I'm unable to connect ssh using putty on my pc, but on other pc I can

Question

Hello people of this community, I purchase a vpn and when tried to connect through ssh i got the error "connection timed out" every time I try to connect using putty. on a remote desktop I can.

I have read might be something related to firewall, I did the following "disable firewall or add the .exe file to firewall exceptions" I tried both and the error continues.

edit: im trying to connect from my pc using windows 10 and my vps is on ubuntu

Any other solution?

Answer 1

"Connection timed out" usually indicates some firewall is blocking the connection. Assuming your VPN provides an unrestricted network path between the PCs, it might be located:

• on your local system (but if you have added putty.exe to firewall exceptions, this should not be the problem)
• on the remote system (note that on the remote system, you must allow the SSH server process, not putty.exe - PuTTY is just a client)

Windows systems also won't necessarily include a SSH server by default: in PowerShell, run:

Get-WindowsCapability -Online | Where-Object Name -like 'OpenSSH.Server*'

to see if a SSH server is installed, and

Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0

to install it if necessary.

After installing the SSH server, you must also start it and configure it to start automatically at boot. That can be done with these PowerShell commands:

Start-Service sshd
Set-Service -Name sshd -StartupType 'Automatic'

Here's a PowerShell snippet for configuring Windows Firewall to accept incoming SSH connections (you may need to run this on the remote PC):

if (!(Get-NetFirewallRule -Name "OpenSSH-Server-In-TCP" -ErrorAction SilentlyContinue | Select-Object Name, Enabled)) {
    Write-Output "Firewall Rule 'OpenSSH-Server-In-TCP' does not exist, creating it..."
    New-NetFirewallRule -Name 'OpenSSH-Server-In-TCP' -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 22
} else {
    Write-Output "Firewall rule 'OpenSSH-Server-In-TCP' has been created and exists."
}