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    <title>topic Trouble: css 1150 vs. apache mod_proxy in Application Networking</title>
    <link>https://community.cisco.com/t5/application-networking/trouble-css-1150-vs-apache-mod-proxy/m-p/1116930#M22877</link>
    <description>&lt;P&gt;Hello,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I configured a server Apache http as the frontend which receives requests from customers and in turn forwards through the module (mod_proxy) a container with two services (http servers) configured in a css 11500.  mod_proxy used persistence on the connections to backends (ccs vp).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;After much operate properly are presented to customers error http 503 (service not available). Through a review and sniffer detects that the Apache mod_proxy does not close connections (half-close) or closed many minutes later.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;What changes do recommend on CSS to be compatible with Apache mod_proxy?&lt;/P&gt;</description>
    <pubDate>Tue, 05 Aug 2008 00:13:28 GMT</pubDate>
    <dc:creator>veronica.g</dc:creator>
    <dc:date>2008-08-05T00:13:28Z</dc:date>
    <item>
      <title>Trouble: css 1150 vs. apache mod_proxy</title>
      <link>https://community.cisco.com/t5/application-networking/trouble-css-1150-vs-apache-mod-proxy/m-p/1116930#M22877</link>
      <description>&lt;P&gt;Hello,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I configured a server Apache http as the frontend which receives requests from customers and in turn forwards through the module (mod_proxy) a container with two services (http servers) configured in a css 11500.  mod_proxy used persistence on the connections to backends (ccs vp).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;After much operate properly are presented to customers error http 503 (service not available). Through a review and sniffer detects that the Apache mod_proxy does not close connections (half-close) or closed many minutes later.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;What changes do recommend on CSS to be compatible with Apache mod_proxy?&lt;/P&gt;</description>
      <pubDate>Tue, 05 Aug 2008 00:13:28 GMT</pubDate>
      <guid>https://community.cisco.com/t5/application-networking/trouble-css-1150-vs-apache-mod-proxy/m-p/1116930#M22877</guid>
      <dc:creator>veronica.g</dc:creator>
      <dc:date>2008-08-05T00:13:28Z</dc:date>
    </item>
    <item>
      <title>Re: Trouble: css 1150 vs. apache mod_proxy</title>
      <link>https://community.cisco.com/t5/application-networking/trouble-css-1150-vs-apache-mod-proxy/m-p/1116931#M22878</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I presume you are talking about using SSL between the reverse proxy and&lt;/P&gt;&lt;P&gt;the backend? (generally SSL is not really necessary in such&lt;/P&gt;&lt;P&gt;configurations)&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Do you have "SSLProxyEngine On" configured?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Obvious question: Is port 443 open on the intermediate FW?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;But a quick check on google (hint, hint...) reveals this is the error =&lt;/P&gt;&lt;P&gt;you get when trying to pass through a proxy with an HTTP method that is =&lt;/P&gt;&lt;P&gt;not supported by the proxy.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Check out this message and the faq link therein (it's about subversion =&lt;/P&gt;&lt;P&gt;but it's the same problem).&lt;/P&gt;&lt;P&gt;&lt;A class="jive-link-custom" href="http://svn.haxx.se/dev/archive-2002-06/1638.shtml" target="_blank"&gt;http://svn.haxx.se/dev/archive-2002-06/1638.shtml&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;In your case, the client must use the CONNECT method to tell the proxy =&lt;/P&gt;&lt;P&gt;to pass the requests directly to the internal server. For this to work =&lt;/P&gt;&lt;P&gt;you need:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- mod_proxy_connect (not just mod_proxy)&lt;/P&gt;&lt;P&gt;- AllowCONNECT 443 (or not present - this is the default)&lt;/P&gt;&lt;P&gt;see &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;A class="jive-link-custom" href="http://httpd.apache.org/docs-2.0/mod/mod_proxy.html#allowconnect" target="_blank"&gt;http://httpd.apache.org/docs-2.0/mod/mod_proxy.html#allowconnect&lt;/A&gt; &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;for details.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;sachin garg&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 05 Aug 2008 01:01:37 GMT</pubDate>
      <guid>https://community.cisco.com/t5/application-networking/trouble-css-1150-vs-apache-mod-proxy/m-p/1116931#M22878</guid>
      <dc:creator>sachinga.hcl</dc:creator>
      <dc:date>2008-08-05T01:01:37Z</dc:date>
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