Apache HTTP Server /etc/apache2/mods-available/proxy_html.conf

# Configuration example.
#
# For detailed information about these directives see
# <URL:http://httpd.apache.org/docs/2.4/mod/mod_proxy_html.html>
# and for mod_xml2enc see
# <URL:http://httpd.apache.org/docs/2.4/mod/mod_xml2enc.html>
#

# All knowledge of HTML links has been removed from the mod_proxy_html
# code itself, and is instead read from httpd.conf (or included file)
# at server startup.  So you MUST declare it.  This will normally be
# at top level, but can also be used in a <Location>.
#
# Here's the declaration for W3C HTML 4.01 and XHTML 1.0

ProxyHTMLLinks  a           href
ProxyHTMLLinks  area        href
ProxyHTMLLinks  link        href
ProxyHTMLLinks  img         src longdesc usemap
ProxyHTMLLinks  object      classid codebase data usemap
ProxyHTMLLinks  q           cite
ProxyHTMLLinks  blockquote  cite
ProxyHTMLLinks  ins         cite
ProxyHTMLLinks  del         cite
ProxyHTMLLinks  form        action
ProxyHTMLLinks  input       src usemap
ProxyHTMLLinks  head        profile
ProxyHTMLLinks  base        href
ProxyHTMLLinks  script      src for

# To support scripting events (with ProxyHTMLExtended On),
# you'll need to declare them too.

ProxyHTMLEvents \
	onclick ondblclick \
	onmousedown onmouseup onmouseover onmousemove onmouseout \
	onkeypress onkeydown onkeyup onfocus onblur \
	onload onunload onsubmit onreset onselect onchange

# If you need to support legacy (pre-1998, aka "transitional") HTML or XHTML,
# you'll need to uncomment the following deprecated link attributes.
# Note that these are enabled in earlier mod_proxy_html versions
#
# ProxyHTMLLinks    frame   src longdesc
# ProxyHTMLLinks    iframe  src longdesc
# ProxyHTMLLinks    body    background
# ProxyHTMLLinks    applet  codebase
#
# If you're dealing with proprietary HTML variants,
# declare your own URL attributes here as required.
#
# ProxyHTMLLinks    myelement   myattr otherattr
#
###########
# EXAMPLE #
###########
#
# To define the URL /my-gateway/ as a gateway to an appserver with address
# http://some.app.intranet/ on a private network, after loading the
# modules and including this configuration file:
#
# ProxyRequests Off  <-- this is an important security setting
# ProxyPass /my-gateway/ http://some.app.intranet/
# <Location /my-gateway/>
#	ProxyPassReverse /
#	ProxyHTMLEnable On
#	ProxyHTMLURLMap http://some.app.intranet/ /my-gateway/
#	ProxyHTMLURLMap / /my-gateway/
# </Location>
#
# Many (though not all) real-life setups are more complex.
#
# See the documentation at
# http://apache.webthing.com/mod_proxy_html/
# and the tutorial at
# http://www.apachetutor.org/admin/reverseproxies