Auditing Kerberos service ticket operations is important for detecting hackers trying to use Kerberos as an attack vector. The default value of this configuration is to audit only successful events. This may eventually result in missing an attack or not having enough information to investigate it.

This video will discuss the recommended setting for Symbolic Links in your servers, since as much as they are useful, Symbolic Links can also be used maliciously to gain access and control in your network.

This policy specifies whether to prevent the redirection of data to client LPT ports during a Remote Desktop Services session. You can use this setting to prevent users from mapping local LPT ports and redirecting data from the remote computer to local LPT port peripherals. If a value is configured to Disabled or Not Configured, the attacker can leverage it to map the client’s LPT ports. In addition, he can use the port to redirect data from the Terminal Server to the local LTP ports.

Do Not Allow COM Port Redirection will determine whether the redirection of data to client COM ports from the remote computer will be allowed in the RDS session. By default, RDS allows COM port redirection. It can be used, for example, to use a USB dongle in an RDS session.

Maximum log size should be set to any kind of event logs, as part of your security policy. This configuration’s value is highly important for detecting attacks and investigating their source. Allocating insufficient storage space will lead to information loss of what happened in the network, therefore breaches could remain undetected.

NTLM is Microsoft’s old mythological authentication protocol. Although new and better authentication protocol has already been developed, NTLM is still very much in use. NTLM protocol has proven to have many flaws that result in potential vulnerabilities. One caution measure that can be taken is auditing and logging any NTLM traffic events.

Specifies whether to prevent the sharing of clipboard contents (clipboard redirection) between a remote computer and a client computer during a Remote Desktop Services session. By default, Remote Desktop Services allows clipboard redirection. If the status is set to Enabled, users cannot redirect clipboard data.

This policy setting allows you to specify whether to require user authentication for remote connections to the RD Session Host server by using Network Level Authentication (NLA). This policy setting enhances security by requiring that user authentication occur earlier in the remote connection process. If you enable this policy setting, only client computers that support Network Level Authentication can connect to the RD Session Host server.

LAN Manager (LM) is a family of early Microsoft client/server software that allows users to link personal computers together on a single network. Network capabilities include transparent file and print sharing, user security features, and network administration tools. In Active Directory if the Kerberos protocol is not negotiated for some reason, Active Directory will use LM, NTLM, or NTLMv2.