Date: Sun, 08 Oct 2017 08:42:08 -0400 From: Ernie Luzar <luzar722@gmail.com> To: Erwan David <erwan@rail.eu.org> Cc: freebsd-questions@freebsd.org Subject: Re: forcing new dynamic ip address Message-ID: <59DA1D20.3090108@gmail.com> In-Reply-To: <7531e98e-6910-0853-b4e2-a3fe92bfb694@rail.eu.org> References: <59DA19E8.5000602@gmail.com> <7531e98e-6910-0853-b4e2-a3fe92bfb694@rail.eu.org>
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Erwan David wrote: > Le 10/08/17 à 14:28, Ernie Luzar a écrit : >> Hello List; >> >> I have a "home service" account from my ISP. The ISP issues an dynamic >> ip address which has not changed in 12 years. >> >> My host has 2 NICs, one which is not used. I know if I plug the internet >> cable into the un-used NIC and make the appropriate config changes and >> reboot I will get a different dynamic ip address. >> >> Is there a simpler way to expire the lease to force the ISP dhcp to >> refresh with a different dynamic ip address? >> >> The goal is to have a cron job that gets a different dynamic ip address >> assigned to my host's front door every a week. >> >> Just another level of security to make it very hard for the script >> kiddies from finding any open ports I may have. >> >> Thanks for the help. >> > > DHCP protocol states that the server should try to give you the same IP > address. And dhcp servers keep track of the addresses they allocated in > the past, to give them back if possible. > Yes I know that. The question is there a way to request their dhcp server to over ride that default behavior?
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