@carolusv 

Okay, I understand that you are trying to run SSH and Telnet servers (Cygwin SSH on port 22/2222 and Telnet on port 23) on a device within your Deco Mesh network in router mode, but you are unable to access these servers from outside your network, even after changing the SSH port.

Here are some steps to help you troubleshoot port forwarding issues on your Deco Mesh system:

1. Confirm Internal Accessibility:
Make sure the SSH and Telnet servers are accessible from other devices within your local network. This verifies that the servers themselves are running correctly.

2. Check WAN IP Address:
Ensure you are using the public WAN IP address assigned to your Deco system when trying to access your servers from outside your network. If your WAN IP is private (for example, starting with 192.168.x.x, 10.x.x.x, or 172.16.x.x to 172.31.x.x), port forwarding will not work because your Deco is behind another router or NAT device.

3. Review Server Firewall Settings:
Check the firewall settings on your SSH/Telnet server device to confirm that it allows incoming connections from the external Internet on the ports you have configured (22, 2222, 23, etc.).

If you have followed these steps and port forwarding is still not working, please contact TP-Link support with the results of your troubleshooting for further assistance.

  @carolusv 

Ok let me see if i can get you more help on this. 

First please access the Deco web UI by entering "tplinkdeco.net" in your browser. Navigate to Advanced > System > System Log, select "ALL" in the log type, and save the file to your local computer. Then follow the steps below making sure to attach the logs to the email. Also please take screenshots of all your VPN settings. 

I recommend sending an email to forumsupport.usa@tp-link.com with the following information:

Subject: [Forum Escalation][ID 844160] Running ssh server on Deco network

Forum Nickname: [User Provided]

Thread URL: https://community.tp-link.com/us/home/forum/topic/844160

Model&Version: [User Provided]

Description: [User Provided]

Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]

 In the template above please fill in the areas that say [User Provided].  This will open a case with our engineering team, and they will work with you via email.