Yeah, grounding both ends will result in some current traversing across
the pairs all the time because of differences in ground potential over
long-ish distances.
Ken Matlock
Network Analyst
303-467-4671
matlo...@exempla.org
-Original Message-
From: valdis.kletni...@vt.edu
-Original Message-
From: valdis.kletni...@vt.edu [mailto:valdis.kletni...@vt.edu]
No, it will be strictly a DC current, with the amperage easily
calculated from the voltage difference between the two ends and the
resistance of
however many cable-feet of wire is involved. Not usually
There are plenty of 'knobs', but I doubt any read this list
Ken Matlock
Network Engineer
303-467-4671
matlo...@exempla.org
-Original Message-
From: Dobbins, Roland [mailto:rdobb...@arbor.net]
Sent: Monday, June 11, 2012 10:32 AM
To: NANOG Gripes List
Subject: Re: Whither Cometh
Netflow + netflow collector.
Ken Matlock
Network Analyst
Systems and Technology Service Center
Sisters of Charity of Leavenworth Health System
12600 W. Colfax, Suite A-500
Lakewood, CO 80215
303-467-4671
matlo...@exempla.org
-Original Message-
From: Maverick
You mean besides SSL? :)
Ken Matlock
Network Analyst
Systems and Technology Service Center
Sisters of Charity of Leavenworth Health System
12600 W. Colfax, Suite A-500
Lakewood, CO 80215
303-467-4671
matlo...@exempla.org
-Original Message-
From: Eduardo A. Suárez
Except in this case it's a DNS attack, which implies UDP based and easily
spoofed. The source IP may or may not actually be accurate.
Ken
From: Richard Barnes [mailto:richard.bar...@gmail.com]
Sent: Wed 11/30/2011 11:51 AM
To: andrew.wallace
Cc:
The second thing is that you need to have at least a VAGUE idea what you
want to actually offer.
A DSL ISP is VASTLY different than a Co-Location ISP.
I'd say you need to sit down and take a long hard look at exactly you
want to do, *then* figure out what you need to do in order to accomplish
I'm not sure what all I'd do with it (besides have the hostname
'Jenny'), but I'd love to have 86.75.30.9
Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlo...@exempla.org
-Original Message-
From: Robert Lusby [mailto:nano...@gmail.com]
Sent: Friday, February 18,
Probably related to:
http://www.engadget.com/2011/01/20/faa-warns-of-ongoing-gps-issues-in-so
utheastern-us-due-to-defens/
Sounds like they're doing 'tests' on GPS near SE Georgia.
Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlo...@exempla.org
-Original Message-
'Octal' (Base-8) :)
The leading '0' is telling the box to interpret it as octal instead of
decimal or hex.
Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlo...@exempla.org
-Original Message-
From: Greg Whynott [mailto:greg.whyn...@oicr.on.ca]
Sent: Monday, November
Because 'cloud computing' is the latest buzzword, and their marketing
department thought that by attaching that buzzword to it, that would
increase sales? :)
Nevermind that clouds contain nothing but vapor.
Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlo...@exempla.org
Active directly is tied fairly closely to it's DNS.
For example, if a client needs to find a Domain Controller, it does a
DNS 'SRV' query for (I think, I'm doing this from memory)
'_LDAP._TCP.domain.com/org/net/whatever'. I assume other 'services' like
LDAP are 'advertised' (if you can call it
As well as the don't sue me because I want to stop using them license?
Ask Autozone about that one :)
Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlo...@exempla.org
-Original Message-
From: John Peach [mailto:john-na...@johnpeach.com]
Sent: Thursday, May 27, 2010
My first guess would be the lightning was close enough/powerful enough,
to send out an EM Pulse which got picked up by the copper going to the
devices. This EM Pulse may have been interpreted at the switchport as
the device relinquishing power?
Had you tried just unplugging one of the devices
We also got email notifications about 'emergency maintenance' on our
Qwest circuits, from their notice:
Reason For Maintenance: EMERGENCY MAINTENANCE TO IMPLEMENT A SOFTWARE
PATCH FOR NETWORK RELIABILITY
Sure sounds like it's all related to the Juniper advisory to
The biggest problem with duplex had to do with 100mb.
Cisco (and a lot of other companies) decided in their infinite wisdom
that at 100mb if auto-negotiation fails, to use half duplex as the
default. So if you have both sides at auto, or both sides hard-set it's
all good. But if one side is
If it were me and had the requirement of having both NICs in the same L2
segment, but unique IP addresses, I'd assign a secondary IP address to
the Layer3 SVI on the upstream device, and give the 2nd NIC on the
server an IP on that secondary IP block.
Ken Matlock
Network Analyst
Exempla
I've even seen at a previous place (note: 'previous') that decided to
use 40.x.x.x for their internal IP space
I find it hard to believe a company can mismanage their IP space that
10.0.0.0, 192.168.0.0, and 172.(16-31).0.0 are all used up, but then
again, I shouldn't be surprised.
Back in
The system would literally, like an anti-aircraft weapon, shoot down
an attack before it hits its target, he said. And that's what we call
Einstein 3.0.
Correct me if I'm wrong, but doesn't even a basic firewall or ACL
provide the same functionality? Drop the packet, drop the attack? I'm in
the
Easiest way.
Take the integer, plug it into windows 'calc'.
Go to 'View: Scientific'.
Hit 'Hex'. That will show you the hex representation of the integer. Notice
that it's either 7 or 8 characters long.
If it's 7, prepend it with a 0.
Break that into 4 groups of 2. Those are the hex
Sorry for the off-topic post.
Does anyone here have real-world experience with Force 10 gear
(Specifically their E-Series and C-Series)? They came and did their
whole dog and pony show today, but I wanted to get real-world feedback
on their gear.
I need to know about their
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