nanog mailing list archives

Re: Open Letter to D-Link about their NTP vandalism


From: "Alexei Roudnev" <alex () relcom net>
Date: Tue, 11 Apr 2006 09:28:14 -0700


It's legal to have broken NTP server in ANY country, and it's legal in most
(by number) countries to send counter-attack (except USA as usual, where
lawyers want to get their money and so do not allow people to self-defence).

So, it can be a GOOD prtactice in reality. But, of course, not in USA.
----- Original Message ----- 
From: "John Dupuy" <jdupuy-list () socket net>
To: <nanog () nanog org>
Sent: Tuesday, April 11, 2006 9:00 AM
Subject: Re: Open Letter to D-Link about their NTP vandalism



To keep this operational: Operationally the network operator should
contact a lawyer before doing something like this.

Purposely and knowingly sending bad data in order to do harm is a
counter-attack. As such it might be vigilantism, which is illegal in
most countries. Or it might be self-defense, which is not illegal.
Might. Contact a lawyer.

John

At 07:36 PM 4/10/2006, Simon Lyall wrote:

On Mon, 10 Apr 2006 Valdis.Kletnieks () vt edu wrote:
One particular piece of crapware of the tucows archive variety would
retry
once per second if it hadn't heard a response - but a ICMP Port
Unreachable
would trigger an *immediate* query, so it would basically
re-query at whatever
the RTT for the path was.

I've said in other forums the only solution for this sort of software is
to return the wrong time (by several months). The owner might actually
notice then and fix the problem.

Just not returning anything means the time still works on the querying
device (especially if it uses multiple servers) and the problem will not
be noticed and it will continue.

--
Simon J. Lyall  |  Very Busy  |  Web: http://www.darkmere.gen.nz/
"To stay awake all night adds a day to your life" - Stilgar | eMT.



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