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Applications Services

What are Web Page Steering Scripts?

Special Steering Scripts: Many Brookhaven web pages are now using special steering scripts that determine which web page, local navigation bar or even individual links will be available to the user by way of their computers IP address. These scripts work automatically and if configured and used correctly will provide a seamless web interface to the hosts website.

How do these scripts work? - If web content is going to be available to both the public (world) and internal users to BNL, then this content must be located on the external (www) web server where everyone can access the content. If web content is intended for internal BNL use only, then this content should be hosted on an internal web server behind the firewall. When a user browses to the main external homepage of a site using these special steering scripts, their computer IP address is captured and if it starts with (130.199.) or (192.168.) then the user will be automatically redirected to the sites internal or "intranet" web pages. All others will be redirected to the sites external or public web pages.

If internal BNL users browse to external web content will they get the internal local navigation area? The answer is YES. These special steering scripts not only determine which web page a user can access, but the correct local navigation area as well. External users will only see links in the local navigation area that they can access which creates a seamless web interface that won't confuse or irritate the user. There's nothing more irritating then clicking on links you can't access and get either a error message or some other kind of access denied web page.

Examples:
The sites listed below are using these special steering scripts.

Screen Shots:

Below are computer screen captures of some of the web pages from the Business Systems Division (BSD) website.

The image below shows the External (www) site, accessed by internal users to BNL. The URL is http://www.bnl.gov/bsd/main_e.asp (1). Notice the links in the local navigation area (2). This is the internal local navigation area which allows internal BNL users the ability to access ALL available links.

The image below shows the External (www) site, accessed by users external to BNL. The URL is still http://www.bnl.gov/bsd/main_e.asp (1), but notice the links in the local navigation area (2). This is the external local navigation area which displays only the links that are accessible from outside the lab.

The image below shows the Internal or Intranet site, accessed by internal users to BNL. The URL is http://intranet.bnl.gov/bsd/ (1) Notice the links in the local navigation area (2). This is the internal local navigation area which allows internal BNL users the ability to access ALL available links.

If you have a question that is not addressed in these pages, please send an email to itdhelp@bnl.gov.

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Last Modified: February 1, 2008