ISAPI plug-in Error Message:

Bug #134078 reported by John Cottier on 2007-08-22
0
Affects Status Importance Assigned to Milestone
firefox (Ubuntu)
Undecided
Unassigned

Bug Description

Binary package hint: firefox

When I try to login with user name and password (whether valid or not) to the web site www.silabs.com I get a white screen report which says:-
>>>
Message from the ISAPI plugin:

Internal Server failure, ISAPI plugin. Cannot continue.

Build date/time: Aug 5 2005

Change Number: 616810
<<<

However it works fine in Konqueror and on windows Firefox. I had a similar problem on another web site a few days ago, and again its was fine in Konqueror and windows Firefox.

Regards

John Cottier.

ProblemType: Bug
Architecture: i386
Date: Wed Aug 22 16:46:23 2007
DistroRelease: Ubuntu 7.04
Package: firefox 2.0.0.6+1-0ubuntu1
PackageArchitecture: i386
SourcePackage: firefox
Uname: Linux john-ubuntu 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux

John Cottier (j-cottier) wrote :

On Wed, Aug 22, 2007 at 03:54:28PM -0000, John Cottier wrote:
>
> However it works fine in Konqueror and on windows Firefox. I had a
> similar problem on another web site a few days ago, and again its was
> fine in Konqueror and windows Firefox.
>

What user-agent string does konqueror submit for you? Maybe it passes
IE or something?

 - Alexander

John Cottier (j-cottier) wrote :

Thank you for your reply Alexander. I am unfamiliar with those terms, can you
let me know how to obtain that information please?

Regards

John Cottier.

On Friday 24 August 2007 00:08:19 Alexander Sack wrote:
> On Wed, Aug 22, 2007 at 03:54:28PM -0000, John Cottier wrote:
> > However it works fine in Konqueror and on windows Firefox. I had a
> > similar problem on another web site a few days ago, and again its was
> > fine in Konqueror and windows Firefox.
>
> What user-agent string does konqueror submit for you? Maybe it passes
> IE or something?
>
> - Alexander

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Alexander Sack (asac) wrote :

On Fri, Aug 24, 2007 at 07:49:59AM -0000, John Cottier wrote:
> Thank you for your reply Alexander. I am unfamiliar with those terms, can you
> let me know how to obtain that information please?

nevermind ... please try to go to about:config (type this in location
textfield and hit return) and then change the setting for

general.useragent.extra.firefoxComment

... replace the word feisty ... with fiesty

and see if that helps for now.

 - Alexander

John Cottier (j-cottier) wrote :

Hello Alexander,

Thank you, yes it did fix it! I would be fascinated to know why if you have
the time.

Regards

John.

On Friday 24 August 2007 09:47:02 Alexander Sack wrote:
> On Fri, Aug 24, 2007 at 07:49:59AM -0000, John Cottier wrote:
> > Thank you for your reply Alexander. I am unfamiliar with those terms, can
> > you let me know how to obtain that information please?
>
> nevermind ... please try to go to about:config (type this in location
> textfield and hit return) and then change the setting for
>
> general.useragent.extra.firefoxComment
>
> ... replace the word feisty ... with fiesty
>
> and see if that helps for now.
>
> - Alexander

Scanned by MailDefender - managed email security from intY - www.maildefender.net

John Cottier (j-cottier) wrote :

Hello Alexander,

I have done some research on user agents. It would seem then, that this is not
a bug at all, but the fault of a) The bad handling of the user agent string
of the web sites server b) Microsoft for messing up and confusing the
standards for user agent reporting in the first place.

But I am curious to know why simply miss-spelling feisty stops the web server
falling over!

Regards

John Cottier.

On Friday 24 August 2007 09:47:02 Alexander Sack wrote:
> On Fri, Aug 24, 2007 at 07:49:59AM -0000, John Cottier wrote:
> > Thank you for your reply Alexander. I am unfamiliar with those terms, can
> > you let me know how to obtain that information please?
>
> nevermind ... please try to go to about:config (type this in location
> textfield and hit return) and then change the setting for
>
> general.useragent.extra.firefoxComment
>
> ... replace the word feisty ... with fiesty
>
> and see if that helps for now.
>
> - Alexander

Scanned by MailDefender - managed email security from intY - www.maildefender.net

Alexander Sack (asac) wrote :

On Fri, Aug 24, 2007 at 09:02:37AM -0000, John Cottier wrote:
> Hello Alexander,
>
> Thank you, yes it did fix it! I would be fascinated to know why if you have
> the time.

Because you are using a firewall from an ignorant software vendor who
doesn't care that he identifies any user-agent string that contains
IST as a trojan .... if you have a support contract with your firewall
vendor, please punch them to drop their stupid IST-trojan rule.

Read https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/95241

where all this is documented.

 - Alexander

Alexander Sack (asac) wrote :

On Fri, Aug 24, 2007 at 09:43:45AM -0000, John Cottier wrote:
> Hello Alexander,
>
> I have done some research on user agents. It would seem then, that this is not
> a bug at all, but the fault of a) The bad handling of the user agent string
> of the web sites server b) Microsoft for messing up and confusing the
> standards for user agent reporting in the first place.
>
> But I am curious to know why simply miss-spelling feisty stops the web server
> falling over!
>

its a bad firewall configuration ... as pointed out in mail before. In
the bug i mentioned there is an instruction how your admins can
disable that rule.

But if you have the power, please kick your firewall vendor for
doing something that stupid and ignorant. AFAIK, this has been
reported multiple times to them (e.g. that they break all browsers
that contain feisty in their user-agent) ... but they never reacted.

 - Alexander

Alexander Sack (asac) wrote :

On Fri, Aug 24, 2007 at 12:23:18PM +0200, Alexander Sack wrote:
> its a bad firewall configuration ... as pointed out in mail before. In
> the bug i mentioned there is an instruction how your admins can
> disable that rule.

Well i am sorry, that i might have sounded a bit angry in this mail,
but this issue pops-up frequently and is a major annoyance imo...

... now that I read your bug again i see that you have the problem
with just one site ... which means that the firewall is not on your
site and you can probably not do much about it other then contacting
the hoster of the site and explaining the case to them ... maybe point
them to the bug i marked this one a duplicate from.

Thanks and sorry for any confusion,

 - Alexander

John Cottier (j-cottier) wrote :

Hello Alexander,

Thanks for your help.

I have reported this to SiLabs, hopefully they will do something about it.

Regards

John.

On Friday 24 August 2007 11:28:06 Alexander Sack wrote:
> *** This bug is a duplicate of bug 95241 ***
> https://bugs.launchpad.net/bugs/95241
>
> On Fri, Aug 24, 2007 at 12:23:18PM +0200, Alexander Sack wrote:
> > its a bad firewall configuration ... as pointed out in mail before. In
> > the bug i mentioned there is an instruction how your admins can
> > disable that rule.
>
> Well i am sorry, that i might have sounded a bit angry in this mail,
> but this issue pops-up frequently and is a major annoyance imo...
>
> ... now that I read your bug again i see that you have the problem
> with just one site ... which means that the firewall is not on your
> site and you can probably not do much about it other then contacting
> the hoster of the site and explaining the case to them ... maybe point
> them to the bug i marked this one a duplicate from.
>
> Thanks and sorry for any confusion,
>
> - Alexander

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