Document URL: 
https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.3/html/administration_guide/chap-getting_started

Section Number and Name: 
Chapter 3, Table 3.1: TCP Port Numbers

Describe the issue: 
The description for the brick ports seems out of date and unclear. I have had two customers now have misconfigured firewalls because they didn't understand the requirements for the brick port range.

Suggestions for improvement: 
Change the description for the 49152 - 49251 range to something like:

Each brick for every volume on the host requires its own port for communications with GlusterFS clients. For each brick, one port will be used starting from 49152. Sizing must be considered for the expected maximum of concurrent volumes to determine what the exact range of ports should be.