CompTIA A+ 1101 Networking Services and Protocols 1

FTP (File Transfer Protocol)

- transfers files between systems

- commonly requires authentication with a username and password

- contains file management functions

SSH (Secure Shell)

- provides a remote connection to a terminal device

- text based front-end

- encrypted connection

Telnet (Telecommunication Network)

- provides remote console access

- not encrypted

SMTP (Simple Mail Transfer Protocol)

- server to server email transfer

- also used to send mail to a mail server

- commonly configured on mobile devices and email services

DNS (Domain Name System)

- converts names to IP addresses

- lookup using "dig [website name]" or "nslookup [website name]" in command prompt

- configure using a text-based file, or a web-based front-end

DHCP (Dynamic Host Configuration Protocol)

- automated configuration of IP address, subnet mask, and other options

- assigns IP addresses in real-time from a pool

- utilizes a lease system

- can configure and utilize DHCP reservation

HTTP (Hypertext Transfer Protocol) and HTTPS (Hypertext Transfer Protocol Secure)

- communication in the browser, and by other applications

- supported by nearly all web servers and clients

- HTTP is unencrypted, while HTTPS is encrypted

POP3 (Post Office Protocol Version 3)

- basic mail transfer functionality

- retrieves emails from an email server

IMAP4 (Internet Message Access Protocol Version 4)

- includes management of an email inbox, from multiple clients

- like POP3, retrieves emails from an email server

SMB (Server Message Block) and CIFS (Common Internet File System)

- used by Microsoft Windows for file sharing and printer sharing

- used on most modern Windows machines

- can use NetBIOS over udp/137 through udp 139

SMNP (Simple Network Management Protocol)

- gathers statistics from network devices

v1:

- structured tables

- not encrypted

v2:

- data type enhancements

- bulk transfers

- not encrypted

v3:

- message integrity

- authentication

- encryption

LDAP (Lightweight Directory Access Protocol)

- stores and retrieves information in a network directory

- commonly used in Microsoft Active Directory

RDP (Remote Desktop Protocol)

- shares a desktop from a remote location

- can connect to the entire desktop, or just an application

- Windows only

File share

Centralized storage of documents/ standards system of file management SMB

Print server

Connect printers to the network

Standard printing protocols

Mail server

Store your incoming mail

Syslog

Message logging

Web server

Respond to browser requests/ web pages are stored on the server

Authentication server

The login server

Login authentication to resources

Almost always an enterprise service

Database table servers

Data base table storage