[niij]

If it's hosted in local IP space and therefore you can't get a certificate, you can setup a CA and push that CA certificate through Group Policy. I had to do it myself and it took 3-4 hours (mostly because I'm bad at Group Policy)

[byuu]

The problem is that I'm a developer on a team of six. And my site is used by another five or six teams. It's a little tools site that does various SQL queries and such against databases other teams don't have access to. They're not going to allow me to push my signing certificate onto everyone's computers. I'm very low on the org chart.

[niij]

Well I assume in a companywith that many teams they would have already came across a need to manage their own simple, internal CA. Maybe you can be the person to set it up, trust me it's scarier than it looks