Combining Reverse Proxy with a Forwarding Proxy and SSL

Hello guys,

I have a problem with a special environment:

Client ---http----> Apache Reverse Proxy (1.1.1.1) -----https-----> Squid Forwarding/Chaching Proxy (1.1.1.2) ----https-----> Webserver (1.1.1.3)

The client makes http-request to my apache reverse proxy. This reverse proxy should forward this request via https to the real webserver. But this request should go trough a forwarding/caching proxy (squid).

If I setup this environment with apache 2.0.51 and this config:


ServerName XXXXXX
ServerAdmin mailadmin@example.com
ProxyRequests Off
ProxyRemote * http://1.1.1.2:3128
SSLProxyEngine on
ProxyPass / https://1.1.1.3/
ProxyPassReverse / https://1.1.1.3/


I got following error message:

[error] (20014)Error string not specified yet: proxy: request failed to 1.1.1.2:3128

If I use http between reverse proxy and the webserver it works with the forwarding proxy:

Client ---http----> Apache Reverse Proxy (1.1.1.1) -----http-----> Squid Forwarding/Chaching Proxy (1.1.1.2) ----http-----> Webserver (1.1.1.3)

It also works with https, if I don't use the proxy:

Client ---http----> Apache Reverse Proxy (1.1.1.1) -----https-----> Webserver (1.1.1.3)

Is my environment supported by apache with modssl??? If yes, how I have to configure the apache??

Thanks and best regards daniel










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