0
Q
HTTPS
A
TCP PORT 443
Secure web browsing
1
Q
HTTP
A
TCP PORT 80
Web browsing
2
Q
FTP
A
TCP PORT 20 & 21
Exchanging data over the internet
3
Q
TELNET
A
TCP PORT 23
Remotely configure a host through a terminal
4
Q
DNS
A
TCP PORT 53
Changes www.yahoo into IP address
5
Q
SNMP
A
161 & 162 port
6
Q
SMTP
A
Port 25
Sending email
7
Q
Pop
A
Port 110
Retrieving email from the server
8
Q
IMAP
A
Port 143
Used instead of pop3 to access email from multiple locations
9
Q
Terminal Services
A
Port 3389
Remote Desktop
10
Q
NAT
A
No port number
Converts private addresses used on internal networks
