List of Port numbers in Windows
Below is the list of TCP/UDP port numbers being used in Windows
| Port | TCP | UDP | Description |
| 9 | UDP | Wake-on-LAN | |
| 20 | TCP | UDP | FTP data transfer |
| 21 | TCP | FTP control (command) | |
| 22 | TCP | UDP | Secure Shell (SSH) — used for secure logins, file transfers (scp, sftp) and port forwarding |
| 23 | TCP | UDP | Telnet protocol—unencrypted text communications |
| 25 | TCP | Simple Mail Transfer Protocol (SMTP) used for e-mail routing between mail servers | |
| 42 | TCP | UDP | Windows Internet Name Service |
| 53 | TCP | UDP | Domain Name System (DNS) |
| 57 | TCP | Mail Transfer Protocol (RFC 780) | |
| 67 | UDP | Bootstrap Protocol (BOOTP) Server; also used by Dynamic Host Configuration Protocol (DHCP) | |
| 68 | UDP | Bootstrap Protocol (BOOTP) Client; also used by Dynamic Host Configuration Protocol (DHCP) | |
| 69 | UDP | Trivial File Transfer Protocol (TFTP) | |
| 80 | TCP | Hypertext Transfer Protocol (HTTP) | |
| 88 | TCP | UDP | Kerberos—authentication system |
| 115 | TCP | Simple File Transfer Protocol (SFTP) | |
| 119 | TCP | Network News Transfer Protocol (NNTP) —retrieval of newsgroup messages | |
| 123 | UDP | Network Time Protocol (NTP)—used for time synchronization | |
| 135 | TCP | UDP | DCE endpoint resolution |
| 135 | TCP | UDP | Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service,[15] used to remotely manage services including DHCP server, DNS server and WINS. |
| 137 | TCP | UDP | NetBIOS NetBIOS Name Service |
| 138 | TCP | UDP | NetBIOS NetBIOS Datagram Service |
| 139 | TCP | UDP | NetBIOS NetBIOS Session Service |
| 143 | TCP | Internet Message Access Protocol (IMAP)— management of email messages | |
| 161 | UDP | Simple Network Management Protocol (SNMP) | |
| 162 | TCP | UDP | Simple Network Management Protocol Trap (SNMPTRAP)[18] |
| 389 | TCP | UDP | Lightweight Directory Access Protocol (LDAP) |
| 401 | TCP | UDP | UPS Uninterruptible Power Supply |
| 443 | TCP | Hypertext Transfer Protocol over TLS/SSL (HTTPS) | |
| 445 | TCP | Microsoft-DS Active Directory, Windows shares | |
| 445 | TCP | Microsoft-DS SMB file sharing | |
| 464 | TCP | UDP | Kerberos Change/Set password |
| 530 | TCP | UDP | RPC |
| 543 | TCP | klogin, Kerberos login | |
| 544 | TCP | kshell, Kerberos Remote shell | |
| 546 | TCP | UDP | DHCPv6 client |
| 547 | TCP | UDP | DHCPv6 server |
| 636 | TCP | UDP | Lightweight Directory Access Protocol over TLS/SSL (LDAPS) |
| 647 | TCP | DHCP Failover protocol[24] | |
| 989 | TCP | UDP | FTPS Protocol (data): FTP over TLS/SSL |
| 1812 | TCP | UDP | radius, RADIUS authentication protocol |
| 1813 | TCP | UDP | radacct, RADIUS accounting protocol |
| 3389 | TCP | UDP | Microsoft Terminal Server (RDP) |
| 6600 | TCP | Microsoft Hyper-V Live |
With 19 years of hands-on experience in the IT industry, I’m passionate about sharing the knowledge I’ve gained across a wide range of technologies. Specializing in Active Directory, Azure, VMware, Windows, and Linux, I am dedicated to empowering IT professionals and enthusiasts with practical insights and solutions.
Whether you’re looking for troubleshooting tips, deep dives into systems architecture, or the latest in cloud computing, I’m here to help you navigate the evolving tech landscape. Let’s connect, learn, and grow together!
📧 ravi.chopra1709@gmail.com
Whether you’re looking for troubleshooting tips, deep dives into systems architecture, or the latest in cloud computing, I’m here to help you navigate the evolving tech landscape. Let’s connect, learn, and grow together!
📧 ravi.chopra1709@gmail.com
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