Date: Tue, 10 Oct 2017 00:37:17 +0000 From: "Mire, John" <jmire@lsuhsc.edu> To: Ernie Luzar <luzar722@gmail.com>, Erwan David <erwan@rail.eu.org> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: RE: forcing new dynamic ip address Message-ID: <0B62814C161EBA4BB69C995965D04C70F00305DB@SH-ExchMB2.master.lsuhsc.edu> In-Reply-To: <59DA1D20.3090108@gmail.com> References: <59DA19E8.5000602@gmail.com> <7531e98e-6910-0853-b4e2-a3fe92bfb694@rail.eu.org> <59DA1D20.3090108@gmail.com>
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Used a /etc/daily.local entry to generate new mac address to get a new IP address from my ISP, you could run a cron job to do it instead. -----Original Message----- From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Ernie Luzar Sent: Sunday, October 8, 2017 07:42 To: Erwan David <erwan@rail.eu.org> Cc: freebsd-questions@freebsd.org Subject: Re: forcing new dynamic ip address *EXTERNAL EMAIL: EVALUATE* 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? _______________________________________________ freebsd-questions@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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