Am Mo, den 29.08.2005 schrieb Albert A. Modderkolk um 17:54: > I would like to make a cron ntpdate job but I know that I have to open a > certain port. Which is it and how do I do that? > > Tia, Albert First part of your question: to learn fishing yourself :) grep ntp /etc/services That will show you the port that service (NTP) will use. Second question part: the default firewalling setup Fedora ships with allows running ntpdate without need for modification of this firewalling. Simply use "ntpdate -u" to use an unprivileged high port for outgoing communication of ntpdate with the target time server, which will be contacted at port 123 (asynchronous communication, like if you surf to a website with your browser, the port used on your side is a random high port, though the target webserver port is commonly port 80). http://www.eecis.udel.edu/~mills/ntp/html/ntpdate.html Alexander -- Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773 legal statement: http://www.uni-x.org/legal.html Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.35_FC2smp Serendipity 18:00:35 up 7 days, 14:44, load average: 0.17, 0.15, 0.12
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