Common Ports Flashcards
1
Q
File Transfer Protocol (FTP)
A
TCP, port 21 for control and 20 for data transfer.
2
Q
Secure Shell (SSH)
A
TCP, port 22.
3
Q
Telnet
A
TCP, port 23.
4
Q
Simple Mail Transfer Protocol (SMTP)
A
TCP, port 25.
5
Q
Dynamic Host Configuration Protocol (DHCP)
A
UDP, ports 67 and 68.
6
Q
Domain Name System (DNS)
A
TCP or UDP, port 53.
7
Q
Trivial File Transfer Protocol (TFTP)
A
UDP, port 69.
8
Q
Hypertext Transfer Protocol (HTTP)
A
TCP, port 80.
9
Q
Network Time Protocol (NTP)
A
UDP, port 123.
10
Q
Simple Network Management Protocol (SNMP)
A
TCP and UDP, ports 161 & 162.
11
Q
What is TCP?
A
Transport Control Protocol. Establishes a session, makes sure information is received.
12
Q
What is UDP?
A
User Datagram Protocol. Does not establish a session, shoots data into the dark.
