DNSBL blockpage only works with root domain

carlinix

Hi folks,

Whenever I try to access a DNSBL blocked root domain it shows the block page but the moment it gets into a subfolder or file in the domain it only shows 1x1 px page.

Meaning
http://detectportal.firefox.com/
redirects to the DNSBL blockpage with the blocked domain info "This website detectportal.firefox.com has been blocked by the Network Administrator!"
but if I try
http://detectportal.firefox.com/canonical.html
http://detectportal.firefox.com/success.txt
http://detectportal.firefox.com/justatest
it only shows 1x1pixel

Is this by design? Is there anything I can do to make the rest of the pages show the alert?

Regards

Gertjan

@carlinix said in DNSBL blockpage only works with root domain:

Meaning
http://detectportal.firefox.com/
redirects to the DNSBL blockpage with the blocked domain info "This website detectportal.firefox.com has been blocked by the Network Administrator!"

I presume that "detectportal.firefox.com" is just an example here.
But ... be aware that this URL shouldn't be blocked if possible for two reasons :
The resource requested returns just a 8 byte 'page' : it says 'success'.
This URL is most probably be used by the OS or app on a device (probably Firefox ) to detect the presence of a captive portals on the connected network.