Centroid.EU Blog
(this blog is mostly encrypted - adults only)
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New Job, my first week
April 28th, 2012
I have switched jobs and I want to tell about it so far. I think it's an
awesome job because it's 100% remote. But like any office setup I have a
voice over IP (VOIP) phone where I stay in contact with the staff and it's
routed entirely over the Internet. The phone I had from before because I
had contracted (technically I'm still a contractor) from this company in the
past and back then we got the SIP Phone for me. The pay is sufficient for
me to move out of my 1 bedroom apartment and I'm eyeing January or February
of 2013 for the move. I'm hoping to get an apartment where I can dedicate
1 room to the office so that I can close the door at the end of the day.
My hours are spread more over the day since work is also in north america
and I'M in europe. So I have the benefit of being able to conduct maintenance
on the computer systems while everyone sleeps and I'm also available during
the morning hours to the company. Our systems were designed for remote
consoles since that was the idea of the system architect, and it suits me
100%. I'm glad I got this job since I'd likely be unemployed again if I didn't
have it. well that's all so far, but I also want to say that I'm 100% impressed.
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Jupiter needed an operation
April 19th, 2012
Today I looked how hot Jupiter was and with horror I noticed the CPU was
at 81 degrees Celsius. A few more Centigrade and it would have turned itself
off from overheating. So I decided to clean the heatsink from dust again.
See here
. To my horror and after reseating the heatsink 4 times it didn't have
any cooling effect. So I had to go out and buy a new heatsink/cpu cooler.
I bought a Cooltek Coolforce 2.
I had to unmount the motherboard from its back-panel today to
install the new CPU heatsink/fan.
Before
After
To my suprise the CPU is now 25 degrees cooler and the CPU fan is not as fast
and loud. Very cool!
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26 Years of Personal Computing History
April 18th, 2012
In a previous
article I listed all the computers I had, by now 2.5 years later 3 more have
been added.
Uranus,
Jupiter, and Saturn. I'm going to give a rough outline of them.
year , computer type , Mhz ,acc. Mhz , RAM ,accumulated RAM
------------------------------------------------------------------------------
1986 , Sinclair ZX-81 , 1 Mhz, 1 Mhz, 4 KB, 4 KB
1988 , Commodore C-64 , 2 Mhz, 3 Mhz, 64 KB, 68 KB
1992 , IBM-PC 386-SX25 , 25 Mhz, 28 Mhz, 4096 KB, 4164 KB
1994 , IBM-PC 486-66DX2 , 66 Mhz, 94 Mhz, 8192 KB, 12356 KB
1996 , Intel Pentium 120 , 120 Mhz, 214 Mhz, 32767 KB, 45123 KB
1999 , Intel P-II-350 , 350 Mhz, 564 Mhz, 131072 KB, 176195 KB
1999 , Intel P-II-350 , 350 Mhz, 914 Mhz, 131072 KB, 307267 KB
2000 , AMD Athlon 1000 , 992 Mhz, 1906 Mhz, 262144 KB, 569411 KB
2001 , Apple G3 iBook , 500 Mhz, 2406 Mhz, 131072 KB, 700483 KB
2001 , Apple G4 Cube , 450 Mhz, 2856 Mhz, 131072 KB, 831555 KB
2003 , Intel Pentium 200 , 200 Mhz, 3056 Mhz, 65535 KB, 897090 KB
2005 , AMD Athlon64 3500+ , 2200 Mhz, 5256 Mhz, 4194304 KB, 5091394 KB
2010 , Intel Core i7 4core , 9600 Mhz,14000 Mhz, 8192000 KB, 13000000 KB
2011 , Intel Atom N270 , 1600 Mhz,15600 Mhz, 1024000 KB, 14000000 KB
2012 , AMD C-60 "Ontario" , 1000 Mhz,16600 Mhz, 4096000 KB, 18000000 KB
------------------------------------------------------------------------------
Hard to believe that 18 GB of RAM have been accumulated in all my computers.
In 2005 it was just 5 GB. Yup I'm spoiled and I'm worried about overspending.
One positive factor however is that the Atom and C-60 don't use up very much
electricity so I can keep them on overnight, and since Saturn (the C-60) is
running windows it goes into sleep mode after I close the lid of the netboook.
I haven't checked but I would assume the energy draw is little then.
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Added a robots.txt file
April 8th, 2012
I want to see how much my traffic drops with this, this is what I got..
%more robots.txt
User-agent: *
Disallow: /blog/
in the future people can still reach my /private and /public folders through
google.
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Exclusive view of my workbench
March 31st, 2012
I know it's a little dusty...here is my home workbench.

Below is the lanner that I bought last year January other than a little
dust it looks marvelous to me.
all ports used up so far.
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Interesting findings about older Airport Express Access Points
March 30th, 2012
My parents use an Apple Express AP for a print-server on their NAT'ed
network at Deutsche Telekom. I configured this access point to have the
domain name as "centroid.eu" and I noticed in my DNS logs that occasionally
the access point would "search" for the time server called
"time.euro.apple.com.centroid.eu" , here is a log:
Jan 8 15:00:49 uranus wildcarddnsd[14573]: request on descriptor 85 interface
"gif0" from 2003:180:2:7000:53:1:6:1 (ttl=0, region=255) for
"time.euro.apple.com.centroid.eu." type=AAAA(28) class=1, answering "NXDOMAIN"
So today I wanted to play. I wanted to find out if I can reveal the IPv4-only
network of my parents. So I mapped the AAAA RR of
time.euro.apple.com.centroid.eu to ::ffff:1.2.3.4 where 1.2.3.4 is really the
address of uranus.centroid.eu my home server. Here is how it looks like:
;; QUESTION SECTION:
;time.euro.apple.com.centroid.eu. IN AAAA
;; ANSWER SECTION:
time.euro.apple.com.centroid.eu. 86400 IN AAAA ::ffff:212.114.251.91
My hope was that the AP would try to connect to the NTP port of uranus and
thus be logged by my firewall. And guess what?
tcpdump: WARNING: snaplen raised from 116 to 160
13:10:49.833022 84.170.XXX.XXX.1052 > 212.114.251.91.123: v1 client strat 0 poll
+0 prec 0 dist 0.000000 disp 0.000000 ref (unspec)@0.000000000 orig 0.000000000
+[|ntp] (ttl 56, id 118, len 76)
And it reveals the IP of the NAT gateway of my parents. (I XXX'ed stuff out
to protect the innocent). Now I wonder what I can do with this or how this
can be maliciously used. Obviously putting the domain name cia.gov into an
apple access point is NOT a good idea if you want your privacy, not even as
a joke, because I've proven now that they'll find out who you are.
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Who watches the watchers?
March 28th, 2012
I did a whois of my brothers domain:
dione$ whois skpegasus.ca|more
Domain name: skpegasus.ca
Domain status: registered
Creation date: 2011/10/23
Expiry date: 2013/10/23
Updated date: 2011/10/25
Registrar:
Name: DomainsAtCost Corp.
Number: 45
Name servers:
uranus.centroid.eu
cirabug.goldflipper.net
% WHOIS look-up made at 2012-03-28 10:06:26 (GMT)
%
% Use of CIRA's WHOIS service is governed by the Terms of Use in its Legal
% Notice, available at http://www.cira.ca/legal-notice/?lang=en
%
% (c) 2010 Canadian Internet Registration Authority, (http://www.cira.ca/)
I was shocked to see a lookup stemming from a CIRA contractor of this domain
in my DNS logs. Apparently I must have tripped a wire with the innocent
WHOIS lookup. Here is the log. Notice the lookup from viagenie came 2 hours
after my initial WHOIS, so they do follow up on domains that are logged.
Mar 28 14:42:05 uranus wildcarddnsd[23167]: request on descriptor 21 interface
"em0" from 206.123.31.9 (ttl=49, region=255) for "www.skpegasus.ca." type=A(1)
class=1, answering "www.skpegasus.ca."
I'm thinking of expiring the .ca domain as my brother is too internet illiterate
to make use of it. It's basically just sitting there taking in mails from
spammers.
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