# 403 errors with standard browser, pages work with GUI browser **URL:** \ **Category:** NGINX\ **Created:** [July 29, 2015, 5:01pm UTC](https://www.ruby-forum.com/t/403-errors-with-standard-browser-pages-work-with-gui-browser/242804 "2015-07-29T17:01:33Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Post date:** [July 29, 2015, 5:01pm UTC](https://www.ruby-forum.com/t/403-errors-with-standard-browser-pages-work-with-gui-browser/242804/1 "2015-07-29T17:01:33Z")
Hi, I’ve run across several websites where I get a 403 error when I connect to them with my standard webbrowser (lynx), yet the very same URIs work with the GUI browser fallback (Firef\*x). Example link: [http://blog.streamingmedia.com/2015/07/new-patent-pool-wants-share-of-revenue-from-content-owners.html](http://blog.streamingmedia.com/2015/07/new-patent-pool-wants-share-of-revenue-from-content-owners.html) Output from webbrowser: ←←← 403 Forbidden 403 Forbidden \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ``` nginx ``` All of these sites is common that they have an nginx error message, so this must be connected to your software somehow. To add insult to injury, this appears to be dependent on the User-Agent HTTP header: “Mozilla/5.0 (compatible)” works, “Lynx/2.8.9dev.6” works, “Lynx/2.8.9dev.6 libwww-FM/2.14” doesn’t, nor “Mozilla/5.0 (compatible) libwww-FM/2.14”. It appears that there is some blacklist on some component of my webbrowser. Please kindly remove it. ## Thanks, //mirabilos > > Why don’t you use JavaScript? I also don’t like enabling JavaScript in > > Because I use lynx as browser. > > +1 > > – Octavio Alvarez, me and ⡍⠁⠗⠊⠕ (Mario Lang) on debian-devel ---
**Author:** ![Thorsten\_Glaser](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/eb8c5e/32.png) [@Thorsten\_Glaser](https://www.ruby-forum.com/u/Thorsten_Glaser)\ **Post date:** [July 29, 2015, 5:23pm UTC](https://www.ruby-forum.com/t/403-errors-with-standard-browser-pages-work-with-gui-browser/242804/2 "2015-07-29T17:23:45Z")
On Wed, Jul 29, 2015 at 05:00:40PM +0200, Thorsten Glaser wrote: Hi there, > I’ve run across several websites where I get a 403 error when > I connect to them with my standard webbrowser (lynx), yet the > very same URIs work with the GUI browser fallback (Firef\*x). > All of these sites is common that they have an nginx error > message, so this must be connected to your software somehow. That suggests that they run nginx as their web server. There is unlikely to be any other connection. > To add insult to injury, this appears to be dependent on > the User-Agent HTTP header: “Mozilla/5.0 (compatible)” > works, “Lynx/2.8.9dev.6” works, “Lynx/2.8.9dev.6 libwww-FM/2.14” > doesn’t, nor “Mozilla/5.0 (compatible) libwww-FM/2.14”. > > It appears that there is some blacklist on some component > of my webbrowser. Please kindly remove it. I suspect that they have configured their instance of their web server to deny access to user agents which include the string “libwww”. I suspect that your best option for accessing the content is to change your web browser user agent string to omit “libwww” (and whatever other parts the server owner has chosen to block); at least until you contact the owner and convince them to change their configuration. Good luck with it, ## f Francis D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)