Tag Archives: DHCP

Counting active leases on an old ISC DHCP server

Intro Checkpoint Gaia offers a DHCP service, but it ias based on a crude and old dhcp daemon implementation frmo ISC. Doesn’t give you much. Mostly just the file /var/lib/dhcpd/dhcpd.leases, which it constantly updates. A typical dhcp client entry looks … Continue reading

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The IT detective agency: rogue IPv6 device messes up DHCP for entire subnet

Intro This was a fascinating case insofar as it was my first encounter with a real life IPv6 application. So it was trial by fire. The details I think the title of the post makes clear what happened. The site … Continue reading

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