- From: Ora Lassila <ora.lassila@nokia.com>
- Date: Fri, 15 Apr 2005 09:54:18 -0400
- To: Phil Archer <phil.archer@icra.org>
- CC: SWIG <semantic-web@w3.org>
Now that you mention it, I realize I have also experienced some "strange" behavior. When the Wilbur [1] HTTP client requests a URL (with Accept: header containing only application/rdf+xml), I sometimes don't get any response and sometimes get the corresponding text/html response (from some servers that are able to differentiate between the two) when I am behind our corporate firewall, but the correct RDF file when I am on the "open" internet. I haven't had time to debug this yet, though. Kind regards, - Ora [1] http://wilbur-rdf.sourceforge.net/ -- Ora Lassila mailto:ora.lassila@nokia.com http://www.lassila.org/ Research Fellow & Head of Competence Area (Data Modeling & Management) Nokia Research Center / Boston > From: Phil Archer <phil.archer@icra.org> > Organization: ICRA > Date: Fri, 15 Apr 2005 12:57:10 +0100 > To: SWIG <semantic-web@w3.org> > Subject: Firewall problems with RDF MIME type? > Resent-From: <semantic-web@w3.org> > Resent-Date: Fri, 15 Apr 2005 12:02:12 +0000 > > > Hi, > > A couple of months back I raised a problem that the RDF MIME type is not > widely supported by servers in default configuration. Apache seems generally > to send its default MIME type of plain/text and IIS seems to refuse to send > anything at all (until you configure them properly). We have some work to do > to get it into the mainstream! > > Be that as it may, I've now hit a new problem. Firewalls don't seem to like > the RDF MIME type either. At my encouraging, a company (www.madesafe.com) > put an RDF file (labels.rdf) in its root directory and then configured > Apache to include an HTTP Response Header to point to it (this involved > installing an Apache module and adding the RDF MIME type). > > No problem - except a lot of the website became inaccessible! Reconfigure > Apache to take out the RDF MIME type - problem disappears. It's not the > server, it's the firewall that thinks it's detecting a problem. Configuring > the firewall _didn't_ solve it. (The solution for now, has been to rename > the file as labels.xml - so it gets the text/xml MIME type but it's better > than text/plain). > > Has anyone come across anything similar? Is there a real risk with something > that declares a MIME type of application/rdf+xml on it, in which case the > firewall was correct to block it, or is it just that we have to educate the > firewall manufactures as well as people who decide default configurations of > servers? > > (I've deliberately omitted the name of the firewall - suffice to say it's a > good one form a good company). > > Phil. > > >
Received on Friday, 15 April 2005 14:09:21 UTC