Check out the following page for details: http://www.terminator.net for details.
Once you are using that, Linuxconf can't tell the source of the requests. All requests seems to be from 127.0.0.1, so do not forget to enable this in the linuxconf network access dialog.
Here is a sample httpd configuration to achieve secure access to linuxconf.
ServerAdmin you@your_domain.com DocumentRoot /some_directory ServerName www.somename.com ProxyPass / http://localhost:98/ ProxyPassReverse / http://localhost:98/ SSLEngine on SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key