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Connection to Wi-Fi network of JU

Step 1: Activate the wireless network on your laptop

Make sure that the wireless network is enabled. Most laptops have a physical switch or a keyboard shortcut to turn the wireless interface on or off. You can activate this function by pressing the corresponding key or button.

Step 2: Find available Wi-Fi networks

Click the Wi-Fi icon in the bottom right corner of the screen (Windows) or at the top of the screen (macOS). This will display a list of available Wi-Fi networks within range. You should be on the USB campus, where the EDUROAM Wi-Fi network is available.

Step 3: Select a network to connect to

Click on the EDUROAM Wi-Fi network name. Keep in mind that EDUROAM is a secured network, and you will need to enter a username and password.

Step 4: Enter your password

Enter your username in the format: This email address is being protected from spambots. You need JavaScript enabled to view it. and the password you set up in the IDM portal. If you have not set a password yet, go to the section Password settings, freeradius password, and university e-mail, which you can find on this page.

Step 5: Wait for connection

After entering the password, wait until your laptop successfully connects to the network. You can confirm this by checking the Wi-Fi icon, which should indicate that you are connected.

Step 6: Test the connection

To verify that you are successfully connected to the internet, open a web browser and load any webpage.

By following these steps, you should be able to connect your laptop to the Wi-Fi network. Please note that the procedure may vary slightly depending on your operating system and specific device, but in general these steps cover most situations.

Connection Issues on Mobile Devices:

Modern mobile operating systems (especially Android 11 and newer) automatically block the connection if they are missing the correct security certificate or authentication domain, even if your password is correct.
Here are the 3 most common reasons why authentication fails despite having the correct credentials, and how to fix them:
1. The phone requires filling in the "Domain" field (A frequent Android issue)
If you configure the network manually and enter your username and password, the "Connect" button may remain greyed out, or the phone might disconnect you immediately with an authentication error message.
  • Solution: Go to advanced Wi-Fi settings and find the Domain field. You must manually type in your school's authentication domain (jcu.cz).
  • Note: For the CA Certificate option, select Use system certificates.
2. The old cache needs to be cleared (Stuck profile)
The phone can store an outdated configuration or an invalid security key in its memory, continuously attempting to authenticate using the old method.
  • Solution: Go to your phone's Wi-Fi settings, long-press the eduroam network, and select Forget network (or Remove network). Then, turn Wi-Fi off and back on, and try logging in again.
3. Blocking due to a Randomized MAC Address
For privacy reasons, some phones generate a fake (randomized) hardware MAC address every time they connect. School eduroam servers often block this behavior for security reasons and will refuse to authenticate you.
  • Solution: In your phone settings, click the gear icon (details) next to the eduroam network. Find the MAC address type (or Privacy) option and change it from "Randomized MAC address" to Device MAC address (or Phone/Original MAC address).

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Contacts

Koleje a Menzy
Jihočeská univerzita v Českých Budějovicích
Studentská 800/15
370 05 České Budějovice
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
IČ:     60076658
DIČ:  CZ60076658

All contacts
Branišovská 1645/31a, 370 05
České Budějovice Tel.+420 389 032 191 This email address is being protected from spambots. You need JavaScript enabled to view it. www.jcu.cz
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