I am trying to setup SNI on a server running Ubuntu 8.04 with openssl 0.9.8g and apache 2.2.8. I know that I need either mod_gnutils or openssl 0.9.8j (I think) to support SNI. Is it possible to do this under Ubuntu 8.04 without having to recompile apache? If not, I think I would feel better just upgrading my server to 10.04.
SNI for Apache 2.2 requires OpenSSL with tlsext support compiled. This is done since the OpenSSL 0.9.8g-10ubuntu1 package shipped with Intrepid (8.10), which is not available for Hardy via backports.
So you either switch to 10.04 or recompile from the Intrepid source package. I would personally suggest upgrading to Lucid.