Ports and Protocols

Port 20

FTP protocol for data trnasmission

Port 21

FTP port for the acknowledgement of devices connected to each other and ready for data transmission

Port 22

Port for Secure File Transfer Protocol (SFTP)

Port 23

Port for telnet

Port 22

Port for Secure Shell (SSH)

Port 53

Port for DNS

Port 67

The port for DHCP listening and sending Ip requests

Port 68

Port for devices receiving an IP address from a DHCP server

Port 69

Port for Trivial File Transfer Protocol (TFTP)

Port 80

Port for Hypertext Transfer Protocol (HTTP)

Port 443

Port for HTTPS

Port 25

Port for Simple Mail Transfer Protocol (SMTP)

Port 587

Port for Simple Mail Transfer Protocol Transport Layer Security

Port 110

Port for Post Office Protocol V3 (POP3)

Port 995

Port for POP3 over SSL

Port 143

Port for Internet Message Access Protocol (IMAP)

Port 993

Port for IMAP over SSL

Port 123

Network Time Protocol (NTP) Port

Port 161

Port that SNMP uses to get information from a device

Port 162

Port that SNMP uses to send alerts

Port 389

Port number for Lightweight Directory Access Protocol (LDAP)

Port 636

Port for LDAP over SSL

Port 445

Port number for Sever Message Block (SMB)

Port 514

Syslog

Port 1433

Port for Structure Query Language (SQL)

Port 3389

Port for Remote Desktop Protocol (RDP)

Port 5060

Port for Session Initiation Protocol (SIP)

Port 5060

Port for SIP using TLS