Setting up a timeserver

[ogg]

Hi folks,

how can I set up my mac to be a timeserver for my local network?

[gatorparrots]

You're already running ntpd on your machine:
ps auxww | grep "ntp[d]"
root 334 0.0 0.0 1556 304 ?? Ss 10:47AM 0:05.10 ntpd -f /var/run/ntp.drift -p /var/run/ntpd.pid

[ogg]

Thanks. But when I set the IP-Number of my Mac OS X Server into the Timeserver-Field of my Client, I become an error.

Have I missunderstood anything else?

[gatorparrots]

You have to configure it:

# Create the configuration file for NTPD
   * Make the file /etc/ntp.conf
      BEGIN FILE
      server 127.127.1.0 prefer
      fudge 127.127.1.0 stratum 0
      END OF FILE 
    * "server" 127.127.1.0 specifies the local clock   
    * "refer" tells ntpd to prefer this other any other options
    * fudge "127.127.1.0 stratum 0" tells ntpd that this is a very reliable time source

Also, are you running the ipfw? If so, you will have to open the appropriate ports.

[pink]

In the standard configuration, ntpd only works as a client. To have it work as a server, you'll need to edit /etc/ntp.conf .
I couldn't find the man pages for ntpd and ntp.conf on my system, but they can be read here:
http://www.freebsd.org/cgi/man.cgi?q...SD+4.1-RELEASE

cheers, pink

edit: so I was a bit too late...

[ogg]

@ gatorparrots and pink

thanks a lot, but I can't get it work... can you give me a sample with real ip-numbers, machines and so on?

how can i start (or restart) the ntpd? should I confugure anything else?

what is the default port-number of timeserver?
how can I open the port?

Many questions, I know...

[gatorparrots]

ntp ports:

Quote: ntp 123/tcp #Network Time Protocol ntp 123/udp #Network Time Protocol

Adding firewall rules:
sudo ipfw add 2008 allow tcp from any to 192.168.1.2 123 in recv en0
sudo ipfw add 2008 allow tcp from 192.168.1.2 123 to any out xmit en0
sudo ipfw add 2009 allow udp from any to 192.168.1.2 123 in recv en0
sudo ipfw add 2009 allow udp from 192.168.1.2 123 to any out xmit en0
(The rule numbers [2008,2009] are arbitrary. Replace with numbers appropriate to your configuration. 192.168.1.2 is your IP address. Replace as appropriate.)

Restart the ntpd daemon like this:
sudo kill -1 `cat /var/run/ntpd.pid`

[ogg]

------------------------------------------------------
code:

# Create the configuration file for NTPD
* Make the file /etc/ntp.conf
BEGIN FILE
server 10.0.0.5 prefer
fudge 10.0.0.5 stratum 0
END OF FILE

------------------------------------------------------


>> when I modify this config-file and then I re-open the System Preferences > Time + Date, I get the following server: "10.0.0.5 fudge"


>> then I open the Config-File again and the files looks like this:
------------------------------------------------------
server 10.0.0.5 minpoll 12 maxpoll 17
fudge 10.0.0.5 minpoll 12 maxpoll 17
------------------------------------------------------


>> What does this mean? I only want to have a timeserver...

>> "10.0.0.5" is the ip-adress of my station, that I want to have as timeserver.