The wiki page 2.4.2.1 Recommended Ports (https://community.i2b2.org/wiki/display/getstarted/2.4.2.1+Recommended+Ports) provides unclear guidance as to which JBoss port i2b2 uses by default.

At the top of the page it says: "The i2b2 recommends you use the default port of 8080 for your http connection"

Then: "1. Change the non-SSL HTTP/1.1 Connector to another port such as 9090"

And finally a warning that makes it sound like you should not change the default port: "The i2b2 install scripts are using port 8080 for JBoss. Therefore if you are changing the above ports in your standalone.xml file then you will need to make the same port changes to all the install scripts"

However, it seems that the install scripts and configuration are using 9090, so perhaps the recommendation to use 8080 and the warning that the install uses 8080 should both be deleted and the instructions should be updated to clearly state the port must be changed to 9090 for an i2b2 install with un-modified config files.