In an effort to keep the web communication secure the web browser support for older, inferior, security protocols gets phased out over time. This encourages web server administrators to employ up to date security protocols. Unfortunately, this is not always successful and some web servers still employ older and weaker protocols. If you have no alternative but to use a less secure service this post explains how to enable older security protocols in the firefox web browser.
I do rely on such a service and when I try to access it from a default install of firefox 2.0 I get the following error message.
Firefox can't connect securely to ... because the site uses a security protocol which isn't enabled.
Below is a corresponding screenshot.
On the other hand, in the older version of firefox (version 1.5) this service worked by default. If one was to disable the less secure protocols in the older version of firefox, then the following error message would be produced.
Firefox and ... cannot communicate securely because they have no common encryption algorithms.
And here is the screenshot.
Advanced configuration of the firefox web browser is simple. To view the available settings in the firefox web browser type the following in to the URL (address) bar.
There are a lot of settings. A filter box is provided at the top of the page to help you norrow down the list. Type in the following string into the filter box to norrow down the list to the few protocols of interest.
Below is a screenshot of the web browser after filtering.
The web service I use requires the following protocol to be enabled.
You can change the default setting from false to true by double clicking. The result is shown below.
Browsing again to the weakly secured website results in a warning message shown below.
You have requested a page that uses low-grade encryption. The web site has identified itself correctly, but information you see or enter on this page could be read by a third party. Alert me whenever I am about to view a page that uses low-grade encryption.
Also shown in the following screenshot.
But at least it is now possible to use the service.
You can configure what security warning messages get displayed by going to:
Edit » Preferences » Security » Warning Messages » Settings.
That's it. Enjoy!
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