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I'm working on aws cloud image which requires an ssh connection to connect. But my service provider has blocked the port 22 so I can't connect to cloud image. So how can I change Ssh configuration to change the port number from 22 to something other?

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  • I have cmder and git-bash installed on windows. – V2K Nov 12 '19 at 13:05
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If you are trying to change the SSH port in a Windows 10/Server 2016/2019 ,you can change the port in the below file

%programdata%\ssh\sshd_config

Locate the line that starts with Port and edit it there.

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You say Windows 10 but of course Windows doesn't natively use ssh. Though you can install bash or some other shell via the Linux Subsystem for Windows. This, I trust, is what you mean. Here are some basic instructions for changing the file containing the port information:

https://www.cyberciti.biz/faq/howto-change-ssh-port-on-linux-or-unix-server/

1:  find / -name "sshd_config" 2>/dev/null 
2:  sudo nano /path/to/file  ##  probably /etc/ssh/sshd_config 
3:  ## locate Port 22 (removing any leading #) 
4:  ctrl-o # save the file 
5:  ctrl-x # exit nano 

Once you have changed it you simply add the port designation to your ssh command when attempting to connect.

ssh username@host:port

(You may need to make firewall changes if there is one in between. It depends on the specifics of your arrangement.)

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  • I had install cmder and git-bash shell on windows. Is any of the shell configurations help for changing the port from 22 to some other port. – V2K Nov 12 '19 at 13:05
  • The instructions above should be approximately correct for any shell you have installed. Let me know if you run into any specific issues. – JamesIsIn Nov 12 '19 at 13:12
  • Can i change it without installing any linux sub-system. Can i do it only with the use of cmder. – V2K Nov 12 '19 at 13:24
  • If cmder gives you bash, then you ought to be able to do just the same. The Subsystem was what I was assuming you were using to get bash. (It works great if you are having any issues with cmder.) – JamesIsIn Nov 12 '19 at 13:28
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    Windows 10 does support OpenSSH now, both server and client. It can be activated via Settings App within Windows, google it. – Jimmy Falcon Apr 5 '20 at 9:45
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Nowadays, you can change the SSH port on Windows 10 easily (as mentioned by others).

All you need is in this Microsoft documentation page.

Brief look at:

  1. Install SSH server;
  2. Change port in config file %programdata%\ssh\sshd_config (for Windows):
    enter image description here
  3. Add new firewall rule with PowerShell running following command as Administrator:
    New-NetFirewallRule -Name sshd -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 2204
    where 2204 your port;
  4. Restart your 'SSH server' windows service;
  5. (optional) Delete firewall rule for default 22 port.

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