To modify the LAN group (Figure 4.5) you just have to click on the name. You can insert a new origin group clicking on Insert link. Settings:
Machine groups: You can associate to this group an existing machine group;
Machines: Lists the machines that are registered in IPBrick and provides direct association to the origin group;
IP subnets: Provides subnets association, defining the network IP and its mask;
IP machines: Provides machine association to the group by IP;
IP ranges: You can set IP ranges with proxy access.