A network device connected to the Student Village Network is a part of the University computer network, and the connection holder is responsible for making sure his connection is not used in a manner that disturbs other users. If the IT Management finds that a network device is causing trouble in the network (such as spreading viruses or participating in denial-of-service attacks), the connection gets closed either for a certain period or indefinitely. The best way to avoid this is to keep your virus protection up-to-date and not install any suspicious software. It is also prohibited to use network scanners, packet generators or any other software that interferes with network traffic. Users that try out hacker tools as such, will get their connection banned in a hurry.

Communication between the subscribers and the network administrators is handled mainly by e-mail. Therefore it is vital that the subscriber's working e-mail address is known to IT Management at all times. If your e-mail address changes, immediately notify the Student Village Foundation. If IT Management notices that a subscriber's e-mail address no longer works, the connection can be closed until a new address has been reported (see contract terms, part 5).

Basic rules list

• Do not connect ADSL-devices to the network! These devices are prohibited in Student Village Network.
• Do not set your IP address manually! Manual settings will cause duplicate IP addresses in the network, and will eventually get your connection closed.
• Do not use any network scanners or hacking tools! Even probing the network topology is considered as an hostile action.
• Do not activate any network hosting services, unless you really know what you are doing. Any server you might install is only for personal use. Hosting services to the public is not allowed.
• If you are using a router, make sure you connect it correctly and secure the wireless with encryption. Also check that your router is not in the forbidden devices list.

Network security

University of Turku cooperates with the Finnish national Computer Emergency Response Team (CERT-FI) and Funet/CSC. In some cases IT Management might forward messages from these sources to individual users on Student Village Network. Usually this it is because a threat to communications (networms, botnet zombies etc.) is detected on a users connection. There is no need to panic if this happens, it mearly indicates that the threat has been detected and caught in time. In extreme cases a connection might need to be quarantined, this however is not a punitive measure, mearly a precaution to limit the threat from spreading to other devices on the network.

Bandwidth

The Student Village Network is intended for use of supporting studies, teaching and research. Other use, though permitted, does not have such a high priority, and may be limited. The bandwidth available in the Student Village Network is 100Mbps for each connection. This is sufficient for normal Web surfing, online gaming, e-mail and moderate amounts of downloading, but massive downloads going on all the time can quickly fill the pipe in any network. Excessive bandwidth usage is disruptive to other users and can in extreme cases lead to temporary suspension of the Student Village Network connection.

Penalties

IT Management penalises connections if the computer used in the Student Village Network connection is discovered to cause disruptions to the functionality of the network or breaking the network usage rules. The most common offences are setting IP address manually, network scanning and denial of service attacks. Ignorance, accident or other non-intention are not mitigating circumstances.

The lengths of the penalties are as follows:

• First offence: a week
• Second offence: a month
• Third offence: contract terminated

For the distribution of illegal material the connection stays closed until the matter has been handled.

Disconnections

The connection is closed temporarily if the e-mail address informed to the TYS housing office ceases to work. See contract rules §5 In this case the connection can be opened by informing TYS office a new working email address.

Limitations

The connection can be quaratined from the rest of the network, in case the computer is spreading viruses, a part of a botnet or otherwise compromised. Network connection will remain in quarantine, until the user has removed the viruses and been in contact with the administration.