Date: Sat, 5 Sep 1998 23:00:41 -0500 (CDT) From: User Measl <measl@smaug.mfn.org> To: FreeBSD-Questions@FreeBSD.ORG Subject: ntpdate TCP or UDP Message-ID: <199809060400.XAA17991@smaug.mfn.org>
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Greetings. I noticed that sometimes ntpdate will get past our ipfw rules, and sometimes it won't. The rules are ok, but heres what happens. If I use: ntpdate -b ncar.ucar.edu It always works. If I type: ntpdate -b -d ncar.ucar.edu it *never* works. Typing ntpdate -b -d -t 5 ncar.ucar.edu will work *sometimes* 8=}} The firewall allows udp out for ntp, on port 123. TCP is blocked. I am assuming (yes, dangerous, which is why the question here) that the -b switch alone forces a UDP inquiry, whereas the -b -d switches force TCP. Am I nuts? Or is this accurate? If this is right, what is the reasoning behind it? Yours, John Blau jb214@mfn.org P.S. I'm not on the list, so please answer directly. Thanks. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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