Restrictions of the Self-Maintained Network

The laptop and self-maintained networks are all behind firewalls. An overview of the network connectivity permitted on these networks is outlined below. A more detailed description of the network and firewall configurations can be found in the School's Security Policy.

The laptop and self-maintained networks provide:

  • Access to the Web via the School's proxy server
  • Access to the School's POP, IMAP and SMTP servers (for use with school e-mail accounts)
  • Access to the School's FTP* server
  • Printing via the School's CUPS print server
  • Access to files via the School's Windows servers
  • SSH and Telnet* access to compute servers
  • The same connectivity (SSH, FTP*, Telnet*, etc...) to external hosts that is available from lab and office workstations
  • Incoming SSH connections from hosts within the School i.e. the ability to connect to your machine from another host within the School (providing your machine has been configured to accept SSH connections).

(*) It is not recommended to use protocols such as FTP and telnet which send passwords in clear text (FTP should only be used for anonymous sessions e.g. downloading software from external FTP sites). Instead, we encourage users to use SSH as a safe and secure alternative when connecting to the School's servers.

Note: It is possible to extend the network connectivity by configuring SSH tunnels. For example, establishing connections with the School's database servers or tunnelling X traffic to run X applications remotely.