                LoadModule ssl_module           libexec/libssl.so
                ...
                <VirtualHost 111.222.113.114:443>
                <IfModule mod_ssl.c>
                ServerName www.vetmed.uni-muenchen.de
                DocumentRoot /var/www/htdocs
                DirectoryIndex index.html
                ErrorLog /var/log/apache/https.vetmed.uni-muenchen.de.errorlog
                TransferLog /var/log/apache/https.vetmed.uni-muenchen.de.transferlog
                ProxyPass /studium/wahlpflicht/kurse http://localhost:8081/kurse
                ProxyPassReverse /studium/wahlpflicht/kurse http://localhost:8081/kurse
                SSLEngine on
                SSLCertificateFile  /etc/apache/vetmed.cert
                SSLCertificateKeyFile /etc/apache/vetmed.key
                SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown
                </IfModule>

Note: The 'SSLCertificateFile' points to the server's SSLCertificate. This was generated by 'openssl req -new > cert.csr'; 'openssl rsa -in privkey.pem -out cert.key'; 'openssl x509 -in cert.csr -out cert.crt -req -signkey cert.key -days 323'. The 'mod_ssl' comes from http://www.modssl.org/ (or 'libapache-mod-ssl' in Debian).

