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A+ ports

port numbers

21 (FTP server) listens for commands from FTP client
22 (SSH Server) listens
23 (Telenet server) listens
53 (DNS Server) listens
67 (DHCP server) listens
68 (DHCP Client) receives
80 (Web server using HTTP) receiving HTTP requests
443 (Web server using HTTPS) receiving HTTPS transmitions
25 (SMTP email server) receive email from email client
110 (POP3 email server) listens
143 (IMAP email server) requests
137-139 (SMB over NetBIOS) 137&138=SMB over UDP. 137&139 = SMB over TCP
NETBIOS legacy suite of protocols used by windows before TCP/IP
445 (SMB direct over TCP/IP) SMB3&2 for TCP/UDP
161 (SNMP agent) receives requests
162 (SNMP manager) listens
389 (LDAP) listens for LDAP communication
427 (SLP and AFP) find printers , file sharing devices, resources on local network.
548 (AFP) file sharing and file servers
3389 (RDP apps, including remote desktop and remote Assistance) listen
Created by: kirkpatricktj



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