[time-nuts] HP E2050A LAN/HPIB Gateway

Bill Hawkins bill at iaxs.net
Wed Sep 2 02:42:07 UTC 2009


192.168.x.x is reserved, and will not propagate on the Internet.
Same with 10.x.x.x.

These addresses are used on the local network side of Internet routers
that have Network Address Translation, so that malicious creeps with
warped brains can't find them. Doesn't work if someone on the local side
makes a query to a malicious address.

RFC 3330 seems to say that the 24 bit block 192.0.0.x is no longer reserved.

I still like HP.

Bill Hawkins

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Mike S
Sent: Tuesday, September 01, 2009 7:06 PM
To: Discussion of precise time and frequency measurement
Cc: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP E2050A LAN/HPIB Gateway

At 06:43 PM 9/1/2009, Adrian wrote...
>Finally, I found the E2050A default IP address somewhere 
>on the web.

If that's true, my respect for HP just dropped a couple of orders of 
magnitude. That's an IANA reserved address, and should not be used 
anywhere, especially as a default on a device which is sold to the 

See RFCs 3330 and 1918. 

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