Internet time sync fails

M

MiB

the system log tells me "destination not accessible"
1) I can ping time.nist.gov fine!
2) firewall allows port 123 TCP/UDP
3) windows time service is on automatic.

what do I miss?

Steve
 
C

CreateWindow

Hi MiB,

That's weird. Is DNS working - it is when you ping of course. All I can
think of is a bug in the F/wall. You need to look closer: What does a packet
trace show? (Netmon 3.0 will show you - its a free download from MS).

CreateWindow
http://justpageprobe.com
The FREE Web page utility you always wanted.
Monitor your enterprise Web Servers.
Keep your router connected.
Email your IP to where you need it.
 
B

Brian A.

MiB said:
...

it does not work with any other time server even when I can ping it properly!
Click to expand...


Did you try time-a.nist.gov? It has never failed on any of my machines, I just ran
it on 2 machines to test if it would work and it did without a hitch, whereas
time.nist.gov never worked.


--

Brian A. Sesko { MS MVP_Shell/User }
Conflicts start where information lacks.
http://basconotw.mvps.org/

Suggested posting do's/don'ts: http://www.dts-l.org/goodpost.htm
How to ask a question: http://support.microsoft.com/kb/555375
 
M

MiB

Brian A. said:
Did you try time-a.nist.gov? It has never failed on any of my
machines, I just ran it on 2 machines to test if it would work and it
did without a hitch, whereas time.nist.gov never worked.
Click to expand...

yes, I tried time-a.nist.gov .. it fails to sync!
 
M

MiB

CreateWindow said:
Dear MiB

Did the packet trace show anything?

CreateWindow
Click to expand...

Hello,
I posted the trace to you already but here again:

6 0.265625 192.43.244.18 192.168.1.193 NTP NTP: NTPv3 Response, Leap = 0, Mode = 2

7 66.562500 207.46.248.16 192.168.1.193 NNTP NNTP: Response, 503 - program fault (command not performed), 27 bytes

8 66.562500 207.46.248.16 192.168.1.193 TCP TCP: Flags=F...A..., SrcPort=NNTP(119), DstPort=3504, Len=0, Seq=1714368059, Ack=3497215665, Win=65457 (scale factor 0) = 0
9 66.562500 192.168.1.193 207.46.248.16 TCP TCP: Flags=....A..., SrcPort=3504, DstPort=NNTP(119), Len=0, Seq=3497215665, Ack=1714368060, Win=33008 (scale factor 0) = 0
10 66.625000 192.168.1.193 207.46.248.16 TCP TCP: Flags=F...A..., SrcPort=3504, DstPort=NNTP(119), Len=0, Seq=3497215665, Ack=1714368060, Win=33008 (scale factor 0) = 0
 
C

CreateWindow

Hi MiB,

The idea is to close all programs including your news client (NNTP) - port
119 - which is just "noise".

Run a capture whilst clicking on "Update now" and you should get a few
packets targeting port 53 (DNS) then 123 NTP.
Plus if you have a regular NAT hardware firewall then you don't need to open
an outbound ports anyway.

Uh Oh....!! I can't get anything to work except ntp1.anu.edu.au -
works fantastic.
Why has time.nist.gov/time-b... etc etc. stopped working??? Even
time.windows.com no workuth? Duh?

Hmmmm???? I'm giving up. I'll stick to ntp1.anu.edu.au Maybe this
geographic / ISP blocking.

Maybe try a time server in your area.

CreateWindow
 
M

MiB

CreateWindow said:
Hi MiB,

The idea is to close all programs including your news client (NNTP) -
port 119 - which is just "noise".

Run a capture whilst clicking on "Update now" and you should get a few
packets targeting port 53 (DNS) then 123 NTP.
Click to expand...

yes, I have that in frame-details and something telling no stratum specified.
 
M

MiB

...
This query seems to come up about every three days.
Click to expand...

True! the Internet is full of "help - XP time sync problems" and Vesley Vogels advice is not working for me as it fails for many others as well. Time sync obviously is the most unreliable function in XP for way too many people out there.

Steve
 
F

Frank\(FL\)

MiB said:
...

True! the Internet is full of "help - XP time sync problems" and
Vesley Vogels advice is not working for me as it fails for many
others as well. Time sync obviously is the most unreliable function
in XP for way too many people out there.

Steve
Click to expand...

I followed the directions about three weeks ago and have not
had a problem since.
I
have///time.windows.com///time.nist.gov///north-america.pool.ntp.org///
Default to north-america.pool.ntp.org
 

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