The University now has a Palo Alto firewall which filters traffic into and out of the network, to avoid various dangers to users here and elsewhere:
The first of these is undetectable to anyone using the network. However, the others are more noticeable. This is what will happen in each case:
This describes how the page was categorised, and what that means. If you think the page has been mis-classified, contact the Service Desk. If the page seems to be harmless, we can remove the block on it quickly.
On the Personal networks (wireless and Residences) we block access to peer-to-peer sites because the vast majority of these are used to distribute material in breach of copyright. This leads to complaints from the agents of the copyright holders, which damages the University's reputation and takes up support time which could be better used. If the material you are trying to obtain is not restricted by copyright, there will normally be ways of accessing it not using peer-to-peer transmission.
If you try to access one of these sites, you will see this page:
If your system is blocked in this way, you will only be able to see pages on University web sites and email. If you try to access any other page you will get this page:
On the Personal networks (wireless and Residences) we no longer check that users are running anti-virus software on their systems. This could expose them to the possibility of infection. As a result we block access to files that appear to contain viruses, based on a signature database on the firewall. If a file you are trying to download through the web appears to contain a virus, you will see this warning:
If you are using a File Transfer (FTP) client to download the file, you won't get any notification, because the transmission system doesn't provide one, but you will get an error reported.
If you think a file that has been blocked is actually innocuous, please contact the Service Desk. We can obtain a copy of it and check it for viruses ourselves. If it turns out to be harmless, we can quickly add an exception to the virus policy.