'Common Port Numbers & Ranges
What is the control port number for FTP?
[BL]
21

What is the data port number for FTP?
[BL]
20

What is the port number for Telnet?
[BL]
23

What is the port number for SMTP?
[BL]
25

What is the port number for POP3?
[BL]
110

What is the port number for HTTP?
[BL]
80

What is the port number for DNS?
[BL]
53

What is the port number for TFTP?
[BL]
69

What is the port number for SNMP?
[BL]
161

What is the port number for RIP?
[BL]
520

What is the well-known port range?
[BL]
0-1023

What are well-known ports?
[BL]
ports for well-known services
ports for well known services

What is the registered port range?
[BL]
1024-49151

What are registered ports?
[BL]
ports for vendor-specific applications
ports for vendor specific applications

What is the dynamic/private port range?
[BL]
49152-65535

What is the possible port range in a TCP or UDP header?
[BL]
0-65535