SSH (Secure Shell) and Virtual Private Network(VPN)

 As stated in my previous blog, SSH and VPN works almost similarly. They both provide the user with secure access to transfer data over an unsecured network. However, they serve different purposes. SSH is a protocol primarily designed for secure access to individual servers or devices. Users can execute commands, transfer files, and  forward specific ports, while encrypting the data. It is focused towards ensuring the completion of tasks, making it ideal for system admin and developers who need direct interaction over a remote server.

VPN, on the other hand, is a wider solution that ensure the security of all internet traffic between devices and a remote server. It creates an encrypted tunnel to protect online activity and masks the IP address. It is used to provide remote access to an organization's private network, or perhaps enhance privacy on a public network like in Cafe, malls, etc...

Both of them also possess drawbacks. SSH has limited network access and it requires experience to configure its complex setup, making it challenging for beginners. Moreover, it does not encrypt the entire interface but instead, only the one that is configured and does not provide secure access for multiple devices or users simultaneously without further setup.

As for VPN, its drawbacks are that encryption and routing internet traffic can slow down the connection. Using free VPNs can restrict the amount of servers available affecting the speed and flexibility. It may also be a potential tool for misuse as VPN can by-pass geo-restrictions and government censorship. To set up a private and reliable VPN server can be complex and VPN with paid services can be costly.

To conclude, SSH is reliable but limited while VPNs offer protection which can impact speed and cost.

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