【#49 ネットワーク CCNA CCNP 講座】NAT NAPTってなんだ？

Thank you for watching. This is Masaru. I started studying to pass the Network Specialist exam in the fall of 2020. I'll do my best to provide useful information for anyone studying networking. Please also use this for CCNA and CCNP preparation. -Study Notes- [Today's Mission] About NAT and NAPT Show your thoughts! NAT, NAPT Address translation technology Generally, it translates between private IP addresses and global IP addresses. It can also translate a global IP address to another global IP address, or a private IP address to another private IP address. You can check your current global IP address at the following website: cman.jp:https://www.cman.jp/network/support/g... NAT One-to-one translation It does not conserve IP addresses because multiple global IP addresses cannot be shared. Used when you want to hide a private IP address. Private IP address Global IP address 192.168.0.1 126.34.110.40 192.168.0.2 126.34.110.41 NAPT (IP masquerading) Many-to-one translation Mapping multiple private IP addresses to a single global IP address. For this reason, IP addresses and port numbers are also used in combination. Private IP address Source Global IP address NAT generation Port number Port Number 192.168.0.1 50000 126.34.110.40 2800 192.168.0.2 50001 126.34.110.40 2801 Demonstration Let's observe NAPT in action with a packet tracer! -Study Notes-