I'd like to be able to share port 443 between Apache+mod_ssl and OpenVPN 
(due to some braindead decisions by firewall administrators at customers' 
sites - "we can only open port 443, all other ports are insecure"). This 
has been discussed on the OpenVPN mailing lists (go to 
http://news.gmane.org/gmane.network.openvpn.user and search for "port 
share apache" using the box at the bottom). No definitive solution was 
proposed, but there was mention of http://l7-filter.sourceforge.net/ which 
uses the Linux-specific netfilter packet classifier. Do we have anything 
similar?

-- 
Stephen