Yes - if it isn't obvious (which is should be to anyone here) this was probably used as an beta method for a control/communication channel protocol, Probably inter device only (not meant for a user or support). Built by a programmer who was told to 'get the communication working for this new feature we want to implement'. So he hacked open a hole with a very large cudgel where he should have used a scalpel.
Source: Fortinet admin