# Set up the SSL Certificates


Follow this instructions to configure a SSL certificate to serve NPM registry under HTTPS.

* Update the listen property in your `~/.config/verdaccio/config.yaml`:

````
listen: 'https://your.domain.com/'
````

Once you update the listen and try to run verdaccio again will ask for certificates.

* Generate your certificates

````
 $ openssl genrsa -out ~/.config/verdaccio/verdaccio-key.pem 2048
 $ openssl req -new -sha256 -key ~/.config/verdaccio/verdaccio-key.pem -out ~/.config/verdaccio/verdaccio-csr.pem
 $ openssl x509 -req -in ~/.config/verdaccio/verdaccio-csr.pem -signkey ~/.config/verdaccio/verdaccio-key.pem -out ~/.config/verdaccio/verdaccio-cert.pem
 ````
 
* Edit your config file `~/.config/verdaccio/config.yalm` an add the following section

````
https:
  key: ~/.config/verdaccio/server.key
  cert: ~/.config/verdaccio/server.crt
  ca: ~/.config/verdaccio/server.ca
````

* Run `verdaccio` in your command line.

* Open the browser and load `https://your.domain.com:port/`

This instructions are mostly valid under OSX and Linux, on Windows the paths will vary but, the steps are the same.