// COMPLETE THREAD

Barring access to Netscape

4 expanded posts ยท every known parent and child

NODE c46686e8Barring access to Netscape
If you want to bar access to your site from a Netscape browser, such 
can easily be accomplished.  If memory serves, every browser, when 
connecting to a site, exchanges certain information about the client 
with the server.  One can gain access easily to that information.

I believe that Netscape uses "Mozilla" as their keyword when 
exchanging browser-specific information.
NODE ef3ca852Re: Barring access to Netscape
On Fri, 1 Dec 1995, Ed Carp wrote:

> I believe that Netscape uses "Mozilla" as their keyword when 
> exchanging browser-specific information.

The field is User-Agent. However, blocking access to users of Navigator 
isn't a particularly useful thing to do. If you must do something, why 
not modify your GET handler to add a header to the start of all html 
pages informing people of the problem, and suggesting alternatives. 

Someone else [I can't remember, but I'll call them Alice] claimed that the
security problems showing up were part of a deliberate conspiracy.  To
anyone who knows anything about the history of these things knows how
absurd this is. The principals at Netscape are a nice bunch of really
guys, but were not really up to speed on issues like security and
networking- for example, the first incarnation of SSL had an RC4 stream
running with no checksumming whatsoever. The security problems that
resulted are due to the learning curve.

Simon
NODE 47da9e93Re: Barring access to Netscape
> The field is User-Agent. However, blocking access to users of Navigator 
> isn't a particularly useful thing to do. If you must do something, why 
> not modify your GET handler to add a header to the start of all html 
> pages informing people of the problem, and suggesting alternatives. 

	I haven't modified my GET, but at the top of all the standard
c2.org web pages (http://www.c2.org/) if you are using pre-1.12
netscape, it barfs at you with a nasty message. I plan on adding a
line for all netscape browsers, with a link to Lance's page, once it
is ready. (Maybe it is ready now, I just haven't looked yet.)

> 
> Someone else [I can't remember, but I'll call them Alice] claimed that the
> security problems showing up were part of a deliberate conspiracy.  To
> anyone who knows anything about the history of these things knows how
> absurd this is. The principals at Netscape are a nice bunch of really
> guys, but were not really up to speed on issues like security and
> networking- for example, the first incarnation of SSL had an RC4 stream
> running with no checksumming whatsoever. The security problems that
> resulted are due to the learning curve.
> 
> Simon
> 


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NODE d04ed060Barring access to Netscape, a step better
> The field is User-Agent. However, blocking access to users of Navigator 
> isn't a particularly useful thing to do. If you must do something, why 
> not modify your GET handler to add a header to the start of all html 
> pages informing people of the problem, and suggesting alternatives. 

Great idea! I'm sure there is a cyberpunk on this list willing to write a 
patch to NCSA HTTPd to get the job done, in a configurable manor of 
course so that a template.html would be 'inserted' at the top of every 
document sent out to the specified browser. Any takers?