FTP
File Transfer Protocol: Transfers files with a remote host
(typically requires authentication of
user credentials)
TCP PORT
20 (DATA)
21 (CONTROL)
UDP PORT
SFTP
Secure FTP: Provides FTP file-transfer service over an SSH connection
TCP PORT
22
UDP PORT
TFTP
Trivial File Transfer Protocol: Transfers files with a remote host
(does not require
authentication of user credentials)
TCP PORT
UDP PORT
69
HTTP
Hypertext Transfer Protocol: Retrieves content from a web server
TCP PORT
80
HTTPS
Hypertext Transfer Protocol Secure: Secures HTTP transmission over
an unsecured network
using Secure Sockets Layer (SSL) or the
more secure option of Transport Layer Security (TLS)
TCP PORT
443
DHCP
Dynamic Host Configuration Protocol: Dynamically assigns IP address
information (for
example, IP address, subnet mask, DNS server’s
IP address, and default gateway’s IP address)
to a network device
TCP PORT
UDP PORT
67
DNS
Domain Name System: Resolves domain names to corresponding IP addresses
TCP PORT
53
UDP PORT
53
Network Time Protocol: Used by a network device to synchronize its
clock with a time server
(NTP server)
TCP PORT
UDP PORT
123