-NAT is the process of mapping one IP to another IP
-NAT is used to save public IP
-It provides security by hiding the internal IP
Types of NAT
-Static NAT (one to one)
-Practically what we do is dynamic source or destination NAT which depends on the purpose
-In case of accessing a public hosted web server, we are using a dynamic destination NAT rule, where all the requests coming to the public IP of that web server will be mapped to a internal private IP
-A group of internal users accessing internet can be done using a dynamic source NAT rule, where all the internal requests are mapped to a external public IP
-NAT is used to save public IP
-It provides security by hiding the internal IP
Types of NAT
-Static NAT (one to one)
- One private IP is mapped to one public IP
- Generally used for hosting public servers
- Many private IPs are mapped to many public IPs
- Can only be configured for outbound trafiic
- Many private IPs are mapped to one public IP
- All users can access internet at the same time
- Can only be configured for outbound traffic
-In case of accessing a public hosted web server, we are using a dynamic destination NAT rule, where all the requests coming to the public IP of that web server will be mapped to a internal private IP
-A group of internal users accessing internet can be done using a dynamic source NAT rule, where all the internal requests are mapped to a external public IP