The Most Common Ports for Exams Flashcards
What service runs through that port and what transfer protocol does it use?
1
Q
7
A
Echo
TCP, UDP
2
Q
20
A
FTP (File Transfer Protocol)
TCP, UDP, SCTP
3
Q
21
A
FTP (file Transfer Protocol)
TCP, UDP, SCTP
4
Q
22
A
SSH / SCP (Secure Shell / Secure Copy Protocol)
TCP, UDP, SCTP
5
Q
23
A
Telnet
TCP
6
Q
25
A
SMTP (Simple Mail Transfer Protocol)
TCP
7
Q
53
A
DNS (domain name system name resolver)
TCP, UDP
8
Q
67
A
DHCP / BOOTP (Dynamic Host Configuration Protocol / Bootstrap Protocol Server)
UDP
9
Q
68
A
DHCP / BOOTP (Dynamic Host Configuration Protocol / Bootstrap Protocol Server)
UDP
10
Q
69
A
TFTP
11
Q
80
A
HTTP
TCP, UDP, SCTP
12
Q
88
A
Kerberos
TCP, UDP
13
Q
110
A
POP3
14
Q
123
A
NTP
15
Q
137
A
NetBIOS
