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| layout | title | description | date | sidebar | comments | sharing | footer | redirect_from |
|---|---|---|---|---|---|---|---|---|
| page | Self-signed certificate for SSL/TLS | Configure a self-signed certificate to use with Home Assistant | 2016-10-06 08:00 | true | false | true | true | /cookbook/tls_self_signed_certificate/ |
If your Home Assistant instance is only accessible from your local network you can still protect the communication between your browsers and the frontend with SSL/TLS. Let's encrypt will only work if you have a DNS entry and remote access is allowed. The solution is to use a self-signed certificate. As you most likely don't have a certification authority (CA) your browser will conplain about the security. If you have a CA then this will not be an issue.
To create locally a certificate you need the OpenSSL command-line tool.
Change to your Home Assistant configuration directory like ~/.homeassistant. This will make it easier to backup your certificate and the key. Run the command shown below.
$ openssl req -new -x509 -sha256 -newkey rsa:4096 -nodes -keyout privkey.pem -days 730 -out fullchain.pem
For details about the parameters, please check the OpenSSL documentation. Provide the requested information during the generation process. At the end you will have two files called privkey.pem and fullchain.pem. The key and the certificate.
Update the http: entry in your configuration.yaml file and let it point to your created files.
http:
api_password: YOUR_SECRET_PASSWORD
ssl_certificate: /home/fab/.homeassistant/fullchain.pem
ssl_key: /home/fab/.homeassistant/privkey.pem
A tutorial "Working with SSL Certificates, Private Keys and CSRs" could give you some insight about special cases.