Date: Sun, 30 Jan 2000 18:17:59 -0600 (CST) From: Igor Roshchin <igor@physics.uiuc.edu> To: security@freebsd.org Subject: ntpd configuration and strange time "jumps" Message-ID: <200001310018.SAA07833@alecto.physics.uiuc.edu>
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Hello! Two questions regarding xntpd: 1. I've noticed that there were a few rather strange time steps: (it's the first time I see it changing back and force without any visible reason) Jan 28 19:58:45 <ntp.notice> myhost xntpd[144]: time reset (step) -0.244614 s Jan 28 21:04:09 <ntp.notice> myhost xntpd[144]: time reset (step) 0.353294 s Jan 29 19:20:11 <ntp.notice> myhost xntpd[144]: time reset (step) -0.134634 s Jan 30 03:03:14 <ntp.notice> myhost xntpd[144]: time reset (step) -0.135647 s Jan 30 15:50:57 <ntp.notice> myhost xntpd[144]: time reset (step) -0.150918 s Jan 30 16:29:31 <ntp.notice> myhost xntpd[144]: time reset (step) 0.290430 s Jan 30 17:25:10 <ntp.notice> myhost xntpd[144]: time reset (step) -0.163771 s I did not see any problems with the network or with the servers, my xntpd is connecting to. The version of the xntpd used on a FreeBSD 3.4-STABLE box is reported below. Jan 30 18:57:27 <ntp.notice> myhost xntpd[75127]: xntpd version=3.4e (beta multicast); Thu Jan 6 20:53:51 EST 2000 (1) Jan 30 18:57:27 <ntp.notice> myhost xntpd[75127]: tickadj = 5, tick = 10000, tvu_maxslew = 495 Jan 30 18:57:27 <ntp.notice> myhost xntpd[75127]: using xntpd phase-lock loop Any idea, what might be the reason for such strange resets ? Is there any reason for worries ? 2. Can somebody give any pointers and/or sample xntpd configuration files which would provide reasonable security of the xntpd server , while allowing any host on the local network to connect to it ? Thanks, Igor To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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