Add/Modify IP Address Group
This function helps you add/modify an IP address group.
Operation Procedure
  - Select the User tab, and then in the navigation tree click User Access Policy > Portal Service > IP Group  to enter the Portal IP Group page. 
- Click Add or click  corresponding to an IP address group in the IP address group list. corresponding to an IP address group in the IP address group list.
- Enter an IP group name, a start IP address, an end IP address, an action, and so on.
- Click OK.
Precautions
  - The end IP address you set in adding/modifying an IP address group must be greater than or equal to the start IP address. 
- If two IP address groups contain same IP addresses, these two IP address groups overlap. For  example, IP address group A contains addresses from 192.168.0.1 to 192.168.0.100. IP  address group B contains addresses from 192.168.0.100 to 192.168.0.200. IP address group A and  IP address group B overlap. Specially, when used for NAT, two IP address groups are considered overlapped only if they contain the same IP address(es) before and after NATed.
- If you add an IP address group without selecting a service group, the default group named Ungrouped is applied. 
- When modifying an IP address group, you cannot change the name of the group. 
- When you modify an existing IP address group, the associated service group cannot be modified.