With NAT enabled, the router will modify the IP header in outgoing packets so that the source address matches your Internet public address (and vice versa for incoming packets). If you disable NAT, it won't do that anymore. So, basically, you will be sending IP packets with private source IP address (e.g. 192.168.x.y) on the Internet, which of
router - What is strict, moderate and open NAT? - Server Fault Your router is listening on port 4040 after you initiate the connection. If they try to talk to your router on a different port, the router NAT table has no mapping for the new port and drops it. If you allow port 4444 to be forwarded to a specific IP in the NAT/PAT config, … How to Use Your Router and ISP’s Modem/Router Combo In Tandem Jul 10, 2017 Linksys Official Support - How to configure One-to-One NAT
EdgeRouter - Destination NAT – Ubiquiti Networks Support
NAT works with a router to allow private IP's to be routed across a public network. A router doesn't do this on it's own, either NAT or PAT is in play there. I've never heard as NAT working as a firewall as well. NAT is also a 1 for 1 exchange, meaning only 1 private IP can use 1 public IP at any given time. NAT should I enable? - Linksys Community The "firewall" in the router primarily protects the router, and provides only mimimal protection for your computers. It is actually the NAT that is doing most of the "protection" work on your network. The NAT is doing a job that is similar to what a software firewall does. How to configure One-to-One NAT on Safestream routers
Double Trouble: How to Deal with Double NAT on Your Network
What is Network Address Translation (NAT)?