Firstly this is not a Microsoft product so it does not suffer from a
poorly coded argument parser; you can type "ntpdc -nc monlist", no need
to separate arguments. Just for the record using 'n' will not reverse
resolve IP addresses of client hosts.
The ports displayed via monlist are not open on your side. They are the
source ports used by the clients connecting to your server on port 123.
NTP has a listening port of 123 therefore all client destination ports
are 123 but all client source ports do not have to be 123 ( Windows
clients often use ports between 1024-65535, Unix systems running SNTP or
ntpdate with the 'u' argument use ports between 1024-65535, NTP daemon
uses port 123 ).
-----Original Message-----
From: timekeepers-bounces@???
[mailto:timekeepers-bounces@???] On Behalf Of Guillermo
Ballester Valor
Sent: September 13, 2003 1:37 PM
To: Klaus Alexander Seistrup; timekeepers@???
Subject: Re: [time] Re: Server use monitoring
On Saturday 13 September 2003 19:03, Klaus Alexander Seistrup wrote:
> Guillermo Ballester Valor wrote:
> > I would like to know how often is my server used by clients,
> > How can I do it?.
>
> Try "ntpdc -c monlist" or "ntpdc -n -c monlist".
>
I did it. It seems it is what I was looking for. Thanks!.
On the output I saw I have a lot of udp ports opened.
Some clients contact on other than 123 port. Is it a
security issue?. Must I be concerned?
> > filegen peerstats file peerstats type day enable
> > filegen loopstats file loopstats type day enable
> > filegen sysstats file sysstats type day enable
>
> My ntp.conf has "clockstats" where yours have "sysstats".
>
I changed it to clockstats, as it were before my modifications.
Guillermo
--
Guillermo Ballester Valor
registered linux user #117181
gbv@???
Ogijares, Granada SPAIN
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