, you must be a member of the Domain Administrators group, or otherwise be delegated permissions to modify the GPOs. This procedure shows you how to configure the data protection (quick mode) settings for connection security rules in an isolated domain or a standalone isolated server zone. ![]()
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