# Starting Apache HTTP server

{% hint style="info" %}
Please follow the steps to restart Screena Portal in this order:

1. [Starting PostgreSQL database](https://help.screena.ai/resources/how-to/start-screena-portal/starting-postgresql-database)
2. [**Starting Apache HTTP server** ](https://help.screena.ai/resources/how-to/start-screena-portal/starting-apache-http-server)**(you are here)**
3. [Starting Screena application](https://help.screena.ai/resources/how-to/start-screena-portal/starting-screena-application)
   {% endhint %}

In case of an update of the security settings, enter this command to re-authorize the Apache server to communicate with the Spring Boot application:

```shell
sudo setsebool httpd_can_network_connect on
```

Then enter this command to start Apache HTTP server:

```shell
sudo service httpd start
```