I have a local ftp server (Freecom FSG-3) running on Linux 2.6 based on Snapgear. I offer users access to images on the local ftp server (anonymous login) through a html page on a non-local webserver. When I browse to the webpage in Firefox 3.0.8, some 8 thumbnails (instead of 38) are randomly shown. I get a lot of error messages (see attachment) on iptables (also randomly). When I click all massages away, I am able to manually show each thumbnail. I can also access the real image by clicking on the thumbnail.
When I browse with Internet Explorer 7.0.6, I do not see any thumbnail. Choosing show picture doesn't help. Clicking on a non-existing thumbnail returns the error "Internet Explorer cannot display the webpage". "Enable FTP folder view" checked gives the same result. If I uncheck "use passive FTP" I get a login window when clicking on a non-existing thumbnail. No matter what I fill in, I don't get access to the image.
I tried to access the ftp files locally and using an unprotected wireless access point nearby: no difference...