Common Ports Flashcards
1
Q
What is port 20/21 used for?
A
FTP by TCP
2
Q
What is port 22 used for?
A
SSH by TCP
3
Q
What is port 23 used for?
A
Telnet by TCP
4
Q
What is port 25 used for?
A
SMTP by TCP
5
Q
What is port 53 used for?
A
DNS by TCP or UDP
6
Q
What is port 67 used for?
A
DHCP by TCP
7
Q
What is port 69 used for?
A
TFTP by TCP
8
Q
What is port 80 used for?
A
HTTP by TCP
9
Q
What is port 110 used for?
A
POP3 by TCP
10
Q
What is port 135 used for?
A
RPC by TCP
11
Q
What is port 137-139 used for?
A
NetBIOS by TCP or UDP
12
Q
What is port 143 used for?
A
IMAP by TCP
13
Q
What is port 161/162 used for?
A
SNMP by TCP
14
Q
What is port 389 used for?
A
LDAP by TCP and UDP
15
Q
What is port 443 used for?
A
HTTPS by TCP
