Fortinet F40 no longer lets me access 192.168.1.99

[Wimmera-Computers]

After accessing the dashboard once, I cannot get into it again as it says constantly - "This site cannot be reached".  I have checked that the cable is inserted into port 1.  I have changed the DHCP in the computer to a static 192.168.1.1 /255.255.255.0 and still it won't connect.

All I did yesterday was change the LAN set up in the dashboard from Manual to DHCP.  Now the F40 will not let me into the dashboard.

[seshuganesh]

Hi Team,

Please connect to console of the firewall and execute these commands:

diag sniffer packet any 'host <sourceip> and port' 4 0 a (here in place of port keep admin port number)

Once you access the admin page, it will generate some logs please share it with us

[gfleming]

If you changed the LAN interface from manual (previously set to manual static IP of 192.168.1.99/24) to DHCP then of course you have lost the ability to connect to 192.168.1.99.

If there is actually a DHCP server on that network please find out which IP address was assigned to the FortiGate and try connecting to its new IP address.