an decide, openly and transparently, if, for example, some piece of
44/8 should be returned to IANA for allocation to the RIRs.
Greetings,
William Waites VE3HW
On 06/03, Mel Beckman wrote:
> I’m constantly amazed at the number of even medium-sized ISPs that have no
> network monitoring. An NMS should go in as the first software component —
> before billing starts and the provider is on the hook to deliver.
>
> The second lacking component is a ticket sy
On 05/03, Jeroen Massar wrote:
>
> IPv6 is not a darknet, you won't find something hidden and unique there.
The Dancing Kame, surely.
> I wonder, if there were a real alert, what the odds are that one
> wouldn't hear about it in 1 minute, 5 minutes, etc even if they didn't
> personally get it.
>
> Obviously edge cases are possible, you were deep in a cave with your
> soccer team, but there must be mathematical modeling of that s
nown public resolver address? There are
reasons why it might be a bad idea, but at least it’s slightly novel.
William Waites
Laboratory for Foundations of Computer Science
School of Informatics, University of Edinburgh
The University of Edinburgh is a charitable body, registered in
Scotland, with
>
> On 30 Mar 2018, at 15:46, Royce Williams wrote:
>
> 77.77.77.77 - Dadeh Gostar Asr Novin P.J.S. Co. (Iran) | 77.77.64/19 |
> recursion-yes
Well, that one's a little odd:
% host news.bbc.co.uk 77.77.77.77
Using domain server:
Name: 77.77.77.77
Address: 77.77.77.77#53
Aliases:
news.bbc.co.u
process (or its parent, or its parent’s parent, …) started. There are
details to be ironed out, of course, but there’s no reason in principle
that it couldn’t be done like this.
The reason that you don’t have to make the operating system solve
the halting problem is because you ask the user.
William
oice with their eyes open. It is important to have this
discussion in the open, and explicitly mark the transition where Internet
Exchange Points re-organise themselves to accommodate spying laws and
gag orders.
William Waites
Laboratory for Foundations of Computer Science
School of Informatics, Uni
rom transit networks becomes the norm, we
are in big trouble.
William Waites
LFCS, School of Informatics, University of Edinburgh
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
Could someone from Cloudflare's operations please contact me off-list?
Thanks,
-w
--
William Waites | School of Informatics
https://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
https://hubs.net.uk/ | HUBS AS60241
The University of Edinburgh
mmon goods such as
Wikipedia:
https://events.ccc.de/congress/2015/Fahrplan/events/7324.html
--
William Waites | School of Informatics
https://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
https://hubs.net.uk/ | HUBS AS60241
The University of Edinburgh is a
e graph it is debatable if this
is a wise or efficient strategy. on the other hand it significantly
widens the operational scope of bgp configuration knobs.
but the point is, you can do peering without a physical presence in a
location, and it is a common thing to do.
cheers,
-w
--
Will
that I wonder if the vendors are doing to
preserve TCAM such as aggregating adjacent networks with the same next
hop into the supernet. That would mitigate the impact of wanton
deaggregation at least and the algorithm doesn't look too hard. Do the
big iron vendors do this?
-w
--
William Wa
l an
order of magnitude more expensive (and an order of magnitude less
expensive than what you need if you want 10s of Gbps).
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
https://hubs.net.uk/ | HUBS AS
ameservers
somewhere else (Esgob do free secondary anycast DNS and they're nice
folk).
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
https://hubs.net.uk/ | HUBS AS60241
The University of Edinb
On Sun, 5 Jul 2015 18:25:26 +, Josh Moore said:
> So basically what you are telling me is that the NAT gateway
> needs to be centrally aggregated.
If you must do NAT it should be as close to the edge as
possible. Today that's usually at the CPE. Maybe tomorrow that's one
hop upstream
On Sun, 5 Jul 2015 06:13:52 +, Mel Beckman said:
> In fact, I show just how to do this using a $99 Apple Airport
> Express in my three-hour online course “Build your own IPv6 Lab”
An anectode about this, maybe out of date, maybe not. I was helping my
friend who likes Apple things con
On Thu, 11 Jun 2015 14:24:31 +0200, Ruairi Carroll
said:
> What I found is that back in early-mid 00's, the industry was a
> black box. Unless you knew someone inside of the industry...
I suspect this is partly a result of the consolidation that went
on. In the mid 1990s when I started
out the inevitable new bugs is an open
question. Personally I give it at least a year before we would even
try to use these seriously for BGP. Until then, it's FreeBSD and
BIRD.
Best,
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Ed
oday.
>From that point of view you guys in Denmark seem to be paying somewhat
over the odds.
Cheers,
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
http://www.hubs.net.uk/| HUBS AS60241
The University
system you will know that writing
netmasks in hex is prefectly normal.
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
http://www.hubs.net.uk/| HUBS AS60241
The University of Edinburgh is a charitable body
numbers are significantly more than the expected peak rate. But
24/1.5, a factor of 16, is a very different story.
-w
--
William Waites | School of Informatics
http://tardis.ed.ac.uk/~wwaites/ | University of Edinburgh
The University of Edinburgh is a charitable body, register
re we have some kind of an "answer" to that question... And
it's not a very good one...
--
/"\| William Waites
\ / ASCII Ribbon Campaign | School of Informatics
Xagainst HTML e-mail | University of Edinburgh
/ \ (still going)
sting ones that might emerge if
the restriction of asymmetry was no longer commonplace...
-w
--
/"\| William Waites
\ / ASCII Ribbon Campaign | School of Informatics
Xagainst HTML e-mail | University of Edinburgh
/ \ (still going) |
On Fri, 13 Feb 2015 11:43:14 +1100, Ahad Aboss said:
> In a sense, you are an artist as network architecture
> is an art in itself. It involves interaction with time,
> processes, people and things or an intersection between all.
This Friday's off-topic post for NANOG:
Doing art is
On 18 Jan 2015 18:15:09 -, "John Levine" said:
> I expect your users would fire you when they found you'd blocked
> access to Google.
Doesn't goog do certificate pinning anyways, at least in their web
browser?
pgphGF6ZqCQVo.pgp
Description: PGP signature
On Tue, 25 Nov 2014 17:36:47 +0200, Martin T said:
> Last but not least, maybe there is altogether a more reliable
> way to understand the relationship between the operators than
> aut-num objects(often not updated) in RIR database?
The first thing to do is look and see if the policy
On Fri, 21 Nov 2014 11:07:49 +0200, Mark Tinka said:
>> We own an AS number and our IP space but at the last minute
>> learned our state network is advertising our network using two
>> different ASNs (neither ours)
This will work, as in the BGP path selection algorithm will work as
On 16/09/14 16:26, Jay Ashworth wrote:
I see also a suggestion, credited to Dave Eastabrook (sp?) of .ab, which
apparently stands for Alba, which I will assume has historical significance
(the country name in Scots Gaelic, perhaps?)
It has current significance, as Gaelic is recognised as an off
On Tue, May 20, 2014 at 10:35:56AM -0400, Harald Koch wrote:
>
> Might help if all your hosts have their own IPv6 addresses
That was meant to be implied... But...
On Tue, May 20, 2014 at 09:10:56AM -0600, Derek Andrew wrote:
> They take out our campus, both IPv4 and IPv6.
That's interesting, I
On Tue, May 20, 2014 at 10:21:43PM +0800, Pui Edylie wrote:
>
> May I know what is the best approach so that Google would not ban our
> Natted IP from time to time as it suspect it as a bot.
IPv6?
On Thu, Mar 27, 2014 at 05:09:05AM +, Warren Bailey wrote:
> It's not 802.11 and it doesn't act that way.
Actually most of the installations I've seen -- and my day job is
working with community networks around Scotland that have built all
manner of strange things -- the problems most often ha
On Thu, Mar 27, 2014 at 12:02:30AM -0400, Miles Fidelman wrote:
> Laser link, and pray for clear weather?
You'll have to pray really hard around here, especially in South
Queensferry down by the water...
We actually have an FSO link between two tall buildings in South
Edinburgh. Only about 500m.
On Thu, Mar 27, 2014 at 03:35:20AM +, Warren Bailey wrote:
>
> You are screwed for LOS microwave, 60mbps on a microwave hope requires
> real life engineering to function correctly.
Well now, really. Yes it needs engineering, but nothing spectacularly
difficult. The upper bound on distance the
On Wed, Mar 26, 2014 at 10:30:27PM -0500, Nick wrote:
>
> Does any have contacts in Edinburgh Scotland who can provide WISP
> service at the Hopetoun House and Dundas Castle. I would like to
> have 20-60mpbs to for 2 days of services.
There is a *chance* that we (http://hubs.net.uk/) can help. Ou
>Is Ken Thompson turning over in his grave yet?
I certainly hope not...
On Fri, 27 Dec 2013 07:23:36 -0500 (EST), "Justin M. Streiner"
said:
> You end up combining some of the downsides of a hardware-based
> router with some of the downsides of a server (new attack
> vectors, another device that needs to be backed up, patched, and
> monitored...
Mig
On Sun, 1 Dec 2013 20:25:36 +, Sina Owolabi said:
> Its cyclical, but I have not tried to graph/measure its
> repetition before now... Body of tidal water..could be
This is speculation until you have measurements, but if this is the
case I'd wager you are having reflected signal int
On Sun, 1 Dec 2013 17:56:51 +0100, Notify Me said:
> I have a very problematic radio link which goes out and back on
> again every few hours.
Is "every few hours" regular/cyclical? Does the radio link cross a
tidal body of water?
-w
pgpubC2NiHoOH.pgp
Description: PGP signature
On Wed, 20 Nov 2013 14:08:53 -0500, Ray Soucy said:
> I'm very interested in other user experiences with Ubiquity for
> smaller deployments vs. traditional Cisco APs and WLC.
> Especially for a collection of rural areas. The price point and
> software controller are very attracti
On Fri, 11 Oct 2013 10:41:46 -0700, joel jaeggli said:
> you take all the useful information that an IGP could be (or is)
> providing you, and then you ignore it and do something else.
Yes, that's another part of the conversation, encouraging the use of
an IGP, which has been a source of
I'm having a discussion with a small network in a part of the world
where bandwidth is scarce and multiple DSL lines are often used for
upstream links. The topic is policy-based routing, which is being
described as "load balancing" where end-user traffic is assigned to a
line according to source ad
On Tue, 10 Sep 2013 10:27:15 -0700, Bill Woodcock said:
> or to make an ISP class license requirement that every service
> provider network deliver traffic that has source and destination
> addresses within a region, without passing the traffic across
> the border of the region.
Le 10-01-05 à 21:29, Dobbins, Roland a écrit :
Stateful firewalls make absolutely no sense in front of servers,
given that by definition, every packet coming into the server is
unsolicited (some protocols like ftp work a bit differently in that
there're multiple bidirectional/omnidirection
e temporary measures if
possible in the meantime. That type of vigilante would seem
to correspond quite closely with the job of the responsible
network security/operations person.
Cheers,
-w
--
William Waites VE2WSW<[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 8894 9942
CD70 0498 8AE4 36EA 1CD7 281C 427A 3F36 2130 E9F5
aving multiple tunnels (cf multiple address ranges) is problematic.
Of course
these days perhaps perhaps the IPv4 variant could be done with a
stateful NAT.
Maybe case could be made for IPv6 NAT (and site-local addresses?) in
this scnario...
- -w
- --
William Waites &l
B-C looks like p2c and A-B could be either p2p or c2p.
Cases of partial transit, where B might repeat C's routes to peers but
not
to upstrem providers are not, AFAIK treated in the model.
Cheers,
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.
is always,
by definition, valley-free and that the labels are not really
properties of the graph but properties of the path? I'm not sure.
Bonne vacances,
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 8894 9942
CD70 0498 8AE4
in reality.
I think that yes, the valley-free property is a necessary but not
sufficient
criteria for generating the set of in-reality-valid paths on the
Internet.
Cheers,
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 889
uot;
http://www.caida.org/publications/papers/2006/as_relationships_inference/
Cheers,
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 8894 9942
CD70 0498 8AE4 36EA 1CD7 281C 427A 3F36 2130 E9F5
-BEGIN PGP SIGNATURE--
eir seats, spilling their coffees. How dare you destroy
so many keyboards?
I didn't mean to imply that either of those was actually
workeable ;)
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 8894 9942
CD70 0498 8AE4 36EA 1CD7
lease find an alternative method of tidying up the trash and don't
stir that nest of hornets.
Workeable suggestions? So far I've seen,
* organized shunning
* BGP blacklists
Cheers,
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx
done quickly in specific instances.
Of course a parallel procedure would be necessary for each bit of the
ROW..
- -w
- --
William Waites <[EMAIL PROTECTED]>
http://www.irl.styx.org/ +49 30 8894 9942
CD70 0498 8AE4 36EA 1CD7 281C 427A 3F36 2130 E9F5
-BEG
Le 08-08-01 à 15:05, Marshall Eubanks a écrit :
I think that 161.164.248.0/21 and AS 28551 may be hijacked.
traceroute to 161.164.248.1 (161.164.248.1), 64 hops max, 40 byte
packets
7 tengige0-3-0-3.auvtr1.Aubervilliers.opentransit.net
(193.251.241.253) 78.728 ms 79.154 ms 79.548
Le 08-07-28 à 18:27, Jon Lewis a écrit :
Bit bucket path.
Evidently.
As I said, this is surprising behaviour, but not simple de-peering.
And I'm
Why is it surprising? Sounds more like a repeat performance to me.
Back when Level3 depeered Cogent, it was said that Cogent was
already buy
Le 08-07-28 à 17:29, Patrick W. Gilmore a écrit :
One should check one's assumptions before posting to 10K+ of their
not-so-close friends.
Firstly I missed the actual incident since I was off the 'net for an
extended period about that
time, so apologies for any rehash.
Neither network h
Le 08-07-28 à 17:12, [EMAIL PROTECTED] a écrit :
Example: A York University professor was sitting at his desk at
work in
March 2008 trying to reach an internet website located somewhere in
Europe.
[...] York’s bandwidth supplier is Cogent which had severed a
peering relationship
with a
Hi all,
Does anyone have a contact or a known administrative path to get
NS glue added to
domains registered with Network Solutions? Or is the only choice to
move the domains in
question to a different registrar?
(Perhaps more appropriate for dns-operations, but as it is an
operation
Le 08-07-09 à 19:36, Ariel Biener a écrit :
I have been pondering over this issue for some time now (not too much
time to invest on it), since I wanted to created a duplicate model
of our
production network in a test environment, not connected to any outside
network (thus cannot peer, same p
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