[Gllug] ntpdate "no server suitable for synchronization found"
Richard Jones
rich at annexia.org
Tue Mar 14 20:06:27 UTC 2006
I think this is a firewall problem. Basically I've got a bog-standard
Belkin ADSL firewall and I can't for the life of me work out how to
make NTP work properly through it.
# ntpdate 0.uk.pool.ntp.org
14 Mar 20:02:17 ntpdate[32391]: no server suitable for synchronization found
But, there's plenty of NTP activity happening while this command
executes, both outgoing & incoming (see below).
What's going on?!? How can I debug this further?
Rich.
# tcpdump -i wlan0 udp port 123
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), capture size 96 bytes
20:02:11.581081 IP test.merjis.com.ntp > skylar.fbagroup.co.uk.ntp: NTPv4, Client, length 48
20:02:11.637905 IP skylar.fbagroup.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:11.783042 IP test.merjis.com.ntp > macdonald100.force9.co.uk.ntp: NTPv4, Client, length 48
20:02:11.892861 IP macdonald100.force9.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:11.985009 IP test.merjis.com.ntp > spork.qfe3.net.ntp: NTPv4, Client, length 48
20:02:12.036837 IP spork.qfe3.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.186981 IP test.merjis.com.ntp > ntp.ntohs.co.uk.ntp: NTPv4, Client, length 48
20:02:12.279795 IP ntp.ntohs.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.388956 IP test.merjis.com.ntp > harzer.cheeseonhost.com.ntp: NTPv4, Client, length 48
20:02:12.445768 IP harzer.cheeseonhost.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.590919 IP test.merjis.com.ntp > skylar.fbagroup.co.uk.ntp: NTPv4, Client, length 48
20:02:12.591741 IP test.merjis.com.ntp > host-87-75-128-50.bulldogdsl.com.ntp: NTPv4, Client, length 48
20:02:12.661731 IP skylar.fbagroup.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.731727 IP host-87-75-128-50.bulldogdsl.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.792884 IP test.merjis.com.ntp > macdonald100.force9.co.uk.ntp: NTPv4, Client, length 48
20:02:12.793708 IP test.merjis.com.ntp > cheddar.halon.org.uk.ntp: NTPv4, Client, length 48
20:02:12.866699 IP cheddar.halon.org.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.933687 IP macdonald100.force9.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:12.994855 IP test.merjis.com.ntp > spork.qfe3.net.ntp: NTPv4, Client, length 48
20:02:12.995675 IP test.merjis.com.ntp > 103.openia.net.ntp: NTPv4, Client, length 48
20:02:13.050666 IP spork.qfe3.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.071663 IP 103.openia.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.196832 IP test.merjis.com.ntp > ntp.ntohs.co.uk.ntp: NTPv4, Client, length 48
20:02:13.197644 IP test.merjis.com.ntp > herm.doylem.co.uk.ntp: NTPv4, Client, length 48
20:02:13.273628 IP herm.doylem.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.288626 IP ntp.ntohs.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.398798 IP test.merjis.com.ntp > harzer.cheeseonhost.com.ntp: NTPv4, Client, length 48
20:02:13.399608 IP test.merjis.com.ntp > 213.205.157.156.ntp: NTPv4, Client, length 48
20:02:13.444601 IP harzer.cheeseonhost.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.498592 IP 213.205.157.156.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.600767 IP test.merjis.com.ntp > skylar.fbagroup.co.uk.ntp: NTPv4, Client, length 48
20:02:13.601573 IP test.merjis.com.ntp > host-87-75-128-50.bulldogdsl.com.ntp: NTPv4, Client, length 48
20:02:13.650567 IP skylar.fbagroup.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.671562 IP host-87-75-128-50.bulldogdsl.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.802733 IP test.merjis.com.ntp > macdonald100.force9.co.uk.ntp: NTPv4, Client, length 48
20:02:13.803540 IP test.merjis.com.ntp > cheddar.halon.org.uk.ntp: NTPv4, Client, length 48
20:02:13.863531 IP cheddar.halon.org.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:13.927623 IP macdonald100.force9.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.004703 IP test.merjis.com.ntp > spork.qfe3.net.ntp: NTPv4, Client, length 48
20:02:14.005507 IP test.merjis.com.ntp > 103.openia.net.ntp: NTPv4, Client, length 48
20:02:14.058499 IP spork.qfe3.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.139485 IP 103.openia.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.206674 IP test.merjis.com.ntp > ntp.ntohs.co.uk.ntp: NTPv4, Client, length 48
20:02:14.207472 IP test.merjis.com.ntp > herm.doylem.co.uk.ntp: NTPv4, Client, length 48
20:02:14.268464 IP herm.doylem.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.295460 IP ntp.ntohs.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.408641 IP test.merjis.com.ntp > harzer.cheeseonhost.com.ntp: NTPv4, Client, length 48
20:02:14.409439 IP test.merjis.com.ntp > 213.205.157.156.ntp: NTPv4, Client, length 48
20:02:14.460431 IP harzer.cheeseonhost.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.491426 IP 213.205.157.156.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.610631 IP test.merjis.com.ntp > skylar.fbagroup.co.uk.ntp: NTPv4, Client, length 48
20:02:14.611407 IP test.merjis.com.ntp > host-87-75-128-50.bulldogdsl.com.ntp: NTPv4, Client, length 48
20:02:14.662398 IP skylar.fbagroup.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.690393 IP host-87-75-128-50.bulldogdsl.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.812579 IP test.merjis.com.ntp > macdonald100.force9.co.uk.ntp: NTPv4, Client, length 48
20:02:14.813371 IP test.merjis.com.ntp > cheddar.halon.org.uk.ntp: NTPv4, Client, length 48
20:02:14.863364 IP cheddar.halon.org.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:14.916361 IP macdonald100.force9.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.015343 IP test.merjis.com.ntp > spork.qfe3.net.ntp: NTPv4, Client, length 48
20:02:15.016351 IP test.merjis.com.ntp > 103.openia.net.ntp: NTPv4, Client, length 48
20:02:15.072330 IP spork.qfe3.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.101353 IP 103.openia.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.216522 IP test.merjis.com.ntp > ntp.ntohs.co.uk.ntp: NTPv4, Client, length 48
20:02:15.217449 IP test.merjis.com.ntp > herm.doylem.co.uk.ntp: NTPv4, Client, length 48
20:02:15.284294 IP herm.doylem.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.314290 IP ntp.ntohs.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.418496 IP test.merjis.com.ntp > harzer.cheeseonhost.com.ntp: NTPv4, Client, length 48
20:02:15.419272 IP test.merjis.com.ntp > 213.205.157.156.ntp: NTPv4, Client, length 48
20:02:15.467269 IP harzer.cheeseonhost.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.497259 IP 213.205.157.156.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.620464 IP test.merjis.com.ntp > host-87-75-128-50.bulldogdsl.com.ntp: NTPv4, Client, length 48
20:02:15.698225 IP host-87-75-128-50.bulldogdsl.com.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:15.822429 IP test.merjis.com.ntp > cheddar.halon.org.uk.ntp: NTPv4, Client, length 48
20:02:15.881196 IP cheddar.halon.org.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:16.024398 IP test.merjis.com.ntp > 103.openia.net.ntp: NTPv4, Client, length 48
20:02:16.085161 IP 103.openia.net.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:16.226370 IP test.merjis.com.ntp > herm.doylem.co.uk.ntp: NTPv4, Client, length 48
20:02:16.284127 IP herm.doylem.co.uk.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
20:02:16.428338 IP test.merjis.com.ntp > 213.205.157.156.ntp: NTPv4, Client, length 48
20:02:16.488094 IP 213.205.157.156.ntp > test.merjis.com.ntp: NTPv4, Server, length 48
80 packets captured
80 packets received by filter
0 packets dropped by kernel
--
Richard Jones, CTO Merjis Ltd.
Merjis - web marketing and technology - http://merjis.com
Team Notepad - intranets and extranets for business - http://team-notepad.com
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