LinuxQuestions.org - Deploying web based "information center"- 'Fail to connect Error'

I want to deploy an Eclipse standalone "InfoCenter". I don't use Eclipse, but I am a technical writer with some rudimentary Linux experience.

When I researched nice, slick and simple online Help systems that follow standards, the Eclipse system stood out. In fact I even found an IBM site where I could download, install and launch this system: http://www.alphaworks.ibm.com/tech/iehs

The help system code is a collection of Java Server Pages and servlets, along with an embedded Web application server, a search engine, and the Eclipse run-time environment.

I obtained a 'cloud hosted' Linux server--RHEL 5.1 64 bit, with Apache 2.2.
I can SSH into the 'box' as root. I have installed this 'InfoCenter server' in:
/usr/bin/ibm_help

I launched the InfoCenter server, editing the start command (within a shell script) to use port 8081.

I believe the InfoCenter server is running because I can see 2 java processes that weren't there before I launched it... and see it listening to port 8081:

command line output below

Code:

# ps -a

  PID TTY          TIME CMD

17133 pts/1    00:00:00 ps

17943 pts/0    00:00:00 bash

17944 pts/0    00:00:00 java

17955 pts/0    00:00:01 java





# /usr/sbin/lsof -i :8081

COMMAND  PID USER  FD  TYPE DEVICE SIZE NODE NAME

java    17955 root  33u  IPv6 262880      TCP *:tproxy (LISTEN)





# netstat -nlp | grep ::8081

tcp        0      0 :::8081        :::*      LISTEN      17955/java

However, when I go to http://mysite_ipaddress:8081 in Firefox it churns for a bit then displays a
'Failed To connect' Error: “Though the site seems valid, the browser was unable to establish a connection.”

In Opera it gives: 'Error! Connection closed by remote server'

Being so new to this whole thing... I also tried a few more things to no avail:
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A more specific URL (from the instructions I have read I *think* this should at least do something) but got the same result.
http://mysite_ipaddress:8081/eclipse/plugins/org.eclipse.help.webapp_3.3.100.v20080528/index.jsp

To try to rule out incompatibility (the IBM package download recommends Linux 32 not 64), I installed a different java runtime for this system
(jre-6u12-linux-i586.bin) and ran the InfoCenter using that java instead of the IBM-included jre with the 'InfoCenter download." Same results (as expected).

My linux cloud hosted 'server' does work-- it displays the apache default page if I go to http:// mysite_ipaddress (no port reference) or if I specify port 80. It's just that most other port specifications display the 'Fail to Connect Error'
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Thanks for any suggestions you can provide :)