Complete README.md

README.md

@@ -19,16 +19,32 @@ token.
 
 The following env variables will need to be set:
 
-- **NB_API_URL**: The URL to your NetBox instance. (Example: https://netbox.example.org)
-- **NB_API_TOKEN**: The token created previously. (Example: f74cb99cf552b7005fd1a616b53efba2ce0c9656)
+- **NB_API_URL**: The URL to your NetBox instance. (ex: https://netbox.example.org)
+- **NB_API_TOKEN**: The token created previously. (ex: f74cb99cf552b7005fd1a616b53efba2ce0c9656)
 
 ### On pfSense
 
 pfSense does not provide any REST API out of the box. Therefore, you'll first need to install
 the [pfrest package](https://pfrest.org/INSTALL_AND_CONFIG/#).
 
+Once it's done you can create a user dedicated for this application (ex: pfsense-netbox-sync).
+You'll then need to grant the account all permissions for ``/api/v2/services/dns_resolver/*`` (Effective Privileges in
+the user page).
+
+Note: You **should** restrict API access to the IP who are using it.
+
+The following env variables will need to be set:
+
+- **PF_API_URL**: The URL to your pfSense instance. (ex: https://fw.example.org)
+- **PF_API_USER**: The username of the account created previously. (ex: pfsense-netbox-sync)
+- **PF_API_PASS**: The password of the account created previously. (ex: MQILv21OJIJ_x4dO0hZgJtwl)
+
 ## Executing the script
 
+You can then execute the script using the following command:
+
 ```
 PF_API_URL=xx PF_API_USER=xx PF_API_PASS=xx NB_API_URL=xx NB_API_TOKEN=xx python3 -m app
-```
+```
+
+The script will indicate any change made.