Subnets and subnet masks

Remote client nodes typically connect over a VPN or from behind a NAT. When creating a subnet configuration to capture these client nodes, you need to know which path the client node will take.

A client connecting over a VPN typically has more than one (1) IP address defined, but can connect through the VPN IP address. To capture client nodes connecting through a VPN, create a subnet configuration representing the VPN IP address range.

Client nodes connecting through a NAT typically have only one (1) IP address defined. To capture client nodes behind a NAT, create a subnet configuration representing the internal (usually private) IP range.

Work with the site IT network administrator to obtain appropriate subnet and subnet mask settings that cover the range of IPs to be recorded.

Sample configurations

Subnet 10.56.2.0 (Network address/Subnet ID)

Subnet Mask 255.255.255.0

In this configuration, the Starting Host is 10.56.2.1 and the Ending Host is 10.56.2.254 (a total of 254 workstations).
Subnet 10.56.2.0 (Network address/Subnet ID)

Subnet Mask 255.255.255.224

In this configuration, the Starting Host is 10.56.2.1 and the Ending Host is 10.56.2.30 (a total of 30 workstations).
Subnet 10.56.2.32 (Network address/Subnet ID)

Subnet Mask 255.255.255.224

In this configuration above, the Starting Host is 10.56.2.33 and the Ending Host is 10.56.2.62 (a total of 30 workstations).