CESNET FAQ

Answers to your most common questions about CESNET.

Quick, simple, and helpful information at a glance.

What is CESNET?
CESNET (Czech Education and Scientific Network) is the national research and education network of the Czech Republic.
How do I connect to CESNET?
Generally, users connect to CESNET through their institution, which is a member of the network. Otherwise, one can connect through a third-party provider.
Why am I unable to access certain websites when connected to CESNET?
Access to specific websites may be restricted for security reasons or due to network issues. Please contact your institution's IT department for assistance.
Why is my internet connection through CESNET slow?
Slow internet connection can be caused by various factors such as network congestion, server issues, or hardware problems. Try troubleshooting your equipment first, and if the issue persists, contact your institution's IT department.
I am experiencing internet disconnections while using CESNET. What should I do?
Check your device's internet connection and try restarting your equipment. If the issue persists, contact your institution's IT department for further assistance.
Why am I receiving a "page not found" error when accessing a website through CESNET?
This error could be due to a mistyped URL, server issues, or network restrictions. Double-check the URL and try accessing the website using a different device or network. If the issue persists, report it to your institution's IT department.
Can I use CESNET outside of the Czech Republic?
CESNET is primarily used within the Czech Republic, but some international collaborations may allow access outside of the country. Contact your institution's IT department for more information.
Are there any usage restrictions when using the CESNET network?
Yes, users are expected to follow the applicable laws and policies regarding responsible internet usage. Please refer to your institution's acceptable use policy for more information.
Why am I seeing a "connection timed out" error when accessing a website through CESNET?
This error may indicate network congestion or server issues. Try accessing the website at a different time, or contact your institution's IT department for further assistance.
Can I use CESNET for personal or non-academic purposes?
CESNET is primarily used for academic and research purposes. Personal use may be allowed in some cases, but users are expected to follow the institution's policies and guidelines.
I am experiencing issues when accessing online resources through CESNET. What should I do?
Check if the resource is accessible through a different network or try using a different web browser. If the issue persists, contact your institution's IT department for assistance.
Why am I receiving a "server not found" error when trying to access a website through CESNET?
This error could be due to a misconfigured server or network issues. Try accessing the website at a different time, or report the issue to your institution's IT department.
Can I use a virtual private network (VPN) while connected to CESNET?
It is generally recommended to avoid using a VPN while connected to CESNET as it can cause conflicts and connection issues. However, users can consult with their institution's IT department for further guidance.
Are there any security measures in place when using CESNET?
Yes, CESNET implements various security measures to ensure the safety of its users and network. Users are also advised to follow best practices for secure internet usage.
How do I report a security issue or network problem while using CESNET?
Users can report any security issues or network problems to their institution's IT department or contact CESNET directly at [email protected].
Why am I seeing a "certificate error" when accessing a website through CESNET?
This error can occur when a website's security certificate is expired or not properly configured. Contact your institution's IT department for further assistance.
Can I use CESNET for file sharing?
Depending on the nature of the file sharing, it may not be allowed as it can pose security risks for the network. Users should consult with their institution's IT department for guidance.
I am unable to connect to the CESNET wireless network. What should I do?
Make sure your device's wireless connection is turned on and try restarting your equipment. If the issue persists, contact your institution's IT department for further assistance.
Why am I receiving a "connection refused" error when trying to access a website through CESNET?
This error could indicate that the server is currently unavailable or your institution has blocked access to that particular website. Contact your institution's IT department for further information.
Is there a limit on the amount of data I can transfer through CESNET?
CESNET does not have a specific data transfer limit, but users are expected to follow fair usage practices and not excessively consume network resources.
Why am I seeing a "file not found" error when trying to download a file through CESNET?
This error could be due to a broken link or the file no longer being available. Double-check the URL and try downloading the file at a different time. If the issue persists, contact your institution's IT department.
Can I use CESNET for online gaming?
CESNET is not specifically designed for gaming purposes, and users are advised to use alternative networks for gaming activities.
Why am I unable to access certain library resources through CESNET?
Access to library resources may be restricted to specific users or institutions due to licensing agreements. Contact your institution's library or IT department for further assistance.
Can I set up a personal website through CESNET?
CESNET is primarily used for academic and research purposes, and personal websites may not be allowed. Consult with your institution's IT department for further guidance.
Why am I receiving a "DNS server not responding" error when trying to access a website through CESNET?
This error can occur due to network issues or incorrect DNS settings. Restart your equipment and try again. If the issue persists, contact your institution's IT department for further assistance.
I am experiencing issues with my video conferencing software while connected to CESNET. What should I do?
Check your internet connection and try using a different video conferencing platform. If the issue persists, contact your institution's IT department for further assistance.