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From: "Johnny Kewl" <john@kewlstuff.co.za>
To: "Tomcat Users List" <users@tomcat.apache.org>
References: <17809837.post@talk.nabble.com>
Subject: Re: mapping tomcat to ip address behind router
Date: Fri, 13 Jun 2008 06:07:42 +0200
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----- Original Message ----- 
From: "illusion" <sanjay_sss@hotmail.com>
To: <users@tomcat.apache.org>
Sent: Thursday, June 12, 2008 11:14 PM
Subject: mapping tomcat to ip address behind router


>
> Hey,
>
> I want to set-up tomcat to serve http requests from behind a router.  When
> there is a direct internet connection and no router, and the address
> property is added and port number is changed in server.xml as below in
> example 1, tomcat serves requests fine for http://99.153.32.456.
>
> When I set it up to run behind a router as show in example 2, with the
> router forwarding requests to 192.168.0.54 which is the computer behind 
> the
> router with tomcat, it does not work for the url http://99.153.32.456. 
> What
> is the correct way to set it tomcat behind a router?
>
> thanks in advance for your assistance
>
> Example 1 - no router - works
>
> <Connector port="80" protocol="HTTP/1.1"
>               connectionTimeout="20000"
>               address="99.153.32.456"
>               redirectPort="8443" />
>    <!-- A "Connector" using the shared thread pool-->
>    <!--
>    <Connector executor="tomcatThreadPool"
>               port="80" protocol="HTTP/1.1"
>               address="99.153.32.456"
>               connectionTimeout="20000"
>               redirectPort="8443" />
>    -->
>
> Example 2 - behind router - does not work
>
> <Connector port="80" protocol="HTTP/1.1"
>               connectionTimeout="20000"
>               address="192.168.0.54"
>               redirectPort="8443" />
>    <!-- A "Connector" using the shared thread pool-->
>    <!--
>    <Connector executor="tomcatThreadPool"
>               port="80" protocol="HTTP/1.1"
>               address="192.168.0.54"
>               connectionTimeout="20000"
>               redirectPort="8443" />
>    -->

illusion, you have now probably screwed up the TC config...
Reload the the standard TC config, and just change the 8080, to 80, dont 
touch other stuff for now.

Then google, I think you have one of those ADSL Nat Router things
Heres an article with someone else struggling along
http://sanzon.wordpress.com/2008/04/04/setting-up-web-server-behind-router-wrt54g2/

Whats probably screwing you up is even though you have it forwarding, the 
IP's internally are being dynamicly assigned, you have to give the server a 
fixed IP, typically this is not the ISP IP, its the machine IP, and then you 
need to check the machine and make sure its using your router as the 
gateway.

Its not really a TC thing, best thing is to look at the router name and 
google for it and web server.
These little box's now a days have some amazing functionality, so you need 
to find the manual for the thing.

You need to check the Dynamip DNS is not on, DHCP is not assinged to the 
server, the DNS discovery is set or on auto, the network masks are right 
etc.
If your SP supplied the router, they "should" know how to set the thing up, 
dont mention tomcat, its got nothing to do with it, just tell em its a web 
server on a machine.... if that works, TC will work.

And then learn to do things like ping a machine etc.

Have fun....


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