JSON RPC Authentication

[vineetaparodkar]

How these RPC URL endpoints (https://edge-docs.polygon.technology/docs/get-started/json-rpc-commands) are secured in a private network setup?

1. In a private network setup with POA consensus can RPC endpoints be secured so only participants of network can communicate within the network or is it accessible to any client/node ? Are there any authentication mechanisms available? Eg: besu client provides JSON-RPC Authentication with JWT [https://besu.hyperledger.org/en/stable/HowTo/Interact/APIs/Authentication/]

2. Does polygon edge has support for IPC, which is supported in geth?