Port Numbers
DHCP
Peer-to-Peer
Domains and the Web
Email and File Sharing
200

HTTP

80

200

DHCP stands for

Dynamic Host Configuration Protocol

200

Every connected end device in a p2p network

Peer

200

The secure protocol used to view a website

HTTPS

200

Servers that transport email to clients

Mail Server

400

HTTPS

443

400

The type of packet for DHCP Discover

Broadcast

400

A p2p network used to transfer digital money

Bitcoin

400

A server used to translate plain text names into an IP address

DNS (Domain Name Server)

400

Protocol used to send email to the server

SMTP (Simple Mail Transfer Protocol)

600

POP3

110

600

The group of addresses used by the DHCP server

pool

600

A p2p network used to transfer files

Bittorrent

600

FQDN

Fully-Qualified Domain Name

600

Protocol that uses two ports to communicate and send data

FTP (File Transfer Protocol)

800

FTP

20 or 21

800
The period of time that an IP address is granted

lease

800

A p2p network does NOT need one of these to function

dedicated server

800

The application layer protocol that uses message types such as GET, PUT, and POST

HTTP

800

Email protocol that is not ideal for small businesses, because it does not create a copy on the mail server

POP

1000

SMTP

25

1000

The final message sent from a DHCP server to the client

DHCPACK

1000

Peers in a p2p network can act as both of these

Client and server

1000

Two encryption options used for HTTPS

TLS(Transport Layer Security) or SSL(Secure Socket Layer)

1000

Clients establish long term connections to servers using this protocol

SMB