If you go to you will see a public IP no matter how they have you configured; the question is whether that address matches what your computer thinks its IP address is - if they don't, you're being NAT'd.
You can check whether you're on a CGN network by visiting a Web site such as ipaddress.com or whatsmyip.com and comparing the IP address listed to the public/WAN IP address assigned to your Internet gateway. To find your gateway's public IP address, check the status page in the administrative interface.
Carrier-grade Network Address Translation (abbreviated as CGNAT) is an IP address provisioning method using a private IP address block used by Internet Service Providers where IPV4 is limited. PLDT rivals Globe Telecom and Converge ICT extensively uses CGNAT as well.
If you have a standard Spectrum Internet connection, then it's most likely not CGNAT. That is usually used for cellular connections. The router portion takes the incoming internet IP address (WAN) and re-distributes it to your local network under a different set of IP address (LAN).
Usually no. It technically could, but it doesn't have to – there is no need for NAT in this situation.
Is a router a firewall? Yes, the rumors are true: wireless routers automatically do the job of a basic hardware firewall. Firewalls are designed to repel any external internet traffic that tries to gain access to your internal network (a.k.a. the network of devices connected to your router).
How Can I Tell If I'm Behind a Firewall?
- Click "Start" and "Control Panel."
- Choose the "Security" section. Select "Windows Firewall."
- Check the setting "Turn Windows Firewall on or off" to see if your built-in Windows firewall is turned on.
- Check your system tray for firewall software running in the background.
The shared IPv4 address space (defined in RFC 6598) is non-private IPv4 address space that the service providers can use to deploy carrier-grade NAT (CGN) services.
Carrier Routing System (CRS) is a modular and distributed core router developed by Cisco Systems Inc that enables service providers to deliver data, voice, and video services over a scalable IP Next-Generation Network (NGN) infrastructure.
How does NAT work? A. Basically, NAT allows a single device, such as a router, to act as an agent between the Internet (or public network) and a local network (or private network), which means that only a single unique IP address is required to represent an entire group of computers to anything outside their network.
NAT64 is an IPv6 transition mechanism that facilitates communication between IPv6 and IPv4 hosts by using a form of network address translation (NAT). The NAT64 gateway creates a mapping between the IPv6 and the IPv4 addresses, which may be manually configured or determined automatically.
How to set up an IPv6 Internet connection on the Wi-Fi Routers (new logo)?
- Log in to the web-based interface of the router.
- Go to Advanced > IPv6.
- Enable IPv6 and select the internet connection type provided by your ISP.
- Fill in information as required by different connection types.
- Configure LAN ports.
Port forwarding tells a router: When a connection request comes through a specific port (that you specify), send that connection to a specific device (of your choosing). Your other devices will remain unaffected by this rule. Learn how to set up port forwarding.
IPv4 Private Address Space and Filtering
- 10.0. 0.0/8 IP addresses: 10.0. 0.0 – 10.255. 255.255.
- 172.16. 0.0/12 IP addresses: 172.16. 0.0 – 172.31. 255.255.
- 192.168. 0.0/16 IP addresses: 192.168. 0.0 – 192.168. 255.255.
“The Telstra network will continue to support both IPv4 and IPv6 for the foreseeable future,” the spokesperson said. APNIC in 2011 exhausted its pool of IPv4 addresses.
Port forwarding allows remote computers (for example, computers on the Internet) to connect to a specific computer or service within a private local-area network (LAN). External hosts must know this port number and the address of the gateway to communicate with the network-internal service.
By 2018, Telstra had hundreds of thousands of mobile devices using IPv6, mainly dual-stack iPads. Unsurprisingly, therefore, CGNAT has played a prominent role at Telstra in the intervening years.
