Technically, Aurora itself isn't a stealth server, but it connects to them. When setting up Aurora, you are often given a choice of server configurations.
However, I need to be upfront:
In the current modding community, the consensus is that paying for a server is an investment in safety. The cost of a subscription (usually monthly) is significantly cheaper than buying a new Key Vault (KV) every time your console gets banned. best free stealth server for xbox 360