[Metalab] http front-end for linux embedded system

hi! i'm currently working with a linux embedded system (armv5l, debian lenny) running a http app server. it's going to be accessible via internet for testing soon. i wanna do some preparations before sending it into the wild. that's about what i want: firewall -> http front-end (encryption,authentication, http specifics) -> app server (authorization, app server blafoo). my question: can someone suggest an open source http front-end for this task? i'd like it to be fast, secure and lightweight. i'll need at least vhosts, tls and http forwarding to the app server. i had a look at thttp and dhttpd and they match my requirements more or less. thx, amir