Common Port Numbers
· HTTP is Hyper Text Transport Protocol and is transmitted over the wire via PORT 80(TCP).
· HTTPS uses port 443 instead of HTTP port 80 in its interactions with the lower layer, TCP/IP.
· SMTP for sending e-mail on port 25
· POP and IMAP for retrieving e-mail
| Service | Port Number | Protocol |
| AFP (Apple file service ) | 548 | TCP |
| Apple Remote Desktop (Remote Management) | 3283, 5900 | TCP, UDP |
| HTTP (Web service) | 80 or 8080 | TCP |
| HTTPS (secure Web service via SSL) | 443 | TCP |
| iCal Server | 8008 | TCP |
| iCal Server using SSL (Secure Sockets Layer) | 8443 | TCP |
| iChat Server | 5222 | TCP |
| iChat Server’s file transfer proxy | 7777 | TCP |
| iChat Server, server-to-server connection | 5269 | TCP |
| iChat Server using SSL | 5223 | TCP |
| Mail: IMAP | 143 | TCP |
| Mail: IMAP using SSL | 993 | TCP |
| Mail: POP3 | 110 | TCP, UDP |
| Mail: POP3 using SSL | 995 | TCP, UDP |
| Mail: SMTP legacy SSL submission | 465 | TCP |
| Mail: SMTP standard | 25 | TCP, UDP |
| Mail: SMTP submission | 587 | TCP |
| SMB/CIFS (Windows file service) | 161 | TCP |
| SSH (Secure Shell) remote connection | 22 | TCP, UDP |
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| Ports | |
| Port | Use |
| 21 | FTP – usually in DMZ |
| 22 | SSH |
| 23 | Telnet |
| 25 | SMTP |
| 49 | TACACS |
| 53 | DNS |
| 67 & 68 | DHCP |
| 80 or 8080 | HTTP |
| 110 | POP3 |
| 143 | IMAP4 |
| 161 | SNMP |
| 389 & 636 | LDAP |
| 443 | HTTPS / SSL |
| UDP 1701 | L2TP |
| TCP 1723 | PPTP |
BGP · DHCP · DNS · FTP · GTP · HTTP · IMAP · IRC · LDAP · Megaco · MGCP · NNTP · NTP · POP · RIP · RPC · RTP · RTSP · SDP · SIP · SMTP · SNMP · SOAP · SSH · Telnet · TLS/SSL · XMPP ·
TCP · UDP · DCCP · SCTP · RSVP · ECN ·
IP (IPv4, IPv6) · ICMP · ICMPv6 · IGMP · IPsec ·
