PORT 22 BLOCKED

Question

Hello,

since 6-9-24 i cant connect an sftp site from my windows azure windows 2016 server anymore. it is using port 22 and it always worked fine using filezilla. i disabled the firewall on the windows vm but that didnt help. what to do?

Answer 1

@HODIJ COATINGS BV ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

Can you please elaborate your environment?

• From your verbatim, you are using an Azure VM to connect to third party external site on Port 22 (SFTP)
• Is this correct?
• In that case, it is possible that the destination server is blocking your access
  • Either via Network (your IP) or via Authentication (credentials)
• Did you reach out to the SFTP Site provider and check if the packets are arriving or not?
• May I ask how you are confirming this is a Port blocked/networking issue from Azure end and not the destination.

By default, Azure NSGs don't block outbound access on Port 22 - so you should be able to connect.

• Do you have Azure Firewall deployed?
• From this VM, open Powershell as admin and run
  • Test-NetConnection -ComputerName "<YOURSFTPServer>" -Port 22
• From a regular server (your local laptop), open Powershell as admin and run
  • Test-NetConnection -ComputerName "<YOURSFTPServer>" -Port 22
• And share the results of both please.

Cheers,

Kapil