cisco ccna 300-125

cisco ccna 300-125.Class C 192.168.0.0.192.168.255.25522.1.3 Address TranslationTo address the connectivity issues of RFC 1918, another standard, RFC 1631, was developed that defines the Network Address Translation (NAT) process, which allows you to modify the IP address in a packet. When communicating with devices on the public network, internal corporate devices need to use the public address as the source address. Address translation allows you to convert an internal private address to a public address before the packet leaves the corporate network.Common devices that can perform address translation include firewalls, routers, and servers. Typically, address translation is done at the network perimeter by firewalls and routers.In fact, RFC 1631 does not specify that the modified address must be a private address; it can be any address. Obviously, you do not own the address space, but address translation allows you to keep your current addressing scheme and convert those source addresses to the addresses assigned to you by your ISP before the packets enter the Internet.Keep in mind the reasons for using address translation in your network.Here are some common reasons for using address translation. . The public IPv4 address assigned to you by your ISP is insufficient and you must use a private address.. You were previously using public addresses, but when you change ISPs, the new ISP does not have the right to assign these public addresses to you.. Merging two companies' networks that use the same address space (for example, 10.0.0.0) can cause routing and reachability problems.. You want to assign the same IP address to multiple machines so that users of the Internet ± think they are the same computer.