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From "Jeff DeFord" <jeff.def...@gmail.com>
Subject Re: [users@httpd] Apache 2 mod_proxy & mod_rewrite questions
Date Fri, 29 Sep 2006 14:41:41 GMT
AFAIK, it is all static content with some jsp pages. No CGI/PHP/Etc...
The real server is an Oracle application server, so all of the web
content was derived from the installation process script "AutoConfig".

My confusion is in trying to get the URL's rewritten and proxied that
go beyond the root level.  I have tried various combinations of
ProxyPass and ProxyPassReverse statements, Rewrite Rules, etc and so
far I can only get the root-level HTML to proxy and rewrite.

so the real url
https://realserver:8050/some_page.html

appears to be
https://proxyserver/some_page.html

Just as it should.

But mousing over or clicking any url with a directory path beyond "/"
shows that the URL does not get rewritten or proxied and I have tried
a myriad of combinations iwth ProxyPass/Reverse and RewriteRule
directives all to no avail.

Here are the important bits of the httpd.conf file:

<VirtualHost *:80>
  ServerName proxy_server
  RewriteEngine   On
  RewriteLogLevel 9
  RewriteLog      logs/rewrite_log
  ## Redirect all incoming HTTP requests to HTTPS locally before proxying.
  RewriteRule ^/(.*) https://proxy_server/$1 [R,L]
</VirtualHost>


<VirtualHost _default_:443>
  # General setup for the virtual host
  ServerName proxy_server
  SSLEngine on
  SSLOptions +StrictRequire
  SSLProtocol -all +TLSv1 +SSLv3
  SSLCipherSuite HIGH:MEDIUM:!aNULL:+SHA1:+MD5:+HIGH:+MEDIUM

  # Server Certificate:
  SSLCertificateFile conf/ssl.crt/server.crt
  # Server Private Key:
  SSLCertificateKeyFile conf/ssl.key/server.key
  # SSL Protocol Adjustments:
  SetEnvIf User-Agent ".*MSIE.*" \
  nokeepalive ssl-unclean-shutdown downgrade-1.0 force-response-1.0
  # Per-Server Logging:
  #CustomLog logs/ssl_request_log "%t %h %{SSL_PROTOCOL}x
%{SSL_CIPHER}x \"%r\" %b"
  CustomLog logs/ssl_request_log common

  RewriteEngine   On
  RewriteLogLevel 9
  RewriteLog      logs/rewrite_log

  ProxyRequests     Off
  SSLProxyEngine    On
  SSLProxyCACertificateFile conf/cacerts.crt
  ProxyPreserveHost On
  ProxyPass              /      https://real_server:8050/
  ProxyPassReverse  /      https://real_server:8050/
</VirtualHost>


I have tried putting proxy rules in the 443 virtual host
I have tried putting proxy rules in the IfModule mod_proxy.c section
I have tried rewrite rules in all kinds of places and all kinds of
combinations of proxy and rewrite directives...
But somehow I can't get the combination right.

I want URLs from the real server like this one
https://real_server:8050/dir1/dir2/jsp/some_page.jsp

to get proxied and appear as if they came from the proxy server
https://proxy_server/dir1/dir2/jsp/some_page.jsp

I just don't know where to put the rules and if I need both porxy and
rewrite rules for every possible URL/directory structure combination
that exists on the real server.

Any help or direction would be greatly appreciated.

-=jeff


On 9/28/06, Serge Dubrouski <sergeyfd@gmail.com> wrote:
> What kind of "real" server do you have on backend? Does it have static
> content or dynamic? Could it be that your wrong links are generated on
> backend by PHP/ASP/CGI or any other dynamic application that uses
> $SEVER_NAME or some other variable to build absolute links?
>
> On 9/28/06, Jeff DeFord <jeff.deford@gmail.com> wrote:
> > For testing purposes, I'm using a self-signed sert on the proxy server
> > for the initial redirection, then the proxy server acts as a SSL
> > client for all proxied requests that are handed off to the app server
> > which is listening on port 8050 (SSL) using a real certificate.
> >
> > I copied the real cert file to the proxy server and put it in a file
> > called cacerts.crt and added the directive shown below to the
> > httpd.conf file:
> >
> > SSLProxyCACertificateFile conf/cacerts.crt
> >
> > In this configuration, the proxy server can be configured to be a SSL
> > client for many sites each having their own cert.
> >
> > My problem is getting the proxy server configured so that mod_proxy
> > and mod_rewrite do their job for the URLs on the app server that are
> > below the root level and incorporate multiple levels of directories in
> > the URL. It all works great for foor-level URL's.
> >
> > I hope I answered your question. Now if someone could help me answer mine...
> >
> > -=jeff
> >
> >
> > On 9/28/06, John king <johnking06@gmail.com> wrote:
> > > Where is your server cert installed? If it is installed on the reverse proxy
> > > server, do you decrypte the incoming HTTPS
> > > traffic and re-encrypte it again in the proxy server before sending it to
> > > the next host?
> > >
> > >
> > > On 9/28/06, Jeff DeFord <jeff.deford@gmail.com> wrote:
> > > > Not sure if that would work since all requests are HTTPS...
> > > > Can you elaborate?
> > > >
> > > > Here are the modules I compiled in when I built Apache:
> > > > # ./httpd -l
> > > > Compiled in modules:
> > > >   core.c
> > > >   mod_access.c
> > > >   mod_auth.c
> > > >   mod_log_config.c
> > > >   mod_headers.c
> > > >   mod_setenvif.c
> > > >   mod_proxy.c
> > > >   proxy_connect.c
> > > >   proxy_ftp.c
> > > >   proxy_http.c
> > > >   mod_ssl.c
> > > >   prefork.c
> > > >   http_core.c
> > > >   mod_mime.c
> > > >   mod_status.c
> > > >   mod_dir.c
> > > >   mod_rewrite.c
> > > >   mod_so.c
> > > >
> > > >
> > > > On 9/27/06, Jim BAO <JXB6@nrc.gov> wrote:
> > > > > Did you try HTTP Connect?
> > > > >
> > > > > >>> jeff.deford@gmail.com 9/27/2006 10:35 AM >>>
> > > > > All:
> > > > >
> > > > > I have some questions regarding the way to implement
> > > > > Apache as a reverse proxy server using mod_rewrite in order to mask
the
> > > > > real
> > > > > URLs. Users will connect to the proxy, then the proxy will connect
to
> > > > > the real server that is listening on port 8050 (SSL)
> > > > >
> > > > >
> > > > > So far this is what I have working:
> > > > >
> > > > > Proxy server listining on port 80 and on 443 and I am
> > > > > using a rewrite rule to force a rediect to 443 only as shown below:
> > > > >
> > > > >  ## Redirect all incoming HTTP requests to HTTPS locally before
> > > > > proxying.
> > > > >  RewriteRule ^/(.*) https://proxy.server.com/$1 [R,L]
> > > > >
> > > > > This works just as expected as my initial http connection gets forced
> > > > > to https.
> > > > >
> > > > > Then I have the following proxy statements set up as shown below
for
> > > > > the default SSL virtual host on the proxy server:
> > > > >
> > > > >  ProxyRequests     Off
> > > > >  SSLProxyEngine    On
> > > > >  SSLProxyCACertificateFile conf/cacerts.crt
> > > > >  ProxyPreserveHost On
> > > > >  ProxyPass         / https://real.server.com:8050/
> > > > >  ProxyPassReverse  / https://real.server.com:8050/
> > > > >
> > > > > This all works great for all of the base URLs on the root level.
The
> > > > > home
> > > > > page URLs on the real server get rewritten and appear to have
> > > > > originated from the proxy server when I mouse over or
> > > > > click on a root-level URL.
> > > > >
> > > > > However, any URL with a subdirectory below the root level on the
real
> > > > > server does not get rewritten and the real URL (the complete URL
on
> > > > > the real server including the port number 8050) is visible on the
> > > > > proxied web page.
> > > > >
> > > > > Now, how do go I about getting this to work for all of the URLs with
> > > > > subdirectories? I have read through the documentation and I am stuck.
> > > > >
> > > > > Do I need rewrite rules for each URL that has a subdirectly below
the
> > > > > root with a subsequent ProxyPass and ProxyPassReverse statement?
> > > > >
> > > > > Do my rewrite rules need to use the proxy flag [P]? Or will they
work
> > > > > once written to mimic the root-level rules?
> > > > >
> > > > > Many thanks in advance for any help that you may provide....
> > > > >
> > > > >
> > > > > -=jeff
> > > > >
> > > > >
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