What ports does Active Directory use?
What ports does Active Directory use?
AD uses the following ports to support user and computer authentication, according to the Active Directory and Active Directory Domain Services Port Requirements article:
- SMB over IP (Microsoft-DS): port 445 TCP, UDP.
- Kerberos: port 88 TCP, UDP.
- LDAP: port 389 UDP.
- DNS: port 53 TCP, UDP.
What protocols does Active Directory use?
Active Directory is a directory server that uses the LDAP protocol.
What ports are required for Active Directory replication?
More Info:
| Port | Use |
|---|---|
| 88 | Kerberos |
| 135 | TCP for RPC, EPM (Replication) |
| 389 | TCP, UDP for LDAP (Directory, Replication, User and Computer Authentication, Group Policy, Trusts) |
| 445 | TCP, UDP for SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc (Replication, User and Computer Authentication, Group Policy, Trusts) |
What port does Netlogon use?
At a glance:
| ID | 25960 |
|---|---|
| Deprecated | No |
| Technology | Client-Server |
| Behavior | Reasonable |
| Default Ports | TCP/135 TCP/139 TCP/445 TCP/1024-5000 TCP/49152-65535 UDP/137 UDP/138 UDP/445 |
Is SMB required for Active Directory?
At least there SMB (used by shares and share access by clients) is indispensable. In a Active Directory environment at least domain controllers definitely need administrative shares …
What protocol is SMB?
The Server Message Block (SMB) Protocol is a network file sharing protocol, and as implemented in Microsoft Windows is known as Microsoft SMB Protocol. The set of message packets that defines a particular version of the protocol is called a dialect. The Common Internet File System (CIFS) Protocol is a dialect of SMB.
What is difference between Kerberos and LDAP?
LDAP and Kerberos together make for a great combination. Kerberos is used to manage credentials securely (authentication) while LDAP is used for holding authoritative information about the accounts, such as what they’re allowed to access (authorization), the user’s full name and uid.
What is the purpose of port 443?
Port 443 is a virtual port that computers use to divert network traffic. Billions of people across the globe use it every single day. Any web search you make, your computer connects with a server that hosts that information and fetches it for you. This connection is made via a port – either HTTPS or HTTP port.
Should I open port 139?
If you are on Windows-based network that is running NetBios, it is perfectly normal to have port 139 open in order to facilitate that protocol. If you are not on a network using NetBios, there is no reason to have that port open.
Is port 445 TCP or UDP?
Port 445 Details
| Port(s) | Protocol | Service |
|---|---|---|
| 445 | tcp | |
| 445 | udp | |
| 445 | tcp | trojan |
| 445 | tcp,udp | microsoft-ds |
What are the ports used in Active Directory?
The following is the list of services and their ports used for Active Directory communication: UDP and TCP Port 135 for domain controllers-to-domain controller and client to domain controller operations. TCP Port 139 and UDP 138 for File Replication Service between domain controllers.
Where does the Active Directory communication take place?
Active Directory communication takes place using several ports. These ports are required by both client computers and Domain Controllers. As an example, when a client computer tries to find a domain controller it always sends a DNS Query over Port 53 to find the name of the domain controller in the domain.
What are the protocols for monitoring Active Directory?
Review a full list of protocols and ports required for monitoring Active Directory, Exchange, and Group Policy. Allow outbound connections from the dynamic (1024 – 65535) local port on the computer where Netwrix Auditor Server resides. Allow outbound connections to remote ports on the source and inbound connections to local ports on the target.
What are the required ports to communicate with domain controller?
Yes, the ephemeral ports are required. They are: •TCP & UDP 1025-5000 •TCP & UDP 49152-65535. In addition, there are about 25 or more additional ports that AD communications require: Active Directory Replication over Firewalls, Jan 31, 2006.