To enable crew to checkIn in the airport on a company PC you need to specify the IP credentials for the given PC.
Set a static IP or use wildcards. Use the calculator to verify the IP Address.
IpAddress1 is mandatory.
If there are more than one checkin desk you can use a range of IP addresses.
In that case IPAddress1 and IPAddress2 is mandatory
Ip-range is calculated by IP and Netmask.
IPAddress1 and Netmask is mandatory.
CIDR (Classless Inter-Domain Routing, sometimes called supernetting) is a way to allow more flexible allocation of Internet Protocol (IP) addresses than was possible with the original system of IP address classes.
IP-range is calculated by IP and CIDR.
IPAddress1 and CIDR is mandatory.