Connectivity - ADSL, ADSL2+, FTTC, G.Fast, FTTP and Ethernet Services

1.    Introduction

1.1.    The following list details all the uses of Cerberus Networks’ (“Cerberus”) Internet services that we consider unacceptable - in other words, unfair usage. Cerberus maintains and promotes a policy of fair and acceptable usage at all times, so please ensure that any use of Cerberus services, by yourself, your customers (if you are a reseller), or anyone in your household or office abides by the restrictions listed below.
1.2.    Please ensure that anyone who uses your Cerberus Internet service agrees with this Policy and is aware of their obligations under it. This extends to your employees or office workers, members of your household, children, guests and any one accessing the network through your home or office.

2.    What can Cerberus services not be used for?

2.1.    Unlawful, fraudulent, criminal or otherwise illegal activities
2.2.    Sending, receiving, publishing, posting, distributing, disseminating, encouraging the receipt of, uploading, downloading or using any material which is offensive, abusive, defamatory, indecent, obscene, unlawful, harassing or menacing or a breach of the copyright, trademark, intellectual property, confidence, privacy or any other rights of any person
2.3.    Commercial purposes (unless you are a Home or Standard customer who is working from home as a sole trader in business on your own account or a Business customer in which case see below for limits on certain types of commercial use)
2.4.    Sending or uploading unsolicited emails, advertising or promotional materials, offering to sell any goods or services, or conducting or forwarding surveys, contests or chain letters except that Home or Standard customers working from home as a sole trader in business on their own account or Business customers are permitted to send marketing communications in accordance with the Privacy and Electronic Communications Regulations 2003 if sent in batches of no more than fifty (50) emails at any time, each individual campaign being sent to no more than five hundred (500) recipients, with no more than five (5) campaigns per month
2.5.    Knowingly or negligently transmitting or uploading any electronic material (including, without limit, files that contain viruses, corrupted files, or any other similar software or programmes) which is known or likely to cause, interrupt, damage, destroy or limit the functionality of any computer software, hardware or telecommunications equipment owned by Cerberus or any other Internet user or person
2.6.    Activities that invade another’s privacy, cause annoyance, inconvenience or needless anxiety to any person
2.7.    Activities that are in breach of any other third party’s rights, including downloading, installation or distribution of pirated software or other inappropriately licensed software, deletion of any author attributions, legal notices or proprietary designations or labels in any file that is uploaded, falsification of the origin or source of any software or other material
2.8.    Anything that may disrupt or interfere with Cerberus’s network or services or cause a host or the network to crash
2.9.    Launching “denial of service” attacks; “mailbombing” attacks; or “flooding” attacks against a host or network
2.10.    Granting access to your Cerberus services to others not residing at (for Standard or Home) or located at (for Business) the premises at which these Internet services are provided
2.11.    Making excessive use of, or placing unusual burdens on, the network, for example by sending or receiving large volumes of email or excessively large email attachments
2.12.    Circumventing the user authentication or security process of a host or network
2.13.    Creating, transmitting, storing or publishing any virus, Trojan, corrupting programme or corrupted data

3.    What about security?

3.1.    You are responsible for ensuring that any confidential account information held by you remains confidential so that the network cannot be used by any unauthorised person.
3.2.    The Account information referred to includes, but is not limited to, those controlling access to (a) any computer hardware systems or networks; (b) any computer software or applications; or (c) any other services accessed by you in the use of either of the above.
3.3.    You shall not disclose any account information to any third party, or use the same for any purpose connected with the improper use of the network including accessing or attempting to access other parts of the services for which you do not have access rights. You are responsible for taking all reasonable steps necessary to prevent a third party obtaining access to the network. You must immediately advise us if you become aware of any violation or suspected violation of these Security provisions.

4.    What about usage by others without you knowing?

4.1.    You are responsible for all uses made of Cerberus Internet services through your account (whether authorised or unauthorised) and for any breach of this Policy whether an unacceptable use occurs or is attempted, whether you knew or should have known about it, whether or not you carried out or attempted the unacceptable use alone, contributed to or acted with others or allowed any unacceptable use to occur by omission. You agree that Cerberus is not responsible for any of your activities in using the network. Although the Internet is designed to appeal to a broad audience, it’s your responsibility to determine whether any of the content accessed via Cerberus’s Internet service is appropriate for children or others in your household or office to view or use.

5.    Anything else you should know?

5.1.    Cerberus does not accept the sending of spam email through its services and reserves the right to block any emails that have the characteristics of spam. You’ll be contacted by Cerberus if any emails sent by you are blocked for this reason. Any spamming activity may result in suspension or termination of your service at Cerberus’s option and sole discretion.

6.    What about excessive network usage?

6.1.    Where services are supplied with an unlimited monthly usage policy, and it is determined that any customers Internet activities are so excessive that other customers are detrimentally affected, Cerberus may give the customer generating the excessive traffic a written warning (by email or otherwise). In extreme circumstances, should the levels of activity not immediately decrease after the warning, Cerberus may terminate that customer’s services.
6.2.    Services subject to a monthly usage allowance will be billed at the rate of £1 per GB of additional data use over and above the allowance for that month.

7.    What happens if the Policy is breached?

7.1.    If any customer’s use of these services constitute a breach of this Policy, Cerberus may, at its option and discretion, either give the customer notice to stop the unacceptable use(s) or terminate that customer’s services (with or without notice as Cerberus considers appropriate).
7.2.    To report any illegal or unacceptable use of Cerberus services, please send an email to

Email and Email Filtering Services

Cerberus Networks provides a free SMTP relay server for our Internet connectivity customers, There are a few restrictions on the server designed to protect the service from abuse in order to provide uninterrupted service to all of our customers.

1. SMTP3 is running SpamAssassin, configured to block messages that are obviously spam. Your mail client or mail server will log an error explaining this if you inadvertently try to send a mail that contains a very large number of spam-like characteristics.

2. SMTP3 is also rate-limited to prevent virus outbreaks, for example, from getting the entire server blacklisted. The limits are high so that you are able to send legitimate marketing mails, but you will be rate-limited if you go over the limit which is set at 500 mails per hour, with a total of 3000 mails allowed over an 8 hour period.

3. SMTP3 will accept a maximum of 100 recipients per message, and a maximum message size of 25MB.