- 100Mbit / 1000Mbit Ethernet (fixed network)
- Wireless Wi-Fi (IEEE 802.11a / g / n) they manage Access Points RouteBoard (ESSID wlan_fi) covering almost the entire faculty area
As a freshly arrived member of the faculty network (any of the connectivity types), first obtain IP / DNS data for your network interface using DHCP. You still only have access to faculty DNS servers and to HTTPS (this time not HTTP) on fadmin.fi.muni.cz. Take advantage of them and open the web browser page https://wifi.fi.muni.cz . After successful authentication, all notebooks should be included in the faculty network and the Internet. In the Terminology of the Faculty administration, "your IP address was activated".
Upon activation, access to the Internet is enabled from the assigned IP address. The faculty network behaves like any other computer in the outside world. So all FI services should work, for example, if you are connected via any other Internet provider. Some services, on the other hand, will not work - such as disk sharing via NFS and SMB (Windows).
The faculty firewall continually tests whether the enabled computer is still active. If for more than 5 minutes it does not respond to ping (ICMP echo request), the activation of the given IP address is canceled and the user must reactivate his address using the above URL. Keep this in mind when configuring the firewall on your laptop.
In order to maintain Wi-Fi network availability, this limitation applies to a data rate of 4 Mbit / s for each IP address.
Note that all communications pointing to / from your computer is intercepted on intermediate network elements, so use encrypted protocols (such as HTTPS, IMAPS, POP3S, SSH) instead of dangerous, unencrypted (IMAP, POP3, FTP , HTTP). This problem is particularly hot when you connect to a wireless network: any network traffic on your computer is transmitted not only to you but also to all wireless network participants on that access point. Hardware-level encryption (such as WEP) is not enabled for faculty Wi-Fi access points due to lack of reasonably strong cryptography support.
In this context, we also invite you to be collegiate with other network participants: Provide your system with sufficient protection software to prevent your computer from infecting viruses and similar pests that will, without your knowledge, abuse the faculty network to send spam, hacker attacks to surrounding computers, This is especially true for Windows users. Keep all of your software up to date: a security incident can also happen through unexpectedly hidden, dazed paths.
It should be added that if your laptop starts to report unwanted network activity (for example, scanning the ports of nearby computers due to an incoming virus), it will not only be disconnected from the faculty network, but you will also be forbidden to access the faculty network from the laptop ) for one week or more.
Lastly, we recommend that you do not save the password for the Faculty Administration in a web browser or any script (for example, to facilitate the activation of the IP address). In the past, an error has been discovered several times in one of the regular browsers, which prevents the bad web browser programmer from extracting the stored passwords, of course without your knowledge. Misusing your account at FI can cause irreparable difficulties.