I am posting this in the security forums as I beleive this is security related. When trying to post a link to an image on our forums (phpBB) I get the following error:

Not Acceptable
An appropriate representation of the requested resource /forums/posting.php could not be found on this server.

In doing some research on the net it looks like it is a security setting on the server and it only seems to give this error when posting an image from like Image Shack or one of the other free image hosting sites. I am guessing this is related to some of the vuleralbilities with images and phpBB does anyone have any information on this?

TIA

RedNight

Welcome to the forums RedNight.

Sorry, I don't have an answer for you but maybe one of our other members will be able to shed some light on it.

Welcome to the forum, RedNight.

Not sure what is wrong but we helped another member with a similar problem in this thread.
The solution was to use another domain/service than imageshack.

Thank you for the reply Thomas and the welcome Bruce.

I thought that is what would be needed and have told the users of the forums to do that. Imageshack just happens to be the most popular one so I was wanting to let them continue using it.

We will work around it though by using another site. Thanks again for the prompt reply.

Welcome to the forums!

If you are the web master, add a new text file ~/public_html/forums/.htaccess

Content:

Intresting Paul, I will have give that try on my own phpBB

Welcome to the forums Rednight. If you want people to post images on your forum, take a look at the smartor album for PHPBB or Mighty Gorons Full album package which has all the bells and whistles on.

http://smartor.is-root.com
http://www.area69.phphost.info/

Jim

406 Not Acceptable is a HTTP error which is not caused by the forum scripts. Interestingly, many legitimate problems with 406 error are related to forums, blogs, and scripts using PHP.

I think the cause of this 406 error is: The security module thinks that your web browser cannot understand the content to be delivered to you, because your browser has specified a certain content-type. In the forum/blog case, it thinks that the content (which is usually your topic post/reply) contains something that your browser will not understand.

I believe the original intention of this feature/bug is to filter out dangerous script codes. If you disable the scan, make sure your forum/blog/other PHP scripts properly disallow/filter dangerous codes.

Hi,

I experienced the same problem while trying to re-categorize this particular posts of mine, after importing it from blogger.com. Now that it's been fixed up and re-categorized, is it safe leaving the .htaccess like that? Or would it be best to return it to "normal"?

Thanks.

Hi, I'm Davide.

I'm an user community hosted from totalchoice.
Today I've received the same response from the server, while I'm posting a message containing url as "*foto.imageshack.us".

I Think that there is a security restriction so http server doesn't accept POST containing the words ".images"

My question is :"Is it possibile that server checks .images folder denying directory trasversal vulnerabilites and doesn't check any important folder as cgi-bin root etc.etcc... ?"

Imageshack is the most popular image hosting service used in forum community.

Are there any possibilities to avoid this problem?

Thank at all

//D

I add that the problem is not only with imageshack but with all image hosting providers.
They usually generate from an upload file , another file that it combines default name file with other randomly characters.
If accidentally, in the upload filename appears the word ".images" , it will break all POST action containing this filename

Solved with paultwang's advise
Thank you!

Welcome to the forums Davide

Glad you have it sorted out.

Welcome to the forum, Davide.

Welcome to the forums, glad it worked out ok!

JimE

I instituted the fix as suggested above by uploading the .htaccess file, and it works perfectly!

Now, TCH, that won't endanger our relationship, will it????