Port Numbers Flashcards
1
Q
What is a socket pair?
A
A combination of source IP and port number or destination IP and port number
2
Q
What are the range of port numbers 0 - 1023 known as?
A
Well known ports
3
Q
What are well known ports used for ?
A
Reserved for common and popular applications
4
Q
What is the 1024 - 49,151 range of port numbers known as?
A
Registered ports.
5
Q
Who approves and assigns registered port numbers?
A
IANA
6
Q
What is the 49,152 - 65,535 range of port numbers known as?
A
Private or dynamic
7
Q
DNS port number?
A
53
8
Q
DHCPv4 and DHCPv6 port number?
A
67/68
9
Q
SMTP port number?
A
25
10
Q
POP3 Port Number?
A
110
11
Q
IMAP port number?
A
143
12
Q
FTP port number?
A
21
13
Q
SFTP port number?
A
22
14
Q
TFTP port number?
A
69
15
Q
HTTP port number?
A
80
