INDEX
Well known (0–1023)
Port Service Protocol Description
7 Echo TCP, UDP Echo service
19 CHARGEN TCP, UDP Character Generator Protocol, has severe vulnerabilities and thus is rarely used nowadays
20 FTP-data TCP, SCTP File Transfer Protocol data transfer
21 FTP TCP, UDP, SCTP File Transfer Protocol command control
22 SSH/SCP/SFTP TCP, UDP, SCTP Secure Shell, secure logins, file transfers (scp, sftp), and port forwarding
23 Telnet TCP Telnet protocol, for unencrypted text communications
25 SMTP TCP Simple Mail Transfer Protocol, used for email routing between mail servers
42 WINS Replication TCP, UDP Microsoft Windows Internet Name Service, vulnerable to attacks on a local network
43 WHOIS TCP, UDP Whois service, provides domain-level information
49 TACACS UDP; can also use TCP but not necessarily on port 49 Terminal Access Controller Access-Control System, provides remote authentication and related services for network access
53 DNS TCP, UDP Domain Name System name resolver
67 DHCP/BOOTP UDP Dynamic Host Configuration Protocol and its predecessor Bootstrap Protocol Server; server port
68 DHCP/BOOTP UDP Dynamic Host Configuration Protocol and its predecessor Bootstrap Protocol Server; client port
69 TFTP UDP Trivial File Transfer Protocol
70 Gopher TCP Gopher is a communication protocol for distributing, searching, and retrieving documents in Internet Protocol (IP) networks
79 Finger TCP Name/Finger protocol and Finger user information protocol, for retrieving and manipulating user information
80 HTTP TCP, UDP, SCTP Hypertext Transfer Protocol (HTTP) uses TCP in versions 1.x and 2. HTTP/3 uses QUIC, a transport protocol on top of UDP
88 Kerberos TCP, UDP Network authentication system
102 Microsoft Exchange ISO-TSAP TCP Microsoft Exchange ISO Transport Service Access Point (TSAP) Class 0 protocol
110 POP3 TCP Post Office Protocol, version 3 (POP3)
113 Ident TCP Identification Protocol, for identifying the user of a particular TCP connection
119 NNTP (Usenet) TCP Network News Transfer Protocol
123 NTP UDP Network Time Protocol
135 Microsoft RPC EPMAP TCP, UDP Microsoft Remote Procedure Call (RPC) Endpoint Mapper (EPMAP) service, for remote system access and management
137 NetBIOS-ns TCP, UDP NetBIOS Name Service, used for name registration and resolution
138 NetBIOS-dgm TCP, UDP NetBIOS Datagram Service, used for providing access to shared resources
139 NetBIOS-ssn TCP, UDP NetBIOS Session Service
143 IMAP TCP, UDP Internet Message Access Protocol (IMAP), management of electronic mail messages on a server
161 SNMP-agents (unencrypted) UDP Simple network management protocol; agents communicate on this port
162 SNMP-trap (unencrypted) UDP Simple network management protocol; listens for asynchronous traps
177 XDMCP UDP X Display Manager Control Protocol
179 BGP TCP Border Gateway Protocol
194 IRC UDP Internet Relay Chat
201 AppleTalk TCP, UDP AppleTalk Routing Maintenance. Trojan horses and computer viruses have used UDP port 201.
264 BGMP TCP, UDP Border Gateway Multicast Protocol
318 TSP TCP, UDP Time Stamp Protocol
381 HP Openview TCP, UDP HP performance data collector
383 HP Openview TCP, UDP HP data alarm manager
389 LDAP TCP, UDP Lightweight directory access protocol
411 (Multiple uses) TCP, UDP Direct Connect Hub, Remote MT Protocol
412 (Multiple uses) TCP, UDP Direct Connect Client-to-Client, Trap Convention Port
427 SLP TCP Service Location Protocol
443 HTTPS (HTTP over SSL) TCP, UDP, SCTP Hypertext Transfer Protocol Secure (HTTPS) uses TCP in versions 1.x and 2. HTTP/3 uses QUIC, a transport protocol on top of UDP.
445 Microsoft DS SMB TCP, UDP Microsoft Directory Services: TCP for Active Directory, Windows shares; UDP for Server Message Block (SMB) file-sharing
464 Kerberos TCP, UDP For password settings on Kerberos
465 SMTP over TLS/SSL, SSM TCP Authenticated SMTP over TLS/SSL (SMTPS), URL Rendezvous Directory for Cisco’s Source Specific Multicast protocol (SSM)
497 Dantz Retrospect TCP, UDP A software suite for backing up operating systems
500 IPSec / ISAKMP / IKE UDP Internet Protocol Security / Internet Security Association and Key Management Protocol / Internet Key Exchange
512 rexec TCP Remote Process Execution
513 rlogin TCP The Unix program rlogin allows users to log in on another host using a network.
514 syslog UDP Syslog Protocol, for collecting and organizing all of the log files sent from the various devices on a network
515 LPD/LPR TCP Line Printer Daemon protocol, or Line Printer Remote protocol
520 RIP UDP Routing Information Protocol, used to find the optimal path between source and destination networks
521 RIPng (IPv6) UDP Routing Information Protocol next generation, the IPv6 compatible version of RIP
540 UUCP TCP Unix-to-Unix Copy Protocol
548 AFP TCP Apple Filing Protocol
554 RTSP TCP, UDP Real Time Streaming Protocol
546 DHCPv6 TCP, UDP Dynamic Host Configuration Protocol version 6. DHCPv6 Clients listen for DHCPv6 messages on UDP port 546.
547 DHCPv6 TCP, UDP DHCPv6 Servers and DHCPv6 Relay Agents listen for DHCPv6 messages on UDP port 547.
560 rmonitor UDP Remote Monitor
563 NNTP over TLS/SSL TCP, UDP Network News Transfer Protocol with encryption and verification
587 SMTP TCP For email message submission via SMTP
591 FileMaker TCP FileMaker Web Companion, the web publishing technology available in FileMaker versions 4-6
593 Microsoft DCOM TCP, UDP Distributed Component Object Model (DCOM)
596 SMSD TCP, UDP SysMan Station daemon
631 IPP TCP Internet Printing Protocol
636 LDAP over TLS/SSL TCP, UDP Lightweight Directory Access Protocol over TLS/SSL
639 MSDP (PIM) TCP Multicast Source Discovery Protocol, which is part of the Protocol Independent Multicast (PIM) family
646 LDP (MPLS) TCP, UDP Label Distribution Protocol, applies to routers capable of Multiprotocol Label Switching (MPLS)
691 Microsoft Exchange TCP Microsoft Exchange Routing
860 iSCSI TCP Internet Small Computer Systems Interface
873 rsync TCP The rsync file synchronization protocol efficiently transfers and synchronizes files between devices and networked computers.
902 VMware Server TCP, UDP VMware ESXi, a hypervisor
989 FTPS TCP File Transfer Protocol (data) over TLS/SSL
990 FTPS TCP File Transfer Protocol (control) over TLS/SSL
993 IMAP over SSL (IMAPS) TCP Internet Message Access Protocol over TLS/SSL
995 POP3 over SSL (POP3S) TCP, UDP Post Office Protocol 3 over TLS/SSL
Registered (1024–49151)
Port Service Protocol Description
1025 Microsoft RPC TCP Microsoft Remote Procedure Call
1026 Windows Messenger UDP Windows Messenger popup spam
1027 Windows Messenger UDP Windows Messenger popup spam
1028 Windows Messenger UDP Windows Messenger popup spam
1029 Windows Messenger UDP Windows Messenger popup spam
1080 SOCKS proxy TCP (or UDP since SOCKS5) Socket Secure. This protocol exchanges network packets between a client and server through a proxy server.
1080 MyDoom TCP Computer virus
1194 OpenVPN TCP, UDP OpenVPN
1214 KAZAA TCP A peer-to-peer file-sharing protocol
1241 Nessus TCP, UDP Nessus Security Scanner
1311 Dell OpenManage TCP Dell EMC OpenManage Server Administrator Web GUI
1337 WASTE TCP WASTE peer-to-peer encrypted file-sharing Program
1589 Cisco VQP TCP, UDP Cisco VLAN Query Protocol (VQP)
1701 L2TP VPN TCP Layer Two Tunneling Protocol Virtual Private Networking
1720 H.323 TCP H.323 Call Control Signaling, a VoIP call control protocol
1723 Microsoft PPTP TCP, UDP Point-to-Point Tunneling Protocol Virtual Private Networking
1725 Steam UDP Valve Steam Client uses port 1725
1741 CiscoWorks SNMS 2000 TCP CiscoWorks Small Network Management Solution web server
1755 MMS TCP, UDP Microsoft Media Server
1812 RADIUS UDP RADIUS server authentication and authorization
1813 RADIUS UDP RADIUS server accounting
1863 (Multiple uses) TCP, UDP MSN Messenger, Xbox Live 360
1900 UPnP UDP Universal Plug and Play
1985 Cisco HSRP UDP Hot Standby Router Protocol
2000 Cisco SCCP TCP Skinny Client Control Protocol
2002 Cisco ACS TCP Access Control Server
2049 NFS UDP Network File Sharing
2082 cPanel TCP, UDP cPanel default
2083 radsec, cPanel TCP, UDP Secure RADIUS Service (radsec), cPanel default SSL
2100 amiganetfs TCP Amiga Network Filesystem
2222 DirectAdmin TCP Graphical web hosting control panel
2302 Gaming UDP The game HALO uses this port extensively
2483 Oracle TCP, UDP Oracle database listening for insecure client connections to the listener, replaces port 1521
2484 Oracle TCP, UDP Oracle database listening for SSL client connections to the listener
2745 Bagle.C – Bagle.H TCP Computer worms
2967 Symantec AV TCP, UDP Symantec System Center agent (SSC-AGENT)
3050 Interbase DB TCP, UDP Borland Interbase database
3074 XBOX Live TCP, UDP Gaming: Xbox LIVE and Games for Windows – Live
3127 MyDoom TCP Computer worm
3128 HTTP Proxy TCP Common web proxy server ports: 80, 8080, 3128, 6588
3222 GLBP TCP, UDP Gateway Load Balancing Protocol
3260 iSCSI Target TCP, UDP Microsoft iSCSI Target Server
3306 MySQL TCP MySQL database system
3389 RDP TCP Windows Remote Desktop Protocol (Microsoft Terminal Server)
3689 DAAP TCP Digital Audio Access Protocol, used by Apple’s iTunes and AirPort Express
3690 SVN TCP, UDP Apache Subversion, a version control system
3724 World of Warcraft TCP, UDP Some Blizzard games, Unofficial Club Penguin Disney online game for kids
3784 Ventrilo VoIP TCP, UDP Ventrilo’s Voice over Internet Protocol program
3785 Ventrilo VoIP TCP, UDP Ventrilo’s Voice over Internet Protocol program
4333 mSQL TCP Mini SQL server
4444 Blaster TCP, UDP Computer worm
4500 IPSec NAT Traversal UDP Internet Protocol Security Network Address Translation (NAT) Traversal
4664 Google Desktop TCP Google Desktop’s built-in HTTP server and indexing software
4672 eMule UDP Peer-to-peer file-sharing software
4899 Radmin TCP Remote computer control software
5000 UPnP TCP Universal Plug and Play
5001 iperf TCP Tool for measuring TCP and UDP bandwidth performance
5004 RTP, RTSP UDP Real-time Transport Protocol, Real Time Streaming Protocol
5005 RTP, RTSP UDP Real-time Transport Protocol, Real Time Streaming Protocol
5050 Yahoo! Messenger TCP Instant messaging service from Yahoo
5060 SIP TCP, UDP Session Initiation Protocol
5061 SIP-TLS TCP Session Initiation Protocol over TLS
5190 (Multiple uses) TCP, UDP ICQ, AIM (AOL Instant Messenger), Apple iChat
5222 XMPP TCP, UDP Extensible Messaging and Presence Protocol Client Connection; also used in Google Talk, Jabber, Apple iChat, WhatsApp, etc.
5223 XMPP TCP, UDP Extensible Messaging and Presence Protocol Client Connection; also used in Google Talk, Jabber, Apple iChat, WhatsApp, etc.
5353 MDNS UDP Multicast DNS
5432 PostgreSQL TCP PostgreSQL database system
5554 Sasser TCP Computer worm
5631 pcAnywhere UDP Symantec pcAnywhere
5632 pcAnywhere UDP Symantec pcAnywhere
5800 VNC over HTTP TCP Virtual Network Computing (VNC)
5900 RFB/VNC Server TCP, UDP VNC Remote Frame Buffer RFB protocol
5999 RFB/VNC Server TCP, UDP VNC Remote Frame Buffer RFB protocol
6000 X11 TCP X Window System protocol for delivering payloads between X clients and servers
6001 X11 UDP X Window System protocol for delivering payloads between X clients and servers
6112 Diablo TCP, UDP Gaming
6129 DameWare TCP Remote access software developed by SolarWinds
6257 WinMX UDP Windows Music Exchange, peer-to-peer file-sharing freeware
6346 Gnutella2 TCP, UDP Peer-to-peer network protocol
6347 Gnutella2 TCP, UDP Peer-to-peer network protocol
6379 Redis TCP Popular non-relational database management system (NoSql)
6500 GameSpy TCP, UDP Gaming
6566 SANE TCP, UDP Scanner Access Now Easy
6588 AnalogX TCP AnalogX proxy server
6588 HTTP Proxy TCP Common web proxy server ports: 80, 8080, 3128, 6588
6665 IRC TCP Internet Relay Chat
6666 IRC TCP Internet Relay Chat
6667 IRC TCP Internet Relay Chat
6668 IRC TCP Internet Relay Chat
6669 IRC TCP Internet Relay Chat
6679 IRC over SSL TCP Internet Relay Chat
6697 IRC over SSL TCP Internet Relay Chat
6699 Napster TCP Peer-to-peer file-sharing application
6881 BitTorrent TCP, UDP BitTorrent uses this range of ports the most often
6999 BitTorrent TCP, UDP BitTorrent uses this range of ports the most often
6891 Windows Live Messenger TCP, UDP Alternatively: MSN Messenger
6901 Windows Live Messenger TCP, UDP Alternatively: MSN Messenger
6970 Quicktime TCP, UDP QuickTime streaming server
7000 Cassandra TCP Inter-node communication within the cluster on Apache Cassandra
7001 Cassandra TCP SSL-enabled inter-node communication within the cluster on Apache Cassandra
7199 Cassandra JMX TCP Java Management Extensions on Apache Cassandra
7648 CU-SeeMe TCP, UDP Internet video conferencing client made by Cornell University
7649 CU-SeeMe TCP, UDP Internet video conferencing client made by Cornell University
8000 Internet Radio TCP Commonly choice of alternate HTTP port for web applications
8080 HTTP Proxy TCP Common web proxy server ports: 80, 8080, 3128, 6588
8086 Kaspersky AV TCP Kaspersky AV Control Center
8087 Kaspersky AV UDP Kaspersky AV Control Center
8118 Privoxy TCP Advertisement-filtering Web proxy
8200 VMware Server TCP, UDP VMware vSphere Fault Tolerance
8222 VMware Server TCP, UDP VMware Server Management User Interface (insecure Web interface).
8500 (Multiple uses) TCP, UDP Adobe ColdFusion, Flight Message Transfer Protocol
8767 Teamspeak UDP VoIP communication system for online gaming
8866 Bagle.B TCP Computer worm
9042 Cassandra TCP Apache Cassandra, a NoSql database
9100 PDL TCP PDL Data Stream, used for printing to certain network printers
9101 Bacula TCP, UDP For automating backup tasks
9102 Bacula TCP, UDP For automating backup tasks
9103 Bacula TCP, UDP For automating backup tasks
9119 MXit TCP, UDP MXit Instant Messaging (deprecated)
9800 WebDAV TCP, UDP Web-based Distributed Authoring and Versioning, an extension of HTTP
9898 Dabber TCP Computer worm (Sasser)
9999 Urchin TCP, UDP Urchin Web Analytics
10000 (Multiple uses) TCP, UDP Network Data Management Protocol; applications: Webmin, BackupExec, Viatalk; gaming: The Matrix Online, Dungeon Fighter
10161 SNMP-agents (encrypted) TCP Simple network management protocol; agents communicate on this port
10162 SNMP-trap (encrypted) TCP Simple network management protocol; listens for asynchronous traps
10113 NetIQ TCP, UDP NetIQ Endpoint
10114 NetIQ TCP, UDP NetIQ Qcheck
10115 NetIQ TCP, UDP NetIQ Endpoint
10116 NetIQ TCP, UDP NetIQ VoIP Assessor
11371 OpenPGP TCP, UDP OpenPGP HTTP Keyserver
12345 NetBus TCP NetBus remote administration tool (Trojan horse)
13720 NetBackup TCP, UDP NetBackup request daemon
13721 NetBackup TCP, UDP NetBackup request daemon
14567 Battlefield UDP Gaming
15118 Dipnet/Oddbob TCP Trojan horse
19226 AdminSecure TCP Panda Software AdminSecure Communication Agent
19638 Ensim TCP Ensim Control Panel
20000 Usermin TCP, UDP Web email interface for regular non-root users
24800 Synergy TCP, UDP Keyboard/mouse sharing software
25999 Xfire TCP Communication tool for gamers (deprecated)
27015 Half-Life UDP Gaming
27017 MongoDB TCP NoSql database
27374 Sub7 TCP, UDP Trojan horse
28960 Call of Duty TCP, UDP Gaming
31337 Back Orifice TCP, UDP Remote administration tool used for Trojan horses
33434+ traceroute UDP Utility for displaying paths and measuring transit delays of packets across a network
Dynamic (49152–65535)
You may use these ports for custom applications free from concerns that it may clash with existing processes.
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