What Is Remote Access? How Does It Work?
Learn about remote access methods, protocols, and best practices.
Zero Trust Access For Dummies Vol 3 2025 THREAT LANDSCAPE REPORTRemote access refers to when you have the ability to access a different computer or network in another place. Remote computer access is often used to enable people to access important files and software on another user’s computer.
With remote access, a user can monitor, maintain, and control devices as long as they are connected to the same network. This opens up the possibility to troubleshoot issues without being in the same physical location as the device with the problem.
Remote access also enables you to access necessary files without having them sent via email or other means. You can also define who has the rights to the files, as well as organize users into different categories, giving some groups access to certain things while limiting the access of others.
Remote desktop access describes software that allows access to someone’s personal computer desktop by another user. During the interaction, the other user can see the target desktop on their own device.
A remote access connection gives users the power to connect to a private network from a different location. Both users have to connect to the same network.
Once both are connected to the remote access network, a protocol governed by access software interfaces that user's device with another user's device. The protocol gives one device the ability to access the functions of the target computer or server. This allows the keyboard, trackpad, touchscreen, or mouse of the controlling user to manipulate the target device.
Understanding the strengths and nuances of remote access protocols is essential for organizations seeking to build secure and efficient remote work environments. Following are the the most common and impactful protocols:
Point-to-Point Protocol (PPP): A foundational protocol for establishing direct connections between two computers, PPP is widely leveraged in broadband communications scenarios where high speed and robust handling of network traffic are paramount.
Internet Protocol Security (IPsec): IPsec safeguards data confidentiality and integrity by authenticating and encrypting information transmitted between computers over an IP network.
Point-to-Point Tunneling Protocol (PPTP): Though once a popular choice for creating VPN tunnels, PPTP has fallen out of favor due to identified security vulnerabilities. It's recommended to opt for more modern and secure alternatives.
Remote Access Services (RAS): A RAS setup empowers users to securely connect to a corporate network from remote locations, either through traditional dial-up connections or via a VPN.
Remote Desktop Protocol (RDP): A proprietary protocol developed by Microsoft, RDP furnishes users with a graphical interface to seamlessly interact with another computer's desktop environment over a network.
Virtual Private Network (VPN): VPNs establish encrypted tunnels over public networks like the internet, creating a secure pathway for remote users to access private networks and resources as if they were physically present.
Virtual Network Computing (VNC): VNC provides a graphical interface for remote desktop access, enabling users to view and control another computer's desktop environment from afar.
Proprietary Protocols: Some remote access solutions utilize proprietary protocols tailored to their specific platforms. These protocols incorporate robust security measures, such as AES-256 encryption and SSL/TLS key exchange, to fortify remote sessions.
Some remote access methods involve limited access or sharing of resources, but VPNs, VNCs, and RDPs allow users to both gain access to and have full control over another person’s computer via a remote network.
A VPN provides users with the ability to send and receive data between devices or via a private network that is extended over a public network. To gain access to another’s computer, both have to be connected to the same VPN and running the same access software.
With VNC, you have a graphical system through which users can share desktops. Whatever the remote user does on their keyboard or mouse gets sent to the other device, controlling it as if the person were sitting in front of it while also allowing the accessing user to see what they are doing on their own screen.
RDP is a program by Microsoft that provides a user with a graphical interface to connect with another computer via a network connection. The user utilizes the RDP client software while the other person’s computer runs the RDP software.
With internet proxy servers, a server performs the function of a go-between, allowing you to connect with another computer within the proxy server environment. Both computers connect to the same proxy server, and one user then gains access to the other’s computer.
There are other ways to access the information of another person’s computer, and each allows for different levels of control and data sharing.
A Remote Access Connection Manager (RasMan) is a service provided by Windows that manages VPN connections between your computer and the internet.
The Remote Access Connection Manager works by giving users the ability to organize RDP connections in groups. To make the group, the user initiates a “New” command from the File menu and is then guided through the creation of a group file.
Remote access enables businesses and individuals to connect and collaborate seamlessly, transcending the limitations of physical location. It improves productivity by allowing employees to access files and applications from anywhere, promoting flexibility and work-life balance. Moreover, remote access is important for troubleshooting technical issues, providing timely support, and maintaining business continuity in the face of unforeseen disruptions.
When engaging in remote access, regardless of the protocol, it is important to remember that your computer will be exposed to at least one other user. Because files can be transferred from one computer to another, the possibilities for the transfer of malware exist, as well as unacceptable access by an intruder. Here are some best practices to ensure remote access security.
While remote access offers numerous benefits, it's important to address the inherent security challenges to ensure data protection and maintain a safe working environment. Unauthorized access, data breaches, and malware infections are potential risks that organizations must proactively mitigate.
Unauthorized Access: Remote access expands the attack surface, making it essential to implement robust authentication mechanisms like strong passwords, multi-factor authentication (MFA), and access controls to prevent unauthorized individuals from gaining entry.
Data Breaches: Sensitive data transmitted during remote sessions is intercepted or compromised if not adequately protected. Encryption protocols like VPNs and secure file transfer mechanisms are vital to safeguard data confidentiality.
Malware Infections: Remote devices become entry points for malware, spreading across the network. Endpoint security solutions, including antivirus software and firewalls, are crucial to detect and prevent malicious attacks.
By implementing the following security measures, businesses can fortify their remote access infrastructure and reap its full benefits:
With proper endpoint protection, multi-factor authentication, passwords, and software, remote access can be a safe way to connect two devices. It is important to keep an eye out for threats that may be particularly dangerous when two devices are connected remotely.
A Trojan horse, for example, would be easy to get from one device to another, and it could go undetected because it often appears harmless. Similarly, a Remote Access Trojan (RAT) can gain access to a machine and provide control to the remote hacker. The RAT can let an intruder access files and gain complete control of the device.
It is important to also be careful of dangers that could be spread accidentally through files sent from one computer to the other. Some of these include viruses, spyware, and other malware.
Fortinet offers methods of remote access using a secure VPN connection. Protected by FortiGate, remote workers can access each other’s computers as well as those of internal workers safely and efficiently. The FortiGate VM next-generation firewall (NGFW) can support IPsec VPN traffic at speeds up to 20 Gbps. This enables seamless remote access without time-consuming glitches or delays.
Remote access lets you connect to another person’s computer and use it as if you were sitting in front of it yourself. The image of the other device’s desktop appears on your device, and your actions on your device can be used to control the other device almost as easily as if you were physically at the device.
The connection happens over remote access protocols, such as a virtual private network (VPN), virtual network computing (VNC), or Remote Desktop Protocol (RDP). Both users have to interface with the protocol for the connection to be successful, and both devices have to be compatible with the service. You can also connect using services like cable or fiber broadband, cellular service, or privileged access management (PAM).
It is critical to put security measures in place whenever you use remote access. Some best practices include endpoint protection, complex passwords, multi-factor authentication, updating your software, and limiting the number of users who can use the service. FortiGate provides users with a fast connection using VM next-generation firewall (NGFW) to enhance both security and effectiveness.
Remote access refers to when you have the ability to access a different computer or network in another place.
Although there are different remote access protocols, three of the most often used types of remote access are:
With remote access, a user can monitor, maintain, and control devices as long as they are connected to the same network. Remote access also enables you to access necessary files without having them sent via email or other means.
In an unattended remote access setup, you can access someone else's computer or server without them having to sit in front of it.
The ideal remote access solution depends on your requirements, such as the level of security needed, the types of devices involved, and the desired user experience. Consider factors like the size of your organization, the sensitivity of the data being accessed, and the technical expertise of your users.
Common challenges include security risks like unauthorized access and data breaches, as well as potential performance issues due to network latency or bandwidth limitations. Implementing strong authentication, encryption, and endpoint security measures can mitigate security risks.
Remote access and VPNs are not mutually exclusive; in fact, VPNs are a core component of secure remote access solutions. VPNs create encrypted tunnels for secure data transmission, enhancing the overall security of remote access.
The most secure method involves a combination of security measures, including strong authentication (e.g., multi-factor authentication), encryption (e.g., VPNs), endpoint security, and network segmentation. The specific approach may vary depending on the organization's needs and risk tolerance.
Remote access offers numerous benefits, including increased productivity, improved employee satisfaction, reduced operational costs, and enhanced business continuity. It enables flexible work arrangements, expands talent pools, and facilitates collaboration across geographical boundaries.
Remote access refers to the ability to access and utilize resources on a remote computer or network, while remote control implies taking full control of a remote device, including its mouse and keyboard.
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