[ntp:hackers] Re: IPv4 multicasting -m command line option
David L. Mills
mills at udel.edu
Tue Dec 14 21:33:27 PST 2004
I have no idea what what the -m option is for. I did not install that
option and do not know what the expections are. As you can see, the ntpd
configurations are easily exploited. I would like that to stop.
Danny Mayer wrote:
> I got this from a user and sure enough on the ntpd.html page
> the -m option is mentioned. In the code it really sets this up. I think
> that this is a very bad idea at the command line level. I think it
> should only go into the config file or were you thinking of some
> situation where you couldn't have a config file. In that case the
> address should be an argument to the option and could allow for
> both IPv4 AND IPv6 addresses and you could then have multiples.
>> 0) I just saw this in the man page - do I need this flag, or a different
>> kernel? I'm not using the flag - relying on the ntp.conf file.
>> -m Synchronize using NTP multicast messages on the IP multicast
>> group address 220.127.116.11 (requires multicast kernel).
More information about the hackers