Remote Access Technology

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Questions and Answers

Match the remote access methods with their descriptions:

Remote file access = Allows a remote client to upload and download data files and configuration files. Terminal emulation = Virtual connection that remotely accesses resources between a client and a network, two networks, or two hosts over the Internet or other types of networks Virtual Private Network (VPN) = Remote computing over the internet using protocols like Telnet, SSH, Remote Desktop, and VNC Remote Desktop = Creating a private network via tunneling over a public network, usually the Internet

Match the remote access components with their functions:

RAS (Remote Access Server) = Installed on the client and server to negotiate and maintain the connection VPN Server = Grants privileges to the network's resources VPN Client = Installed on the server to accept a remote connection Remote Access Software = Installed on both the client and server to establish a connection

Match the remote access techniques with their characteristics:

Terminal Emulation = Requires a VPN server and client to establish a connection VPN = Encryption and encapsulation of packets for transmission over the network Remote File Access = Uses protocols like Telnet, SSH, Remote Desktop, and VNC Remote Desktop = Allows upload and download of data files and configuration files

Match the remote access methods with their purposes:

Remote File Access = Virtual connection that remotely accesses resources between a client and a network Terminal Emulation = Accessing files, applications, and shared resources on a remote server VPN = Creating a private network via tunneling over a public network RAS = Connecting to a server, LAN, or WAN in a different geographical location Signup and view all the answers

Match the remote access concepts with their descriptions:

Remote Access = A private network that is created via tunneling over a public network RAS = A service that allows a client to connect with and log on to a server, LAN, or WAN in a different geographical location VPN = Software that accepts a remote connection and grants privileges to the network's resources Virtual Private Network = A method of accessing files, applications, and shared resources on a remote server Signup and view all the answers

Match the following VPN types with their descriptions:

Site-to-Site VPN = Typically enabled dynamically by the user when required Remote Access VPN = Used to connect networks across another untrusted network Clientless VPN = A type of Remote Access VPN Client-based VPN = A type of Site-to-Site VPN Signup and view all the answers

Match the following terminal emulators with their features:

Telnet = Encrypts data exchanged throughout the session SSH = Allows an administrator to control a computer remotely FTP = A utility that can transfer files to and from a host computer Remote Desktop Connection = Used to modify the configuration on a router in another building Signup and view all the answers

Match the following security measures with their purposes:

Strong password policy = Limits VPN access to those with a valid business reason Secure Shell (SSH) = Prevents unauthorized access to a host End-to-end encryption = Guards against IP spoofing Limiting VPN access = Protects against interception of data in transit Signup and view all the answers

Match the following protocols with their uses:

FTP = Used to modify the configuration on a router in another building L2TP over IPsec = Used to provide remote file access Telnet = Used to securely log on to a host SSH = Used to transfer files to and from a host computer Signup and view all the answers

Match the following security threats with their descriptions:

Unauthorized access to a host = An attacker attempts to hide their identity or impersonate another device IP spoofing = An attacker gains access to a host without permission Interception of data in transit = Data is viewed by an unauthorized party during transmission Data encryption = Data is protected from unauthorized access Signup and view all the answers

Study Notes

Remote Access

Remote access allows a client to connect with and log on to a server, LAN, or WAN in a different geographical location to access files, applications, and shared resources.
The client and host need a transmission path and software to complete the connection and exchange data.

Remote Access Server (RAS)

RAS software is required to accept a remote connection and grant privileges to the network's resources.
Software must be installed on both the remote client and the remote access server to negotiate and maintain the connection.

Remote Access Methods

Remote file access: allows a remote client to upload and download data files and configuration files.
Terminal emulation (Remote virtual computing): uses protocols like Telnet, SSH, Remote Desktop, and VNC.
Virtual Private Network (VPN): creates a virtual connection between a client and a network, two networks, or two hosts over the Internet or other types of networks.

Virtual Private Network (VPN)

A VPN is a private network created via tunneling over a public network, usually the Internet.
A VPN connection requires a VPN server at the remote site and a VPN client at the client site.
VPN traffic between client and server is encrypted and encapsulated into packets suitable for transmission over the network.

Types of VPN

Site-to-Site VPN: connects networks across another untrusted network, such as the Internet.
Remote Access VPN: connects a remote user to a network, typically enabled dynamically by the user when required.

Site-to-Site VPN

Used to connect networks across another untrusted network, such as the Internet.
End hosts send and receive normal unencrypted TCP/IP traffic through a VPN terminating device (VPN gateway).

Remote Access VPN

Can be created using either IPsec or SSL.
Two ways to initiate a remote access VPN connection: clientless VPN and client-based VPN.

Remote File Access

File Transfer Protocol (FTP): commonly used to provide remote file access.
FTP is a utility that can transfer files to and from a host computer running FTP server software.

Terminal Emulator

Software that allows a user on one computer to control another computer across a network connection.
Examples: Telnet, SSH, Remote Desktop Connection (Teamviewer, VNC, and Chrome Remote Desktop).

Terminal Emulator - Telnet

Telnet protocol is a terminal emulation utility used by Telnet client/server applications.
Allows an administrator or user to control a computer remotely.

Terminal Emulator - Secure Shell (SSH)

SSH is a collection of protocols that performs both authentication and encryption.
Encrypts data exchanged throughout the session, guarding against several security threats.

Securing Remote Access

Use the strongest possible authentication method for VPN access.
Limit VPN access to those with a valid business reason, and only when necessary.
Implement and enforce a strong password policy.

Securing Remote File Access

Pick a service that offers end-to-end encryption.
Always double-check permission settings.
Run audits on files to see who is accessing them.

Securing Terminal Emulation

Use the Secure Sockets Layer (SSL) to secure Telnet communications sessions.
Replace Telnet with Secure Shell.

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Description

Remote access allows clients to connect to a server, LAN, or WAN from a different location, accessing files, applications, and shared resources.