[ntp:questions] NPTdate - difference in packets between -q and not?
Richard B. Gilbert
rgilbert88 at comcast.net
Sat Apr 4 17:14:16 UTC 2009
David J Taylor wrote:
> Richard B. Gilbert wrote:
>> Routers sold into the consumer market generally have configuration
>> options to allow or block ports and some can be configured to block
>> specific IP addresses or address families. By default they allow
>> responses to outgoing packets and block all other incoming traffic.
> Thanks, Richard. I've not met domestic routers which require specific
> configuration for NTP packets, but perhaps I've just been lucky. Would
> what you describe explain why ntpdate -q <remote> works, but nptdate
> <remote> responds with "no server suitable for synchronization found"?
> [By works, I mean he gets a response like:
> server 126.96.36.199, stratum 2, offset 12.016615, delay 0.05682
> 4 Apr 08:49:58 ntpdate: step time server 188.8.131.52 offset
> 12.016615 sec]
NTP passes through my router with no problems. I never had to do any
configuration to allow it. It seems to fall under "replies to outgoing
packets are allowed"! The router is is a LinkSys BEFR81. YMMV!
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