Why ?

If you are using some of the non public remote-shell.net services, you may want to store our self signed root certificate in your OS, so that browsers are happy with the https sites

On Android:

• Download the remote-shell root certificate here
• Open your phone’s Settings app.
• Tap Security then Encryption & credentials.
• Tap Install a certificate.
• Tap CA Certificate
• Identify yourself
• Tap where you saved the certificate ( probably in the downloads )
• Tap the file. (If needed, enter the key store password. Tap OK.)
• Tap OK.

On Mac OS:

• Download the remote-shell root certificate here
• Open up Keychain Access by searching it on Spotlight (clicking the Magnifying glass located on the upper right corner).
• Select File > Import Items. Navigate to the file downloaded. Select System as “Destination Keychain” if asked ( older macos will not ask )
• Enter password if prompted
• On some older Mac OS version you also need to do the following:
  • Right click on the certificate in Keychain Access and select Get Info
  • Expand the Trust section
  • Under When using this certificate select Always Trust.
• Log out to take effect and relog.

On Linux:

• Follow the steps on this arch wiki link