The only way to reliably secure a computer from network dangers such as hacking and viruses is to disconnect it from the network. Since it is not possible to do this and provide network services, CPS has taken steps to mitigate network threats both physical, virtual and legal. Among these steps is the blocking/restricting of ceratin network services and protocols. Following is a list of explicitly denied/restricted network services and protocols. This list is by no means exhaustive and is subject to change. If you have questions about what these terms mean or the policies set forth, please contact Paul Wright in Information Technology Services.

CPS does not support peer-to-peer (P2P) file sharing.
P2P file sharing opens up CPS and CPS network users to possible legal action by computer file copyright owners and increases the likelihood of computer virus contamination.
Where possible P2P protocols are blocked both into and out of the CPS network. Blocked P2P services include (but are not limited to) AudioGnome, OpenNap, AudioGalexy, BitTorrent, EDonkey, KaZaA, Napster, DirectConnect, Gnutella, PeerEnabler, Winny and Blubster.

CPS does not support Windows NetBios outside of the CPS network.
NetBIOS ports-which are required for certain Windows network functions such as file sharing--
provide doorways to vulnerabilities which are widely used to break into systems and exploit them in various ways.
NetBios protocols are blocked both into and out of the CPS network.

CPS does not support ICMP (ping) outside of the CPS network.
Ping, a commonly used network diagnostic tool is also used by certain viruses to contact and infect other computers.
ICMP (ping) is blocked both into and out of the CPS network.

CPS does not support mail servers other than the official CPS GroupWise mail server.
Recent viruses try to exploit vulnerabilities in desktop operating systems and propagate themselves via mail protocols.
SMTP, POP3 and IMAP protocols are blocked both into and out of the CPS network.

CPS offers limited bandwidth for streaming media.
Streaming media such as RealAudio or Windows Media Player use large amounts of Internet resources and have been found deteriorate network performance for other legitimate educational resources.
If your school/location has an educational use for streaming media please contact Paul Wright to have restrictions adjusted to allow specific streaming connections.

CPS does not support online multiplayer gaming.
Where possible online multiplayer gaming protocols are blocked both into and out of the CPS network.