I understand that port 2124 is used only for internode communication in a clustered environment. In an independent software gateway nodes, is it safe to disable the same?
Appreciate if someone from the product management help answer the same?
I don't think so. The port 2124 is for Controller to talk to gateway, even for a stand alone gateway.
You may think of limiting the port 2124 for internal access only by adding advanced firewall rule from policy manager -> Transports -> Manage listen ports -> Manage Firewall Rules button -> Advanced Create
Here is an example,