# Step 5 of 6: Configuration settings

Every setting of this step can be modified after the installation through theChamilo *Administration* page, **except** for the *Encryption method* and the *Portal URL.*

*Encryption method* is almost impossible to change afterwards as it would imply re-generating new passwords for all users and sending them by e-mail. The default option is always the most secure, so we recommend you **leave it** as it is.

*Portal URL* could be updated but only through the configuration file, which could prove tricky. Please select these two wisely.

* *Main language :* default language on your portal.
* *Chamilo URL :* URL of your Chamilo portal (locally : <http://localhost/chamilo>; remotely : <http://www.mydomain.com/chamilo>).
* *Admin's e-mail :* portal administrator's e-mail contact address (or support team)
* *Admin's first name and last name :* will be shown in the footer as the link to the admin's e-mail address. You can put any information there, like “Support team” as an example.
* *Admin's login and password :* **IMPORTANT** – will allow you to connect to your portal as administrator later on. One option is to set a global functional admin account here (named “admin”) and have multiple people use that account. It is, however, recommended to create a more personalized account for each administrator (so this first one should be yours), to be able to keep track of all actions taken by other administrators.
* *Portal's name and organisation's short name :* will be visible, only in specific visual themes, in the top left corner of the page (on all pages).
* *Encryption method :* hashing and cryptographic functions that will be used to secure the users passwords in your database. We recommend (and select by default) the most secure one available in Chamilo: SHA1.
* *Self registration :* will allow user to register alone; set to *No* for a private portal.
* *Self registration as teacher :* will allow user to register alone as a teacher; only taken into account if the previous setting is set to *Yes*. This will allow new users to register as teachers, and thus to create new courses.

**Note** : The user defined on this screen will have full administration permissions. He will be able to update the settings on this page afterwards.