Can the default GlusterFS port for brick processes be changed?

Issue

• Is it possible to change the ports that GlusterFS bricks listen on. i.e. from 49152+ back to 24009+ as used in GlusterFS 3.3 (RHS 2.0).
• In our environment we have many firewalls that restrict the flow of data in our networks. The fact that these port changes were not documented in the RHS 2.1 release notes, we now are unable to mount Gluster file systems in our environment without extensive firewall rework and testing.