To share what I've learned !

Even though I worked with NAT configuration it still troublesome when configuring NAT on the Cisco Router (I prefer the Mikrotik way of configuration, simple but powerful). First in the Cisco NAT world we have to understand these 4 terms. Directly taken from Cisco [1] • Inside local address—The IP address assigned to a host on the inside network. This is the address configured as a parameter of the computer OS or received via dynamic address allocation protocols such as DHCP. The address is likely not a legitimate IP address assigned by the Network Information Center (NIC) or service provider. • Inside global address—A legitimate IP address assigned by the NIC or service provider that represents one or more inside local IP addresses to the outside world. • Outside local address—The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from an address space routable on the inside. • Outside global address—The IP a