security??

I am building an intranet site that requires a userID and password for the users to get past the first page. At the moment the passwords are passed from a form as part of the URL. The trouble with this method is that the url gets cached in the temporary internet files directory on the client, so anybody can go up to someone elses pc and retrieve their id and password from the cache. Is there a way to turn off the cacheing on the clients machine, or a better (more secure) way to send passwords?? (the server is NT 4.0 running IIS3.0, the clients are w3.1,w95 and nt)
tia.
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acsmithAsked:
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bigelosConnect With a Mentor Commented:
To turn the caching off in all browsers, you just set the expiration date.  Here's how:

To help the browser to decide how long a cached copy of your pages should be used before retrieving a newer copy, you could use the following HTML tags:

    <META HTTP-EQUIV="Expires" CONTENT="Tue, 01 Jan 1980 1:00:00 GMT">

Above META tag should be placed in between your <HEAD> and </HEAD> tags. Also note that the date specified should be a date in the past so that the browser will immediately discard the cached copy or not cache at all.
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slokCommented:
Under IE3 and Netscape you can set the caching to 0

For IE3, Options->Advance->Settings
For Netscape4, Preference->Advance->Cache

Set them to 0.
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acsmithAuthor Commented:
Yeah, but I need to turn the caching off on the clients machine from the server (or find another way of sending passwords). I won't be able to get physically near the clients machines to set their browsers up for them.
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slokCommented:
how about using an applet to get the passowrd.
That way, the entry won't be cached.

If you accept this, I will submit this as answer.
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bigelosCommented:
slok,

Win3.1 won't do Java applets....
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acsmithAuthor Commented:
cheers bigelos,
works a treat.
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