LoadFile   /usr/lib/libxml2.so
LoadModule proxy_html_module modules/mod_proxy_html.so

<IfModule mod_proxy.c>

        ProxyHTMLInterp On
        ProxyHTMLExtended On
        ProxyHTMLLogVerbose On
LogLevel Debug
#	SSLProxyEngine On
        ProxyVia On

        ProxyRequests Off
        ProxyPass /ispconfig/ http://localhost:81/
        ProxyHTMLURLMap http://localhost:81/ /ispconfig
        <Location /ispconfig/ >
                SSLRequireSSL
                #ProxyPassReverse http://localhost:81/
                ProxyPassReverse /
                SetOutputFilter INFLATE;proxy-html;DEFLATE
                ProxyHTMLURLMap /               /ispconfig/
                ProxyHTMLURLMap /ispconfig/     /ispconfig
                RequestHeader    unset  Accept-Encoding
        </Location>
</IfModule>