What are the solutions for sending ping responses through a carrier-grade NAT?
What are the solutions for sending ping responses through a carrier-grade NAT?
Google indicates that your ISP (Jio in India) employs Carrier Grade NAT. If you're behind a CGNAT, it's relevant whether your public IP responds to pings. Is this a security concern? GRC's 'Shields Up' confirms that your public IPv4 address is indeed responding to pings. I use the Wi-Fi hotspot on my 5G phone for all my home internet activities, which means my home connection relies mainly on 5G/4G data. Jio serves a large customer base with millions of users.
It doesn't matter. Even if it did, you couldn't do anything about it since the ISP controls everything.
You need to understand that NAT simply translates different external port numbers on the public IP address into private IPs and ports for various devices.
The default ping method just maps to an IP and port that responds, which is probably a device owned by the ISP.
Just like all other traffic going to the public IP, CGNAT ensures each user receives only their own traffic.
Alright, here you go.
Thanks for the update.
I'm glad it's not something I have to be concerned about.