On Feb 19, 2012, at 5:21 PM, Mark Andrews wrote:
>
> In message <201202200107.q1k17w5l000...@aurora.sol.net>, Joe Greco writes:
I have running code to make the reverse translations, with
which protocols such as ftp with PORT commands are working.
>>>
>>> No, I think you do not underst
On Sun, 19 Feb 2012 16:24:49 PST, Owen DeLong said:
> No, I think you do not understand...
>
> I have a NAT gateway with a single public address.
>
> I have 15 FTP servers and 22 web servers behind it.
>
> I want people to be able to go to ftp:// and/or =
> http:// for each of them.
>
> Please exp
Chris gmail.com> writes:
>
> Anyone noticing issues with Dynadot (site is down) and Dynadot related
> domain names where you are using their DNS servers?
>
Yep, I was using Dynadot DNS for one of my domains. It seems their DNS servers
weren't functioning properly. Anyway I switched to NameChe
On Mon, 20 Feb 2012 15:42:56 +0900, Masataka Ohta said:
> George Bonser wrote:
>
> >> It is seemingly working well means there is not much PMTU changes,
> >> which means we had better assumes some PMTU (1280B, for example) and
> >> use it without PMTUD.
>
> > It depends on the OS and the method bei
I received a number of interesting replies, most off-list, so I thought
I would summarize and perhaps restart the discussion.
Many folks pushed the "run your own CA" idea. While I get that works,
and even secures the communication, if you run a web site accessed by
random folks it will confuse s
On Sat, 18 Feb 2012, John Osmon wrote:
At my $JOB[-1] they laughed at me when I pulled a Wyse out of the
trash bin and stuck it on a spare crash cart.
Then I fixed something while they were still looking for USB-Serial,
etc.
Speaking of that sort of thing, I'd really LOVE if there were a devi
- Original Message -
> From: "Christopher Morrow"
> This sort of thing happens 'often' ('XXX is not available, wtf?')
>
> should there be some set of troubleshooting steps followed, like a
> list of thing you'd do in order to show you'd troubleshot the problem
> and it wasn't "your probl
I am a mere user, so I all this stuff sounds to me like giberish.
The right solution is to capture the request to these DNS servers, and
send to a custom server with a static message "warning.html". Nothing
fancy. With a phone number to "get out of jail", so people can call
to "op-out" of this
Take a look at Raritan. We use their product to gain remote access to system
consoles. No more driving 100s of miles. Ok, it would be 200 feet for us.
matthew black
information technology services bh-188
california state university, long beach
-Original Message-
From: Jon Lewis [mailto:
I too would be VERY interested in something like this. There are many times
when I am out on site with customers who don't have anything connected to it
and you need to figure out what is up. Even a VGA input USB keyboard/mouse and
application to match it for an Android/iFail tablet would be A
> George Bonser wrote:
>
> >> It is seemingly working well means there is not much PMTU changes,
> >> which means we had better assumes some PMTU (1280B, for example) and
> >> use it without PMTUD.
>
> > It depends on the OS and the method being used. If you set the
> option
> > to "2" on Linux,
On Mon, Feb 20, 2012 at 7:34 AM, Jon Lewis wrote:
> Speaking of that sort of thing, I'd really LOVE if there were a device about
> the size of a netbook that could be hooked up to otherwise headless machines
> in colos that would give you keyboard, video & mouse. i.e. a folding
> netbook shaped V
On Mon, 20 Feb 2012 16:38:00 +0100, Tei said:
> The right solution is to capture the request to these DNS servers, and
> send to a custom server with a static message "warning.html".
Not all DNS lookups are for websites. The lookup could be for NTP, or SMTP,
or ssh, or a World of Warcraft server
> Speaking of that sort of thing, I'd really LOVE if there were a device
> about the size of a netbook that could be hooked up to otherwise headless
> machines in colos that would give you keyboard, video & mouse. i.e. a
> folding netbook shaped VGA monitor with USB keyboard and touchpad. I kn
On Mon, Feb 20, 2012 at 10:34:58AM -0500, Jon Lewis wrote:
> Speaking of that sort of thing, I'd really LOVE if there were a
> device about the size of a netbook that could be hooked up to
> otherwise headless machines in colos that would give you keyboard,
> video & mouse. i.e. a folding netbook
On 2/20/12 08:54 , Matthew Petach wrote:
> On Mon, Feb 20, 2012 at 7:34 AM, Jon Lewis wrote:
>> Speaking of that sort of thing, I'd really LOVE if there were a device about
>> the size of a netbook that could be hooked up to otherwise headless machines
>> in colos that would give you keyboard, vid
In a message written on Mon, Feb 20, 2012 at 09:51:59AM -0800, Joel jaeggli
wrote:
> Things with legacy ports on them are on the way out. given an ipmi
> manager that doesn't suck there should be no reason to connect to the
> machine at all, to console in. the rats nest is a lot more tractable
> w
On Mon, Feb 20, 2012 at 12:00 PM, wrote:
> On Mon, 20 Feb 2012 16:38:00 +0100, Tei said:
>> The right solution is to capture the request to these DNS servers, and
>> send to a custom server with a static message "warning.html".
>
> Not all DNS lookups are for websites. The lookup could be for N
On Mon, Feb 20, 2012 at 10:38 AM, Tei wrote:
> I am a mere user, so I all this stuff sounds to me like giberish.
>
> The right solution is to capture the request to these DNS servers, and
> send to a custom server with a static message "warning.html". Nothing
> fancy. With a phone number to "ge
On 2/20/12 09:55 , Leo Bicknell wrote:
> In a message written on Mon, Feb 20, 2012 at 09:51:59AM -0800, Joel jaeggli
> wrote:
>> Things with legacy ports on them are on the way out. given an ipmi
>> manager that doesn't suck there should be no reason to connect to the
>> machine at all, to console
+1 on the suggestion for a SpiderDuo as portable KVM+your own laptop.
Solves the problem and leverages the hardware you already have. Works
great!
Anyway: Bluetooth-to-Serial has been around for years; I did a review of
several of them a while ago, even connecting with a Nokia phone (this
wa
On Mon, 20 Feb 2012, Joe Greco wrote:
I must admit that our planning and preparedness is designed around a
multi-level strategy to avoid having to go on-site to a site nearly a
thousand miles away, so we've probably instrumented things a bit more
heavily than many networks, but when the cost dif
On Friday, February 17, 2012 01:44:57 PM Jay Ashworth wrote:
> 2) Power cords: C19 to L6-15, C19 to C20, C13 to C20 (latter 2 for 208V PDUs)
> (If you don't have your own C13 to L6-15 cords, you're in the wrong biz)
An interesting thread.
I'd say if you had, instead of a C13 on one end, a
- Original Message -
> From: "Jon Lewis"
> Speaking of that sort of thing, I'd really LOVE if there were a device
> about the size of a netbook that could be hooked up to otherwise headless
> machines in colos that would give you keyboard, video & mouse. i.e. a
> folding netbook shaped VG
Here's one example; cheapest I've seen:
http://www.kvm-switches-online.com/0su51068.html
There are others. This one appears to be web/java based rather than VNC,
though that probably isn't a killer for most people.
I thought I'd seen a little dongle-y model; I'll look around a bit more.
Cheers
- Original Message -
> From: "Jay Ashworth"
> There are others. This one appears to be web/java based rather than VNC,
> though that probably isn't a killer for most people.
>
> I thought I'd seen a little dongle-y model; I'll look around a bit
> more.
Didn't read far enough; Jussi Pelt
On Mon, Feb 20, 2012 at 03:05:16PM -0500, Jay Ashworth wrote:
> Here's one example; cheapest I've seen:
>
> http://www.kvm-switches-online.com/0su51068.html
>
> There are others. This one appears to be web/java based rather than VNC,
> though that probably isn't a killer for most people.
>
> I
On 2/20/12 09:57 , Christopher Morrow wrote:
> On Mon, Feb 20, 2012 at 10:38 AM, Tei wrote:
>> I am a mere user, so I all this stuff sounds to me like giberish.
>>
>> The right solution is to capture the request to these DNS servers, and
>> send to a custom server with a static message "warning.h
On 2/20/12 12:05 PM, Jay Ashworth wrote:
> Here's one example; cheapest I've seen:
>
> http://www.kvm-switches-online.com/0su51068.html
>
> There are others. This one appears to be web/java based rather than VNC,
> though that probably isn't a killer for most people.
>
> I thought I'd seen a li
Ive wished this for years. Seems like it could be easy to achieve in theory.
-Mario Eirea
On Feb 20, 2012, at 11:55 AM, "Matthew Petach" wrote:
> On Mon, Feb 20, 2012 at 7:34 AM, Jon Lewis wrote:
>> Speaking of that sort of thing, I'd really LOVE if there were a device about
>> the size of a
It practically requires more hardware than a separate IP KVM. Finding
RS-232 in a laptop is already nearly impossible, so I doubt this will
happen.
The keyboard/mouse part *might* be possible in some cases where these
devices have a usb interface somewhere in the middle. Still, you'd need
cables t
- Original Message -
> From: "Leo Bicknell"
> This reminded me of another gizmo I'd like to have...
>
> How about a Bluetooth to Serial adapter? Routers don't (yet) have
> iLO, but I have this fantasy about being able to walk into a colo
> with a handfull of small adapters that I simply
Interesting thought.
You know you can easily put together something like such...
Some ideas for you:--
Screens: (these are mostly designed to be 2nd Screens on laptops).
http://www.amazon.com/s/?ie=UTF8&keywords=lt1421&tag=googhydr-20&index=aps&hvadid=13474581570&ref=pd_sl_8j9d6nstmk_b
<
On Mon, 20 Feb 2012, Faisal Imtiaz wrote:
Or if you can order one of these. Exactly what you are looking for !!!
http://store.earthlcd.com/LCD-Products/Portable-Monitors
That does look like pretty much exactly what I wanted...but a palm sized
IP KVM for less than half the price seems much
NANOG Community,
After an awesome meeting in San Diego, we're already starting to get ready for NANOG 55 in Vancouver.
If you have a topic you'd like to speak about, we'd love to consider it. Please watch
http://www.nanog.org/meetings/nanog55/callforpresentations.html for more informa
George Bonser wrote:
> Must be magic then, because it works for me.
Yes, but magicians always use tricks.
> I've got a few dozen servers with MTU 7500 that aren't
> having a bit of trouble talking to anyone.
Your trick is that your routers at the border between MTUs
7500 and 1500 (or maybe, 140
There are also these, work with anything with a USB port:
http://www.blackbox.com/Store/Detail.aspx/USB-Laptop-Console-Crash-Cart-Adap
ter/KVT100A
You could mate this with a cheap used Netbook too.
-Original Message-
From: Jon Lewis [mailto:jle...@lewis.org]
Sent: Monday, February 20, 2
>
> Your trick is that your routers at the border between MTUs
> 7500 and 1500 (or maybe, 1400 or so) generate ICMP packet too big
> packets to your servers and no intermediate entities filter them, isn't
> it?
>
> Masataka Ohta
I am saying that MTU
On Mon, 2012-02-20 at 23:23 +0200, Jussi Peltola wrote:
> The display would require a scaler/processor/ADC/TMDS receiver, which are
> found in every standalone LCD. This stuff consumes multiple watts (it
> becomes hot enough to cook itself in a few years after all) so it will
> not appear in a lap
George Bonser wrote:
> I am saying that MTU probing works just fine, even with a
> link in between that has a shorter MTU and doesn't pass
> ICMP.
And I have been saying your statement is unfounded.
> I actually have one of those.
I can't see any.
> It actively probes with packets of varying s
This is perfect! In my situation, I have to deal with many single server at
multiple locations instead of the opposite. This sure beats walking around with
an LCD panel and keyboard...
-Mario Eirea
From: Scott Berkman [sc...@sberkman.net]
Sent: Monday, Fe
> From nanog-bounces+bonomi=mail.r-bonomi@nanog.org Mon Feb 20 09:40:44
> 2012
> Date: Mon, 20 Feb 2012 10:34:58 -0500 (EST)
> From: Jon Lewis
> To: nanog@nanog.org
> Subject: Re: WW: Colo Vending Machine
>
> On Sat, 18 Feb 2012, John Osmon wrote:
>
> > At my $JOB[-1] they laughed at me when
>
>
>> The timer for Linux is 5 minute by default but you can change it.
>
> Timer timeouts do not affect TCP MSS.
>
RFC 2923:
TCP should notice that the connection is timing out. After
several timeouts, TCP should attempt to send smaller packets,
perhaps turning off the DF
On Sat, Feb 18, 2012 at 1:19 AM, Bob Vaughan wrote:
> "Ethernet/Token Ring/Cisco Console/whatever uses an RJ45 connector"
> RJ45 defines a keyed 8P8C type connector, wired in a specific
> manner, for a specific 2 wire telco service. Incompatible with the
> above on several levels. "RJxx" == sp
> -Original Message-
> From: Masataka Ohta
> First, it sets eff_pmtu to 1400B. OK?
Where did you get 1400 from? Are you talking specifically with the linux
implementation?
"As eff_pmtu of 1400B is close enough to search_high, you are done."
I suppose that depends on a specific impl
George Bonser wrote:
>> First, it sets eff_pmtu to 1400B. OK?
>
> Where did you get 1400 from?
Read the RFC. PERIOD.
Masataka Ohta
I, in fact, HAVE read the RFC.
The initial value for search_high SHOULD be the largest possible
packet that might be supported by the flow. This may be limited by
the local interface MTU, by an explicit protocol mechanism such as
the TCP MSS option, or by an intrinsic limit such as
Steven Bellovin wrote:
>> Timer timeouts do not affect TCP MSS.
> RFC 2923:
>TCP should notice that the connection is timing out. After
>several timeouts, TCP should attempt to send smaller packets,
>perhaps turning off the DF flag for each packet. If this
>succe
George Bonser wrote:
> I, in fact, HAVE read the RFC.
You don't, at all.
> The initial value for search_high SHOULD be the largest possible
> packet that might be supported by the flow. This may be limited by
> the local interface MTU, by an explicit protocol mechanism such as
>
On Feb 20, 2012, at 10:27 PM, Masataka Ohta wrote:
> Steven Bellovin wrote:
>
>>> Timer timeouts do not affect TCP MSS.
>
>> RFC 2923:
>> TCP should notice that the connection is timing out. After
>> several timeouts, TCP should attempt to send smaller packets,
>> perhaps tur
Steven Bellovin wrote:
>> I'm not sure what, do you think, is the problem, because the
>> paragraph of RFC2923 you quote has nothing to do with TCP
>> MSS.
>
> Sure it does. That's in 2.1; the start of it discusses PMTUD
> failing for various reasons including firewalls.
Firewalls?
Though I ha
Cage nuts.
Sent from my IPhone (pardon the typo's)
On Feb 17, 2012, at 1:35 PM, Jay Ashworth wrote:
> Please post your top 3 favorite components/parts you'd like to see in a
> vending machine at your colo; please be as specific as possible; don't
> let vendor specificity scare you off.
>
> Ch
Apple stickers
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
Randy McAnally wrote:
Cage nuts.
Sent from my IPhone (pardon the typo's)
On Feb 17, 2012, at 1:35 PM, Jay Ashworth wrote:
> Please post your top 3 favorite components/parts you'd like to see in a
> vendin
1. A blow-up mattress and pillow set.
2. A magic wand
3. A highly caffeinated Noc-Tech
> On Feb 17, 2012, at 1:35 PM, Jay Ashworth wrote:
>
>> Please post your top 3 favorite components/parts you'd like to see in a
>> vending machine at your colo; please be as specific as possible; don't
>> le
Spider kvms come well recommended and it's what I see being used around
the datacenter often.
Prefer them vs. the bulkier ones I've used in the past.
web/java is supported, as is VNC -- the latter of which makes them very
usable.
On 02/20/2012 01:05 PM, Seth Mattinen wrote:
> On 2/20/12 12:05 PM,
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