Common UDP And TCP Ports

TCP and UDP ports can be any number between 0 and 65,535

-+Most servers (Services) Use non-ephemeral port numbers (not always a case, just a number)
-+Port numbers are for communication, not security
-+Service port numbers need to be "well known"
-+TCP Port numbers aren't the same as UDP port numbers


IPV4 With TCP/UDP

• Server ip address, server application port number

• Client ip addres, client port number

Non-Ephemeral ports - Permanent port numbers

• usually on a server or service

Ephemeral Ports - Temporary port numbers

• Determined in real-time by the client workstation

TCP Ports
FTP - File Transfer Protocol tcp/20 (data), tcp/21 (control)
SSH - Secure Shell tcp/23
Telnet - tcp/23
SMTP - Simple Mail Transfer Protocol tcp/25
DNS - Domain Name Services tcp/53 (Zone Transfers)
HTTP - Hyper Text Transfer Protocol tcp/80
Pop3 - Post Office Protocol Version 3 tcp/110
IMAP4 - Internet Message Access Protocol V4 tcp/143
HTTPS - Hypertext Transfer Protocol Secure tcp/443

UDP Ports 
DNS - Domain Name Services udp/53 (Queries)
BOOTP / DHCP - Bootstrap Protocol / Dynamic Host Configuration Protocol udp/67
TFTP - Trivial File Transfer Protocol udp/69
NTP - Network Time Protocol udp/123
SNMP - Simple Network Management Protocol udp/161


All Information was learned from Professor Messer