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From John Turner <>
Subject Re: Tomcat 4.1, Standalone, Port 80, Coyote
Date Mon, 14 Apr 2003 19:14:44 GMT

In my opinion, you can't go wrong with the O'Reilly books, and if you look 
around, a lot of times you can get their "bookshelf" series at a good 
price.  The bookshelf series will put 5-8 books on CD-ROM, and include one 
of the books in hard copy format as well. (absolutely key, in my opinion) (very nice bookshelf series)


On Mon, 14 Apr 2003 12:05:09 -0700 (PDT), Dan Tarkenton 
<> wrote:

> John, I completely agree with you.  This concept of running tomcat as 
> root will only happen for a demo.  We will have to (and plan to) 
> configure tomcat with apache in the next iteration of our application. 
> Nevertheless, I truly appreciate everyone's comments and advice.  As it 
> turns out, it seems I really need to learn some basic linux concepts.   I 
> don't know if this thread completely goes off topic [OT] if I risk this 
> next question, so if it does or doesn't belong on this mailing list I 
> will withdraw the question. I need a linux reference book.  Basic 
> conceptual information along the lines of piping, grep, etc.  Basic 
> stuff.  I hear the O'Reilly 'in a nutshell' books are good.  Any 
> thoughts?
> John Turner <> wrote:
> You get this file if you install the RPM. It is not part of the Tomcat 
> binary install for Linux. The RPM maintainer sets up files like this so 
> that installing the RPM does everything for you. Running processes as 
> root, especially on port 80, is not considered wise.
> John
> On Mon, 14 Apr 2003 11:30:40 -0700 (PDT), Dan Tarkenton wrote:
>> Well, I knew this had to do with being a linux newb. There is a file 
>> present on the linux installation of tomcat that is not present in the 
>> windows installation. That file is the conf/tomcat.conf file. 
>> Apparently, there is a property called TOMCAT_USER which was originally 
>> set to tomcat4, and once changed to root everything worked fine. Is 
>> there no concept of this file in a windows installation? I am just 
>> trying to understand the difference between tomcat installed on linux 
>> vs. installed on windows.
>> "PELOQUIN,JEFFREY (HP-Boise,ex1)" wrote:If you set the port to 8080 and 
>> start it from the root account you are using
>> and do
>> ps -ef | grep java
>> what user does it say the JVM is running as?
>> This will also let you know if you have a JVM running that you did not 
>> you
>> have running
>> also to see if something is currently using port 80 try
>> netstat -an | grep LISTEN
>> -----Original Message-----
>> From: Dan Tarkenton []
>> Sent: Monday, April 14, 2003 12:05 PM
>> To: Tomcat Users List
>> Subject: RE: Tomcat 4.1, Standalone, Port 80, Coyote
>> Ok, that makes sense. I see a few replies here about being root to bind 
>> an
>> app to a port < 1024. I understand those are protected ports. So I am
>> acting as root on this linux server. Meaning I log into the machine as
>> root, configure tomcat, and try to start it. No luck. What exactly do I
>> have to do to bind an application to a port? I know that I have 
>> configured
>> tomcat to use port 80, but it is being denied the bind. So can someone
>> tell me explicity how to perform this bind? This is only a temporary
>> solution (for demo purposes) so I shouldn't have to worry about security 
>> for
>> now. Later we will configure tomcat to work with apache. Thanks a lot 
>> guys.
>> I am truly the linux newb. -Dan
>> "Shapira, Yoav" wrote:
>> Howdy,
>> On unix, only the superuser and other privileged accounts can open
>> server sockets on ports numbered less than 1024. Windoze doesn't have
>> this security feature by default. Either run on a >1024 port, run as
>> super user, for find another alternative (e.g. use apache front-end, as
>> apache supports better run-as directives).
>> Yoav Shapira
>> Millennium ChemInformatics
>>> -----Original Message-----
>>> From: Dan Tarkenton []
>>> Sent: Monday, April 14, 2003 12:36 PM
>>> To:
>>> Subject: Tomcat 4.1, Standalone, Port 80, Coyote
>>> Hello all. I have configured Tomcat 4.1 to act as a standalone and to
>>> handle requests submitted through port 80 on win2k pro platform. This
>> was
>>> obviously quite simple to do by editing the server.xml file. I simply
>>> changed the standalone Service's Coyote Connector port from 8080 to 80.
>>> Pretty simple. >className="org.apache.coyote.tomcat4.CoyoteConnector"
>> port="80"
>>> minProcessors="5" maxProcessors="75" enableLookups="true"
>>> redirectPort="8443" acceptCount="100" debug="0"
>> connectionTimeout="20000"
>>> useURIValidationHack="false" disableUploadTimeout="true" /> However, I
>>> tried to recreate this setup on Redhat 8.0. When I try to access
>>> http://localhost/foo, I receive a "connection refused message". I did
>> not
>>> get this before on the linux machine when I had the port set to 8080
>> (and I
>>> accessed http://localhost:8080/foo). I noticed that once I had the
>> port
>>> set to 80, and tried to start tomcat, that there were error messages in
>> the
>>> catalina.out log file. Basically the er!
>>> ror stated "SEVERE: Error Initializing endpoint.
>>> Permission Denied:80" This would explain why I am getting "connection
>>> refused" messages in my browser. What do I have to do to get tomcat to
>> bind
>>> to port 80? There must be some conflict. I have apache installed, but
>> it
>>> is not running. Perhaps apache has some lock or bind to port 80
>> somewhere?
>>> I'm lost here in the linux world. Any help would be greatly
>> appreciated.
>>> Thanks.
>>> ---------------------------------
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