Private IP addresses

Private IP addresses

There are three blocks of IP addresses set aside for use in private networks. This allows organizations to implement IP addressing without having to apply to an ISP for unique global IP addresses for every host. Because these addresses are blocked by the global Internet routing system (the routers will drop packets from these addresses), the address space can simultaneously be used by many different organizations. However, hosts using these private addresses cannot be reached directly from the Internet (nor can they communicate to the Internet). If your NiagaraAX devices are on a VPN or all on the same LAN/WAN, you can assign private IP addresses to them, as required. The following list includes the sanctioned private addresses for each class.

Class A - 10.0.0.0 to 10.255.255.255
This provides one network of 16,777,216 hosts

Class B - 172.16.0.0 to 172.31.255.255
This range provides 16 networks, each with 65,534 hosts

Class C - 192.168.0.0 to 192.168.255.255
This address range provides 254 networks, each with 254 hosts

To use the security of private IP addressing and the flexibility of public addressing, NiagaraAX devices and networks may be configured to use network address translation with one or more of the following: proxy servers, firewalls, or routers.