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From Markus Schönhaber <>
Subject Re: Define tomcat ports
Date Fri, 10 Aug 2007 14:55:10 GMT
Milanez, Marcus schrieb:

> We need have two tomcat instances (different versions, 5.0.xx and
> 6.0.xx) running in the same server. We need it because we have some web
> applications deployed in Tomcat 5 which don't start in Tomcat 6. We
> won't have enough time to migrate all the applications to adhere some
> Tomcat 6 issues, so we need this scenario for a while.
> I would like to know whether there are port numbers restrictions, or I'm
> free to configure any number I like...

The actual values of the port numbers Tomcat is told to bind to don't
Nevertheless the "natural" restrictions apply. For example, no two
applications can bind to the same port, on unix-like systems you'll need
root privileges to bind to ports < 1024.

Especially: if you want to run two Tomcat instances, you'll have to make
sure that all ports one instance listens to are different from all ports
the other (or any other application on the machine) listens to. This
applies to all configured Connectors and the shutdown ports (unless you
use jsvc).


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