Wait -- green, why would you have to reconfigure your firewall?? I am using the new rv.net photo posting app designed by 1492 (one of the moderators), and it should work seamlessly with this forum. When people have posted with that new app, I have no problem seeing the photos with Chrome -- are you using a different browser, perhaps?
There is one other big advantage to this new app -- it avoids that annoying problem when a picture is too big and causes the text of the postings to spread out horizontally, so it is hard to read. (I am sure there is a name for that particular glitch, but I don't know what it is.)