Thank you Charles for the expert advice on upd. 

I did a little more snooping and turns out #netdate
command (linux box) is port 37 while ntp is port 123. 
(I realize I'm beginning to sound like a total moron
and should have done the homework and rtfmed).

I downloaded a program called automachron for the M$
box (which looks pretty good for free) that
specifically calls out which port it plans to connect
to, 37 or 123.  I asked it to hit the firewall
192.168.1.254 and received "Error: 192.168.1.254 (123)
- Socket Error: Valid name, no data record of
requested type".  Asking it to look at a 'real' server
under the various protocols (v1,v2,v3,v4) produced the
desired result of providing information to update the
time.

The LEAF "Time in Bearing" 14.5 Subsection indicates
that the combination of libm.lrp and ntpsimpl.lrp can
be used to create a time server.  The paper then
explicitly says to open the firewall with:
ACCEPT  loc  fw  upd  ntp (to query the Bering time
server for local net).

I did NOT attempt to improve the standard firewall
rules so your comment below saying the internal
network should be able to access the firewall should
still be valid.

Maybe a little more snooping in the ntpsimpl.lrp
documentation is the next step.

Thank you for your valued comments and opinions.

R - Bill   


--- Charles Steinkuehler <[EMAIL PROTECTED]>
wrote:
> Don't knock yourself out about the missing listen. 
> UDP is a stateless 
> protocol, so *NO* UDP entries in the netstat output
> will have anything 
> in the "state" column.  "States" only make sense for
> TCP.
> 
> It looks like your server is listening to the
> internal interface, and 
> there are no firewall rules blocking any access from
> internal networks 
> to the firewall itself, so unless you did something
> really wacky to the 
> ipchains rules, that's not your problem either.
> 
> I'd make sure your windows client is actually
> talking NTP, rather than 
> one of the other (typically simpler) time protocols.
> 
> -- 
> Charles Steinkuehler


__________________________________________________
Do you Yahoo!?
Yahoo! Web Hosting - establish your business online
http://webhosting.yahoo.com


-------------------------------------------------------
This SF.net email is sponsored by:Crypto Challenge is now open! 
Get cracking and register here for some mind boggling fun and 
the chance of winning an Apple iPod:
http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en
------------------------------------------------------------------------
leaf-user mailing list: [EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/leaf-user
SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html

Reply via email to