Reverse Proxy???
 

I have a bunch of systems on a LAN that are running various web-based administrative tools (backups, log analysis, CUPS, postfix information, etc. etc.). I'm looking for a way to access all of these externally, but I don't want to punch dozens of holes in the firewall.

Also, if possible, I'd like to wrap all of this in SSL.

I'm not sure how it's done, but I've seen some SSL-based web "VPNs" that include a local URL after a internet URL, like:
https://www.mydomain.com/http://hostname/

Any suggestions?

The best one from a quick google search is openvpn.net. Although, most routers have VPN capabilities. Do you not have a router that could do the job?

I don't want a VPN solution, I want something that's *totally* web-based.

I.e. I want to just use a web browser- authenticate in the browser, and just get internal web pages.