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Re: [FW-1] Malformed URLs



Just a comment... if vendors (Microsoft in this case) stick with standards (no white space allowed in URLs) then you have a lot lower chance of ancillary problems like this.  The issue really arises from web pages with embedded white space URLs, typically the result of using a Microsoft product to create the web page.

Pat

Pasquale Scopelliti
Technical Leader
Corning Internet Team> ----------
> From:         John W. Kralik[SMTP:[email protected]]
> Reply To:     Mailing list for discussion of Firewall-1
> Sent:         Wednesday, May 15, 2002 7:41 AM
> To:   [email protected]
> Subject:      Re: [FW-1] Malformed URLs
>
> Right,
>
> The spaces are auto-converted by MSIE (normal behavior), which is not
> normally a problem (without Checkpoint, the request works fine.)  In
> fact, our old Raptor Firewall has no problem passing these requests.
>
> When Firewall-1 is put in place though, these web pages are inaccessible
> to my client machines.
>
> Is this a bug with Firewall-1, or is there a work around?
>
> ~~~John
>
>
> On Wed, May 15, 2002 at 12:14:49PM +0200, Volker Tanger wrote:
> > John W. Kralik wrote:
> > >
> > >        The firewall does not seem to allow passage of "white space"
> > >characters in URL requests.  (Such as http://www.anywhere.com/white
> > >space here.html)  We are using MS IE Explorer 6.0, which fills in the
>                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > >spaces with %20 characters.
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > The firewall behaviour is correct - it's MSIE that goofs.
>  Oh really?
> > A correct request looks like
> >
> >        COMMAND URL PROTOCOL
> >        optional: header
> >        optional: header
> >
> >        (double CR/LF)
> >
> > with COMMAND usually being get/post/put/head/connect and URL *not*
> > containing whitespaces as the whitespaces are used to separate
> COMMAND,
>  spaces in URL are autoconverted to %20 (at least this is what i read
>  above)
>
> --
>  Robert Ramiega  <[email protected]> RR282-RIPE
>  Security Team Leader   | Systems Administrator
>  TDC Internet Polska SA | PDi Ltd
>
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