I understand my issue may be a little unique, but I am sure some people have come across it. I am working with some test gears that have either self-signed certificates or flat out invalid/expired SSL certificates. Since this is a lab/test environment I don't want to have to go through the trouble of generating my own certificates and load them on each test device, since they come and go quite a bit. Is there a way to tell Firefox to ignore SSL warning, but only for a given subnet? For example, if the SSL certificate is presented by anyone in 10.11.12.0/24, accept it without question, but if it's coming from anywhere else, check its validity. I doubt this will ever be a main feature for Firefox, but perhaps someone has come across an add-on that does this?