NAT contained by cisco Reg.? How to configure NAT .... what is NAT pool
How to configure NAT .... what is NAT pool and overload ..
What is the different between static and dynamic NAT... Plase any one tell me the answer contained by detail..
Answers: Wow, that's a big question!
You give the impression of being to write like you know something just about networking which is perfect, you'll need to follow Layer 3 very economically to understand NATing.
Basically NAT (Network Address Translation) allows routers and other devices to costume or hid IP address from the outside world. For example, your small home router is doing it now. Your computer is probably using an address of 192.168.0.100/24 or something similar, but the outside world see you as 66.12.100.171/20 (not really, but a different address).
Your router is keeping track of all of your address and traffic and it "translates" the source IP address surrounded by all of the packet you send to the internet - change it from your internal IP to the IP of the router. It then watches to see when traffic comes put money on and it then translates the destination address contained by the inbound packets near your internal address.
So in effect, not a soul on the internet know your real IP address, with the sole purpose the IP address of your router.
Static vs. Pooled NAT - static means that respectively host, computer, on the inside is mapped to equal IP on the outside, usually the one external IP of the router/firewall. Pooled NAT just mode that there is a group of external IP's that are used dynamically. You might not show up as indistinguishable IP to people on the internet every time you connect.
NAT Overload is a moment ago introducing port address translation (PAT) as well. If you're not adapted with port, basically think of them as approaching a room number where the IP address is similar to a building number. It would be written like this 192.168.1.1:80
That is representing port 80 on the computer - the port to be exact usually associated with http (websites). Well the router i.e. enabled for NAT overload will change the source IP port number to hang on to track of who is who on the inside of the network. This is handy when two comptuers on the inside of the meet people are connecting to the same host on the outside. The will appear to own the same source IP, but since the router is shifting the port, it will properly redirect the traffic to the right computer on the inside.
Note that within the second paragraph I was writing IP address using CIDR, that is I be showing the network blanket or the number of bits in the introduce yourself mask i.e. 192.168.1.1/24 - that 24 bits surrounded by the network covering or a Class C address. (there's a lot to IP, much more than I could explain within this article ;-)
Please note that I've be talking aobut IPv4 and not the bright IPv6.
I know I didn't even touch how you config a cisco router as it's somewhat dependant on the IOS and model, but Cisco's website has some great info on that.
Hope this help, but I'm sure you'll be able to search out for the terms and revise much more than I know about this.
Good luck!