LIST HOSTS IN NETWORK DEFINITIONS TO FIND IP ADDRESS THAT ARE NOT IN USE

Question

Hi experts, 
 There is some way to list all IPv4 adresses that are NOT in use in a specific network in Sophos UTM (via command line or Web GUI)? 
 Willing to know. 
 Thanks.

BAlfson · Accepted Answer

List all of the Host names followed by a list of all Host addresses in the same order: 
 cd /home; cc get_objects network host|grep \'name\'>hosts.txt ;cc get_objects network host|grep \'address\'>>hosts.txt 
 Download from /home using WinSCP and manipulate with a spreadsheet. A real 'nix guru could probably come up with a better solution. 
 In WebAdmin, on the 'Network Definitions' tab, you can select to just see "Hosts" at the top instead of "All" definitions. 
 Cheers - Bob

BAlfson · Answer

To list the IPs that have been "seen" by the UTM in the last 7 days: 
 /usr/local/bin/count_active_ip.plx --showcount 
 If you suspect that there are assigned IPs that haven't been active, and your LAN is 172.20.20.0/24, you can list assigned addresses: 
 cc get_objects network host|grep address|grep '172\.20\.20\.' 
 Cheers - Bob

LIST HOSTS IN NETWORK DEFINITIONS TO FIND IP ADDRESS THAT ARE NOT IN USE

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