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Dear Team,<br />
<br />
I want to block UDP port 123 for time sync between my Domain controller and external time server time.windows.com<br />
<br />
Also i want the internal time sync of member with domain controller on tcp port rather than UDP. Is it possible. Can you please help.<br />
<br />
Regards,
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Dear Team,

I want to block UDP port 123 for time sync between my Domain controller and external time server time.windows.com

Also i want the internal time sync of member with domain controller on tcp port rather than UDP. Is it possible. Can you please help.

Regards,

NTP server chaange fromUDP to TCP

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.