Doubt in Remote Access Methods.

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Hello @wes-bryan,
I'll list my doubts one by one,

1. In VNC like when one person remotely connects to a server, the one who is physically present near the server and is operating it from there doesn't get logged out. This I know. But can multiple people remotely connect via VNC? Also when it comes to other remote access methods, can we make multiple remote simultaneous connections to a single server/device?

2. While using SSH & Telnet, when we remotely make a connection to a server, does the person who is physically present near the server and operating it gets logged out as well?

3. In terms of security, RDP is more secure or SSH?

Thank You!

1- In VNC like when one person remotely connects to a server, the one who is physically present near the server and is operating it from there doesn't get logged out. This I know. But can multiple people remotely connect via VNC? Also when it comes to other remote access methods, can we make multiple remote simultaneous connections to a single server/device?

Yes, VNC can be setup to use multiple connections, typically configured through an
"Expert” or “Advanced” tab.

2 - While using SSH & Telnet, when we remotely make a connection to a server, does the person who is physically present near the server and operating it gets logged out as well?

SSH, is typically used in Unix/Linux-based systems and allows for multi-session support, the same way Unix/Linux supports the kernel/shell architecture allowing for multiuser connections to a single machine.

As far as SSH allowing multiple connections to a single connectivity device simultaneously, this is not a good idea and should be avoided. Telnet as well allows for multiple connections; however this scenario can cause configuration issues.

3 - In terms of security, RDP is more secure or SSH?

Both SSH and RDP are secure, however nothing is 100% secure.

SSH uses keys that need to be generated and maintained, so it can add a little bit of complexity to the setup, however keys are generally more secure that password strings which is the default in RDP as well as using a well-known port.

RDP requires MFA additions to strengthen the security, uses a port in the registered port range that requires additional firewall configuration (host-based and network-based). RDP will also require at least a port forwarding rule, however this is not scalable and for large environments will require an RDP Gateway. RDP is a Windows-based technology that does not require the end-user to have a high degree of technical knowledge to use. SSH is great for Unix/Linux-based and connectivity devices using a terminal interface.