The diagram below illustrates the web services available in the Department of Computing.

As the diagram above shows, the department uses three servers; a back-end file-server (Moya), which is used to hold the deployed web-content, and two front-end web-servers (ComputingWS1 and Igor), which serve the various types of content to the World Wide Web.

The back-end file-server, Moya, holds your home directory (equivalent to the G: drive on our lab computers) and this contains the public_html and windows_html directories that contain your deployed web-content. Your home directory is mapped to igor and it is to igor that you should transfer your files when using FTP (or similar) to upload your content. It is not necessary to connect to Moya directly.

Both front-end servers run a standard web-server on port 80 (IIS on ComputingWS1, Apache on Igor) and also an Apache Tomcat servlet engine on port 8080. Igor also has a 'tunnel' which connects two of its own ports to the IIS/Tomcat ports on ComputingWS1, which allows you to access pages served by ComputingWS1 indirectly via Igor. This is particularly useful for accessing Tomcat on ComputingWS1, since port 8080 on that server is blocked by the college firewall and so is not directly accessible from outside the college.

Thanks to its tunnels, Igor is able to act as a front-end to both its own services and to the services provided by ComputingWS1. You can select the service you want to use by specifying the port number in your URL. Alternatively, you can select a service by including the relevant base path, as shown in the diagram. For example, the following URL's are all equivalent for accessing IIS on ComputingWS1:

  http://win.doc.gold.ac.uk/ma001abc/index.html

  http://www.doc.gold.ac.uk:2000/ma001abc/index.html

  http://www.doc.gold.ac.uk/win/ma001abc/index.html

Note that when accessing all services except IIS, a tilde (~) must be specified before your username (eg. ~ma001abc).