Common Ports Flashcards
Echo Request (ICMP)
Port 7 (TCP/UDP)
File Transfer Protocol (FTP) - For Data Transfer
Port 20 (TCP/SCTP)
File Transfer Protocol (FTP) - For Control Connection
Port 21 (TCP, UDP, SCTP)
(SSH/SCP)
Secure Shell, secure logins, file transfers (scp, sftp), and port forwarding
Port 22 (TCP, UDP, SCTP)
Telnet
Port 23 (TCP)
SMTP
Port 25 (TCP)
(DNS) Domain Name System - For Name Resolver
Port 53 (TCP/UDP)
Trivial File Transfer Protocol (TFTP)
Port 69 (UDP)
(HTTP) Hypertext Transfer Protocol - For use with TCP in versions 1.x and 2.
Port 80 (TCP, UDP, SCTP)
Kerberos - Network Authentication System
Port 88 (TCP/UDP)
(POP3) Post Office Protocol, version 3
Port 110 (TCP)
(Microsoft EPMAP) - Microsoft End Point Mapper
Port 135 (TCP/UDP)
NetBIOS Name Service - For name registration and resolution (NetBIOS-ns)
Port 137 (TCP/UDP)
NetBIOS Session Service (NetBIOS-ssn)
Port 139 (TCP/UDP)
(IMAP4) Internet Message Access Protocol - For management of electronic mail messages on a server
Port 143 (TCP/UDP)
Hypertext Transfer Protocol Secure (HTTPS) -v Uses TCP in versions 1.x and 2 over SSL.
Port 443 (TCP, UDP, SCTP)
(SMTPS) SMTP over TLS/SSL - For secure SMTP
Port 465 (TCP)
SMTP (Alternative Email Message Submission Port)
Port 587 (TCP)
Lightweight Directory Access Protocol over TLS/SSL (LDAP over TLS/SSL)
Port 636 (TCP/UDP)
FTP over SSL (FTPS) - For secure file transfer
Port 989 (TCP/UDP)
FTP over SSL (FTPS) - For secure control messages
Port 990 (TCP/UDP)
(IMAPS) Internet Message Access Protocol over TLS/SSL - For secure IMAP
Port 993 (TCP)
(SPOP3) Post Office Protocol 3 over TLS/SSL - For secure POP3
Port 995 (TCP/UDP)
Microsoft RPC
Port 1025 (TCP)
OpenVPN
Port 1194 (TCP/UDP)
(MySQL) MySQL database system
Port 3306 (TCP)
(PostgreSQL) PostgreSQL database system
Port 5432 (TCP)
(RFB/VNC) Virtual Network Computing - For Remote Frame Buffer RFB protocol
Port 5900 (TCP/UDP)
(IRC) Internet Relay Chat
Port 6665 - 6669 (TCP)
(NTP) Network Time Protocol - For the Server to use
Port 123 (UDP)
(NTP) Network Time Protocol - For the Client to use
Port 1023 (UDP)
(SNMP) Simple Network Management Protocol - Port that the agent listens on
Port 161 (UDP)
(syslog) System Log port - For the server to listen on (UDP Only)
Port 514 (UDP)
(syslog) System Log port - For the server to listen on (TCP Only)
Port 601 (TCP)
Windows Event Log Collection
Port 49152–65535 (TCP)
Internet Relay Chat (IRC)
Port 194 (TCP/UDP)
(TACACS) Terminal Access Controller Access-Control System - For remote authentication and related services for network access
Port 49 (TCP/UDP)
(DHCP/BOOTP) Dynamic Host Configuration Protocol and Bootstrap Protocol - Server listens on this port
Port 67 (UDP)
(DHCP/BOOTP) Dynamic Host Configuration Protocol and Bootstrap Protocol - Client listens on this port
Port 68 (UDP)
(SNMP) Simple Network Management Protocol - Port that the Trap listens on asynchronously
Port 162 (UDP)
(AppleTalk) AppleTalk Routing Maintenance, also Trojan horses and computer viruses have used UDP port 201.
Port 201 (TCP/UDP)
(DHCPv6) Dynamic Host Configuration Protocol version 6. DHCPv6 Clients listen for DHCPv6 messages on UDP port 546
Port 546 (TCP/UDP)
(DHCPv6) DHCPv6 Servers and DHCPv6 Relay Agents listen for DHCPv6 messages on UDP port 547.
Port 547 (TCP/UDP)
(LDAP over TLS/SSL) Lightweight Directory Access Protocol over TLS/SSL
Port 636 (TCP/UDP)
(HTTP Proxy) Listening port for Proxy Server
Port 8080, 3128, 6588
(SIP) Session Initiation Protocol - For VOIP
Port 5060 (TCP/UDP)
(SIP-TLS) Secure Session Initiation Protocol - For VOIP
Port 5061 (TCP/UDP)
(Default RTP) Real-time Transport Protocol - For VOIP Audio
Port 5004 (UDP)
(Default RTSP) Real Time Streaming Protocol - For VOIP Audio
Port 5005 (UDP)
(IRC over SSL)
Port 6679, 6697 (TCP)