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DHCP Lease Renewal Problems
Authored by: JohnDavidson on Jul 06, '01 09:18:18AM

I fixed my DHCP problem, but boy do I feel foolish.

He's a word of warning to those having difficulty getting a DHCP IP lease renewals - be sure to check your network security firewall rules (if you use ipfw) and make sure that the ports needed by DHCP (67 and 68) are not blocked. I had tightened my firewall down so tight that I could no longer negotiate a DHCP lease once my initial lease (gained in the boot sequence before the firewall rules kicked in) expired.

Thanks to the very nice firewall utility Brickhouse ( I was able to review my firewall setup with "reasonable" settings that allow things like DHCP and NTP through, but still keep me pretty safe from most outsider threats.

Hope this helps someone.

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