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> Date: Sun, 2 Mar 2008 18:16:24 +0100
> From: [EMAIL PROTECTED]
> To: users@tomcat.apache.org
> Subject: Re: mod_jk or mod_proxy_ajp - encryption benefits?
> 
> James Ellis schrieb:
> > I know that mod_jk is the battle tested connector between Apache and
> > Tomcat, but as I understand it the SSL connection generally
> > terminates at the Apache web server and the traffic between Apache
> > and Tomcat (to the AJP connector) is unencrypted.  Two questions:
> > 
> > 1) Does mod_proxy_ajp provide for any encryption between the web
> > server and the app server (Tomcat) that mod_jk does not?
> 
> No, the AJP13 protocol does not support encryption. Both connectors use 
> the same protocol. If you need to use encrypted traffic with AJP13, you 
> could tunnel through an encrypted channel.


Is this the common practice then when communicating from the web server to the 
application server?  

If not, it seems like an awfully big security hole, since the DMZ is supposed 
be only "partly" safe.  If someone were to crack into the DMZ and could sniff 
network traffic, then they could in theory listen in to traffic and grab all of 
it in an unencrypted state (which may include credit card information, 
usernames, passwords etc).




> 
>  > 2) If the
> > answer to number 1 above is "NO".  Is it possible to keep the server
> > certificates on the app servers and so that the connection from the
> > client to the app server is encrypted all the way through?  In this
> > case the apache web server would simply function as a load
> > balancer/failover solution.
> 
> Again no. We are talking about a reverse proxy situation and as far as I 
> know, you can't reverse proxy https without having an ssl endpoint on 
> the apache httpd.
> 
> For a normal (forward) proxy, httpd supports connect, but I don't know 
> how well this works in the real world.
> 
> You could also ask on the httpd users list, maybe they know better.
> 
> > Thanks, Jim
> 
> Regards,
> 
> Rainer
> 
> 
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