You can use such resources at home or even from overseas. Access from Off-campus Almost all electronic resources are available for remote access, including the Library Catalog, databases, electronic journals and electronic books. The proxy server is called EZProxy.
URL rewriting is a function of EZproxy. Users have several options for how URLs will be written, learn more about the options and how to select one.
Background For the purpose of this document, the term proxy server is narrowed in scope to refer only to proxy servers between web browsers and web servers. One of the original goals of web proxy servers was to accelerate access and conserve bandwidth.
Browsers were configured to direct all their outgoing requests to the proxy server. The proxy server received all requests for documents, and when possible would maintain local copies of these documents after they were retrieved.
As people accessed common web sites, the proxy server could immediately return documents from its own cached copies, avoiding the need to send every request out over the institution's link to the Internet. Not only were these common documents retrieved faster, but requests for other documents were also processed more quickly since the Internet link was no longer bogged down retrieving the common documents.
When a browser makes a request through a proxy server, the web server receives the request from the proxy server, not the user's workstation. When remote users direct their browsers to use a proxy server, their requests are likewise seen by the web server as coming from the proxy server.
Since many library databases permit access based on the IP address of the request, the use of the proxy server provides automatic authentication for remote users.
From browser to proxy There are three major ways that determine if a browser will use a proxy server: In some network configurations, a network router may be configured to reroute all web traffic through a proxy server. This has the advantage that no browser configuration is required.
When such changes are made without prior announcement, they may also cut off access to specific databases if the proxy server's IP address has not been given to the remote database vendor. Users may be required to configure their browsers to use a proxy server.
For machines at your institution, you may configure all browsers to use your proxy server for all web access. For remote users, it is common to use an autoconfiguration file, which tells the users' browsers which web sites should use your proxy server, so that only requests to your database vendors are routed through your proxy server.
There are three main problems with using a standard proxy server for remote users: URL rewriting proxy servers such as EZproxy require no browser configuration. These proxy servers change the URLs in web pages so that requests for web pages from licensed databases are routed back to the proxy server.
URL rewriting strategies URL rewriting proxy servers use specific strategies to map "real URLs" so the user's browser automatically directs all requests back to the proxy server. For these mapping examples, the rewriting proxy server is called ezproxy. This mapping is simple to follow, and was the first attempted in the first prototype of EZproxy.
Unfortunately, this approach does not adapt itself well to certain standards for web servers, including the handling of certain cookies, so it is of limited value and is inadequate to meet general purpose proxying of library databases. Therefore, it is preferable for proxy solutions to manipulate only the host name portion of the URL www.
Under this strategy, www.
Under this scheme, since represents www. Corporate sites often block access to these non-standard port numbers web server normally use only ports 80 and At institutions that run EZproxy, it may be difficult to configure firewalls to support the range of ports required.
Proxy by hostname To overcome the restrictions of port mapping, proxy by hostname was introduced. Instead of using port numbers to represent remote web servers, unique host names are used. Our sample URL of: This eliminates the non-standard port firewall issues for corporate sites, and simplifies firewall configuration at your institution's site since only one or two ports must be allowed through to the EZproxy server.
It also reduces the resource requirements on your EZproxy server. To support host-name based rewriting, your domain name service DNS administrator must make two entries.
If your EZproxy server used the IP address The first entry is standard, but the second entry is unusual. This second entry indicates that any host name that ends in.Aug 04, · The Library and ITSC have worked together to provide you with secure, authenticated access to our electronic subscription from off-campus computers via the EZProxy server.
You can use such resources at home or even from overseas. Access from Off-campus Almost all electronic resources are available for remote access, including the Library Catalog, databases, electronic journals [ ].
URL Rewriting. A URL rewriting is very important when you are running a community website where user posts articles, forum messages etc. URL rewriting is the process of intercepting an incoming Web request and automatically redirecting it to a different URL.
EZproxy URLs (updated 3/2/) EBSCOhost grupobittia.com?url=grupobittia.com?profile=web EBSCOhost CINAHL Plus. URL Rewriting Middleware in grupobittia.com Core. 08/17/; 16 minutes to read Contributors.
all; In this article. By Luke Latham and Mikael Mengistu.
View or download sample code (how to download). URL rewriting is the act of modifying request URLs based on one or more predefined rules. This article introduces URL rewriting using a data-driven application.