Useful technical information about Neptun | Neptun Study System

• Google Chrome
• Microsoft Edge
• Mozilla Firefox

Before registering for subjects, courses and exams, we recommend that you clear the cache of your browser. Students' Neptun access is served by several web servers, and browsers store browsing history and settings. Thus, without clearing cache, it may happen that you try to log in to a previously saved but currently overloaded server. You can clear the cache as described below (for different browser types).

1. Open Google Chrome on your computer.
2. Click on Customize and control Google Chrome (three vertical dots in the upper right corner). Within this, select the Settings menu item.
3. Click on the Privacy and security menu item.
4. In the Delete browsing data group, choose All time from the Time range drop down list. We recommend that the Cookies and other site data and Cached images and files options are selected.
5. Click Delete data.

After completing this operation, your browser will log you out from all sites you previously logged in. You can use Neptun's interface again.

1. Open Microsoft Edge on your computer.
2. Click on Settings and more (three horizontal dots in the upper right corner). Within this, select the Settings menu item.
3. Click on the Privacy, search, and services menu item.
4. In the Delete Browsing Data group, click on Choose what to clear.
5. Select All time from the Time range drop down list. We recommend that the Cookies and other site data and Cached images and files options are selected.
6. Click Clear now.

After completing this operation, your browser will log you out from all sites you previously logged in. You can use Neptun's interface again.

1. Open Mozilla Firefox on your computer.
2. Click on Open application menu (three horizontal lines in the upper right corner). Within this, select the Settings menu item.
3. Click on the Privacy & Security menu item.
4. In the Cookies and Site Data group, click on Clear Data.
5. Select Everything from the When drop down list. We recommend that the Cookies and site data and Temporary cached files and pages options are selected.
6. Click Clear.

After completing this operation, your browser will log you out from all sites you previously logged in. You can use Neptun's interface again.

If you use a firewall, requests to the HTTP (TCP/80) and HTTPS (TCP/443) ports must be allowed. If a proxy server is used, traffic to these ports must also be allowed on the proxy.

To access protected web pages, web servers use certificates that browsers can only verify if we install the CA's certificate as one of the top-level trusted CAs. Protected pages can also be accessed without a certificate from the authentication provider, only in this case we will receive a warning message that the browser does not consider the given page as a trusted site.

CA certificate:  TERENASSLCA.pem

The display shows what percentage of the maximum number of students are logged in on the student web servers. The value is updated every 1 minute. Depending on the load, the color of the indicator changes:

A green signal means that the servers are not busy, the service is fast.

In case of a yellow signal, many people are logged in, the load on the servers has increased, there may be some temporary slowdown.

If there is an orange signal, there are many people logged in, the service may slow down, so please be patient, the system is under load!

In case of a red signal, the number of registered users is approaching the maximum value! It may happen that you can only log in after several attempts, the servers are overloaded!