Am new to this forum though have been managing Fortinet for a year now. We changed our Local IP from /24 to /22 and all of a sudden two issues developed.
1. Some range of IP will not get internet connection steadily, the will connect and thereafter never to connect to internet.
2. We have whitelisting implemented on the Firewall 50E, some sites that have been whitelisted are no longer allowed after the local IP was changed. Have to create a policy and add these sites into the policy before the can pass through.
Please what could be the cause of these issues and what is the solution.