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Re: ntp configuration



On Wed, 2004-06-30 at 12:04, Alvin Oga wrote:
> > broadcast               192.168.0.0
> 
> i assume your laptop ( the other ntp config ) is in this ip# range

The laptop happily loads web pages from the server, and I do all my
testing by sshing to it.

As per an earlier email:
---
zen8100a:~# nmap -sU -p 122-124 -vv whiskas

Starting nmap 3.50 ( http://www.insecure.org/nmap/ ) at 2004-06-25 17:03
EST
Host whiskas (192.168.0.4) appears to be up ... good.
Initiating UDP Scan against whiskas (192.168.0.4) at 17:03
The UDP Scan took 2 seconds to scan 3 ports.
Adding open port 123/udp
Interesting ports on whiskas (192.168.0.4):
PORT    STATE  SERVICE
122/udp closed smakynet
123/udp open   ntp
124/udp closed ansatrader

Nmap run completed -- 1 IP address (1 host up) scanned in 2.350 seconds
---

so the ntp port is accessible/ open, according to nmap. And:
___ 04-06-30 12:20:47 zen@zen8100a:~
$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:04:76:4E:40:45
          inet addr:192.168.0.211  Bcast:192.168.0.255 
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:126868 errors:0 dropped:0 overruns:0 frame:0
          TX packets:108180 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:53098650 (50.6 MiB)  TX bytes:8568141 (8.1 MiB)
          Interrupt:10 Base address:0xe800
...

> and besides, you need to make sure all your masks etc
> are properly configured, including the firewall that
> should allow ntp traffic
> 	- your laptop only needs to point to whiskas

Well, step one is getting the server running, and it doesn't seem to be.
I'll run that test I assume is the one again... :

whiskas:~# ntpq -cpe
     remote           refid      st t when poll reach   delay   offset 
jitter
==============================================================================
 gen21.ihug.com. .RSTR.          16 u    -   64    0    0.000    0.000
4000.00
*LOCAL(0)        LOCAL(0)        10 l  262  512  377    0.000    0.000  
0.001
 192.168.0.0     .BCST.          16 u    -   64    0    0.000    0.000
4000.00


Note that tk1.ihug.. resolves the same as gen21.ihug.com.au - they're
the same ip address. Given that you've said previously that delay and
offsets of zero is bad, the server actually isn't running yet. Is this a
correct assesment (to be honest, I'm still not sure)?

> -------
> 
> do the same "ntpdate whiskas" from your laptop and you're done
> if you get a non-zero offset

I'm guessing I shouldn't be getting that zero offset on the server
itself...

Thanks heaps
Zen



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