Network Connection Conditions
The prime purpose of the network connection is the furtherance of your
academic studies. Whilst recreational use is not forbidden, it is not supported
and is subject to more restrictions than academic use. The Faculty makes
no commitment to ongoing toleration of recreational use. Having a network
connection available does not give you carte blanche to do anything, particularly
as some of your actions might cause charges to fall on the Faculty. The
Faculty reserves the right to charge for excessive use and/or inappropriately
configured machines.
The user is responsible for purchase, installation and commissioning
of ethernet equipment and software drivers (etc) which support an ethernet
10baseT connection, including the cable from the wall socket to the computer.
The user is also responsible for the correct configuration of networking
software and web browsers on the computer. (see Configuration
below)
Use of the network socket by the user is subject to the following rules.
Some rules change from time to time and will not be reproduced here: current
URLs are indicated as references:
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a. Rules made by the IT Syndicate of the University of Cambridge:
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http://www.cam.ac.uk/CS/ITSyndicate/rules.html
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b. Guidelines on interpretation of the above rules:
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http://www.cam.ac.uk/CS/ITSyndicate/guidelines.html
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c. Rules relating to the use of IP addresses in the University of Cambridge:
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http://www.cam.ac.uk/CS/IPcond.html
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d. Guidelines for World Wide Web Information Providers in the University
of Cambridge:
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http://www.cam.ac.uk/CS/ITSyndicate/WWWguidelines.html
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e. The CUDN Acceptable Use Policy:
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http://www.cam.ac.uk/CS/ITSyndicate/cudnrules.html
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f. The JANET Acceptable Use Policy:
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http://www.ja.net/documents/use.html
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g. That the user agrees and consents to statistical data being gathered
on their network usage, including identification of remote sites and traffic
volumes to or from those sites. This data may be used for (a) network administration;
(b) advice to or cautioning of that user; (c) possible charging for excessive
use. This data may be shared between the network administrators of the
Faculty and of the University.
h. The following local rules:
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The good name of the Faculty shall not be brought into disrepute.
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The user's web browser must
be specially configured to use the Cambridge Web Proxy Cache (except
between 01:00 and 06:00 at night, when use of the proxy cache is optional).
[Explanation: this ensures that your web browsing will not cause traffic
charges to be made on the Faculty].
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The user's news-reader must be specially configured to use the Cambridge
news server (except between 01:00 and 06:00 at night, when other servers
may be used). [Explanation: this ensures that your news-reading will not
cause traffic charges to be made on the Faculty].
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Except between 01:00 and 06:00 at night, all FTP fetches must be done by
use of a web browser configured to use the Cambridge Web Proxy Cache if
the transfer would be chargeable on the transatlantic link.
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Except between 01:00 and 06:00 at night, the use of high-bandwidth applications
(such as streaming audio, streaming video, internet phone/video/conferencing,
Real Player, QuickTime audio/video, Microsoft Media Player, Net Meeting
and so on) is forbidden if they would cause chargeable traffic on the transatlantic
link.
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It is forbidden to run Napster, Gnutella or similar programs as servers.
Normal mortals can now skip to the end of these numbered paragraphs.
Advanced users should read on.
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Promiscuous mode reception or any other form of network traffic monitoring
is forbidden.
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User machines are forbidden to saturate the network by emitting an unreasonably
high frequency of packets, or to attempt any other form of denial of service
to others.
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Only the IP number issued by Faculty shall be used on the socket specified.
No spoofing or attempt to use other IP numbers on that socket is permitted.
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Only the DNS name issued by the Faculty shall be used. Users are not permitted
to register their IP number with other DNS names or aliases.
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It is forbidden to emit e-mail or news articles with false headers.
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It is forbidden to emit e-mail or news articles with headers advertising
that the client machine is an e-mail host. "From" and "Reply-To"
headers must indicate an official host on which the user has an e-mail
account, or be an @cam.ac.uk address.
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Electronic mail may not be emitted other than via official SMTP mail servers
in the .cam.ac.uk domain, such as Hermes, or other University machines
which you have been authorised to use. It is generally expected that outward
e-mail will be emitted via the SMTP server on the machine on which the
user has an inward e-mail account.
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Usenet news articles may not be emitted other than via the University news
server.
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Inward e-mail to private SMTP (e-mail) servers is not permitted.
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Private NNTP (news) servers are not permitted.
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Private routing daemons are not permitted.
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IP packet forwarding is forbidden (note that you might have to explicitly
turn off IP forwarding with some versions of Linux).
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Where a user machine offers a permitted service to the network, the service
thereby made available must comply with relevant acceptable use policies.
For instance, if a Telnet service is offered, it must not offer general
computing resources to persons calling from outside the *.cam.ac.uk domain
unless the usage complies with the Janet AUP, and it must not offer resources
to persons outside Faculty unless it complies with the CUDN AUP. Information
services (such as web pages) must not carry advertising, must not carry
information on behalf of commercial bodies, and should not carry information
on behalf of bodies unaffiliated with the Faculty or the University of
Cambridge - please ask if you wish to clarify particular cases. See also
http://www.cam.ac.uk/CS/ITSyndicate/WWWguidelines.html#Frame
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The Faculty reserves the right to require (in cases where it is possible)
that client computers run certain responder software when on-line, and
that such responders shall not respond with false information. In particular,
computers capable of running a "finger" service must do so.
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It is forbidden to launch or copy applications which are subject to commercial
copyright restrictions and licensing unless the client user is in possession
of a valid licence for that application.
The penalty for breach of these rules is permanent disconnection.
Please note the general prohibition on causing chargeable traffic on
the transatlantic link. For the ordinary user it is very difficult to predict
whether communicating directly with any given host name would use the transatlantic
link. An ultra-safe rule is to assume that all sites other than those with
names ending in .ac.uk or .ja.net might use the transatlantic
link. You cannot assume that other .uk sites will not use the link:
there are many that do. Advanced users can use the traceroute or
tracert
command to check specific host names: if a route includes a name containing
the word teleglobe, then it is using the transatlantic link. Ordinary
users may rest assured that their web browsing will be free of charge provided
that (a) their web browser is configured in accordance with the above rules,
and (b) that the pages they view contain only static information - pages
that contain audio or video clips will normally be chargeable. E-mail is
free of charge to or from anywhere in the world. News-reading is free of
charge provided that you use the Cambridge news server.
The prohibition on causing chargeable traffic on the transatlantic link
extends to all high-bandwidth (audio, video) or high-volume (web, FTP,
news-reading) applications. Instant Messaging (chat) applications (such
as ICQ, AIM, and so on) all use the transatlantic link to communicate with
their master servers (to register you on-line or off-line, and allow you
to see who else is on-line) regardless of whether you chat only with other
users in Cambridge. Usage of the transatlantic link by ICQ or AIM clients
is relatively low bandwidth, providing you do not use your clients to play
background music, video, or download files. Instant Messaging is regarded
as recreational and its use of the transatlantic link is not
approved but will be reluctantly tolerated for messaging
only until such time as the costs get out of hand, when it might be
necessary to prohibit it. Usage of Instant Messaging clients for purposes
other than messaging is subject to the same restrictions as those applying
to high-bandwidth or high-volme applications.
Computer games and other recreational activities which use the network
are not approved, but will be reluctantly tolerated so long
as other network use is not affected. Recreational use which loads the
Faculty's link to CUDN, or the University's link to Janet, is particularly
sensitive and likely to attract sanctions. It is forbidden to host
games servers which advertise their presence to players outside .cam.ac.uk.
Registration
All registration requests should be made to the Faculty Computer Officer,
not to the University Computing Service. In particular you will need to
supply to him:
(1) the number of the network point at your desk and/or the room number
(2) the physical (MAC) address of your machine.
In Windows NT, 2000 or XP you get this by:
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Click Start, then Programs, then Accessories, then Command Prompt
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Type: ipconfig /all
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Look for the Physical Address of the Adapter (in the form of 12 hexadecimal
digits each pair separated by '-': e.g. 12-34-AB-F4-E1-4C)
In Windows XP/Vista do this:
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Click Start, then Run
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Type:cmd
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In the windows that appears type" ipconfig /all" . You will information about your hardware, including the MAC address, on a line such as
"Physical Address..... 00-14-23-36-A4-BC "
Configuration
IP Address: set to obtain automatically, subnet mask is 255.255.255.0
Workgroup: econ-wk
Wins: disable
No login domains (no Windows NT server)
