Re: Subsea availability
I'll put this as a starter http://submarine-cable-map-2018.telegeography.com/ There's probably better by now Martin On Tue, 22 May 2018 at 06:13, Mehmet Akcin <meh...@akcin.net> wrote: > Hello there, > > I am working on a masters project idea to create an interactive map of the > world’s subsea cables (cls to cla without local loops from cls to dc) > > I would like to know if anyone have worked with something like this in the > past, and whether you think it would be cool to have a map where you can > see subsea cable availability. > > I am also going to be at nanog denver to talk about this project with > people. Let me know if you are available and interested in talking on ways > to collaborate. > > I have few ideas on how to make this work with using ripe atlas probe like > devices installed in strategic locations. > > Mehmet > -- -- Martin Hepworth, CISSP Oxford, UK
Re: Free access to measurement network
You been in contact with the guys at Samknows.com ? On Thu, 14 Dec 2017 at 15:09, Janusz Jezowicz <jan...@speedchecker.xyz> wrote: > Hello, > > Feel free to shoot me down if you think I am posting against the rules of > this mailing list but I think it may be helpful for some guys here. > > We have over 1000 routers deployed across US/Canada in over 700 locations > and 130+ networks. Those routers can run network tests such as > traceroutes,pings,http tests and can be automated using API. > > I am happy to give out access to anyone on the list - free of charge (inc. > for commercial purposes). We are just interested in seeing what can be > built on top of it and have capacity now. > > Please send me an email off-list if you are interested or want more > information > > Thanks > > Janusz Jezowicz > Speedchecker Ltd > -- -- Martin Hepworth, CISSP Oxford, UK
Re: Major outage in Texas at
Looks like not just Texas.. https://twitter.com/ZMarotrix/status/823853561582850048 -- Martin Hepworth, CISSP Oxford, UK On 24 January 2017 at 11:04, Joshua <joshuaw...@hotmail.com> wrote: > I spoke with at just now all they said was all major cities and > surrounding areas in Texas were down. > > Sent from my iPhone > > > On Jan 24, 2017, at 4:50 AM, Joshua <joshuaw...@hotmail.com> wrote: > > > > Thanks for the info. I just know 100% of our users on att have no > connection across the entire state. > > > > Sent from my iPhone > > > >> On Jan 24, 2017, at 4:37 AM, Marty Strong <ma...@cloudflare.com> wrote: > >> > >> Of The 6 RIPE Atlas probes on AT in Texas, only 1 went down, about 2 > hours ago. > >> > >> http://i.imgur.com/YeM7inZ.png > >> > >> Regards, > >> Marty Strong > >> -- > >> Cloudflare - AS13335 > >> Network Engineer > >> ma...@cloudflare.com > >> +44 7584 906 055 > >> smartflare (Skype) > >> > >> https://www.peeringdb.com/asn/13335 > >> > >>> On 24 Jan 2017, at 10:13, Joshua <joshuaw...@hotmail.com> wrote: > >>> > >>> Looks like almost the entire state is down. I don't have any other > details > >>> > >> >
Re: Gmail down
Ok from here in the UK -- Martin Hepworth, CISSP Oxford, UK On 5 July 2016 at 15:53, Josh Luthman <j...@imaginenetworksllc.com> wrote: > Looks like it's back up for both my personal and work accounts (issue > limited to the web interface). > > 851 reports and climbing every time I refresh @ > http://downdetector.com/status/gmail > > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > On Tue, Jul 5, 2016 at 10:49 AM, Josh Luthman <j...@imaginenetworksllc.com > > > wrote: > > > Web interface is broken, downdetector sure sees activity. This attempt > is > > from mobile. > > > > Josh Luthman > > Office: 937-552-2340 > > Direct: 937-552-2343 > > 1100 Wayne St > > Suite 1337 > > Troy, OH 45373 > > >
Re: Huge Level 3 ipv4 issues?
seeing issues across GX in the UK as well... -- Martin Hepworth, CISSP Oxford, UK On 12 June 2015 at 10:51, David Hubbard dhubb...@dino.hostasaurus.com wrote: Experiencing packetloss all over the place (chicago, tampa, atlanta) on Level 3's network; can't even reach them from Brighthouse residential. IPv6 seems to still be working fine, but of course Brighthouse doesn't offer that lol. Anyone seeing the same? David
Re: From Europe to Australia via right way
There's a new AAE-1 cable currently being laid (sunk!) that comes online early 2016 that will help. But right now alot of traffic cuts across the US as it's still the 'best' route for reasons other that latency as others have already mentioned. The new AAE-1 will have 40Tbps connections from Europe to Hong Kong so hopefully the routes will start to migrate in 2016 and give us an Easterly route to APAC that has enough capacity to be stable in that direction -- Martin Hepworth, CISSP Oxford, UK On 2 April 2015 at 15:03, Jared Mauch ja...@puck.nether.net wrote: On Thu, Apr 02, 2015 at 10:43:25AM +0200, Elmar K. Bins wrote: piotr.1...@interia.pl (Piotr) wrote: What's the reason, there are some telecoms,isp that have paths eastbound, southbound but in routing table they prefer longer path via US ? Come on - you do know that it's called policy routing for a reason? Costs, reserved bw/s for high-rollers, capacity... Sure, you can use static routes as well[1]. For those that are interested you can take a look at http://www.submarinecablemap.com/ to get an idea of what path might be feasible. I will say that telecom costs tend to be related to political stability, so when computing shortest path cost often comes into play. Also, What I'm often reminding people is low-latency isn't always the right solution, because loss is more important. I am less concerned about another 25-100ms if there is little jitter and zero loss. - Jared [1] - https://twitter.com/jaredmauch/status/583227901555961856 -- Jared Mauch | pgp key available via finger from ja...@puck.nether.net clue++; | http://puck.nether.net/~jared/ My statements are only mine.
Re: File transfer speed between Hong Kong and Johannesburg, South Africa
Probably quite nasty delays as anything over a few milliseconds delays really badly affects SMB around 90 ms it's just about usable and above 120 ms forget it. have a look at some of the WAN accelerator products esp Aryaka who'll be able to set you up in minutes with no capital outlay.. http://www.aryaka.com/products/network-as-a-service/global-network/ -- Martin Hepworth, CISSP Oxford, UK On 11 July 2013 15:04, Luan Nguyen luan20...@gmail.com wrote: Hello folks, Does anyone know what's the average speed for windows file transferring (SMB2) between Hong Kong and Johannesburg? Any guide on how to calculate/estimate this? Thanks. Regards, -Luan
Re: File transfer speed between Hong Kong and Johannesburg, South Africa
also check the steelhead isn't getting swamped by too many connections. The Units are rated at and have a fixed max number of connections per device.If you need more connections you need a bigger/more costly device. -- Martin Hepworth, CISSP Oxford, UK On 11 July 2013 18:14, Luan Nguyen luan20...@gmail.com wrote: Thanks guys. We do have Riverbed Steelhead appliances at both end. According to calculation, maximum throughput can be attained is ~330KB/sec. With the Riverbed cold transfer, we should get ~600KB/sec. But I can only get ~250KB/sec with the Steelhead doing its stuff for 500M file so plenty of time for whatever to kick in. Iperf and netperf show great results though. I guess I will be sampling results hourly for comparison. Regards, -Luan On Thu, Jul 11, 2013 at 11:37 AM, Joe Loiacono jloia...@csc.com wrote: The maximum you can expect is: Rate (MSS/RTT)*(1 / sqrt(p)) where p is the probability of packet loss. Credit: Mathis, Semke, Mahdavi Ott in Computer Communication Review, 27(3), July 1997, titled The macroscopic behavior of the TCP congestion avoidance algorithm. ( http://www.infoblox.com/community/blog/tcp-performance-and-mathis-equation ) Joe [image: Inactive hide details for Luan Nguyen ---07/11/2013 10:06:19 AM---Hello folks, Does anyone know what's the average speed for wi]Luan Nguyen ---07/11/2013 10:06:19 AM---Hello folks, Does anyone know what's the average speed for windows file transferring From: Luan Nguyen luan20...@gmail.com To: nanog@nanog.org Date: 07/11/2013 10:06 AM Subject: File transfer speed between Hong Kong and Johannesburg, South Africa -- Hello folks, Does anyone know what's the average speed for windows file transferring (SMB2) between Hong Kong and Johannesburg? Any guide on how to calculate/estimate this? Thanks. Regards, -Luan
Re: Suggestions for managed DNS provider?
Another vote for Dyn, about 10% cost of UltraDNS and very similar features and way of billing (queries per second) Route 53 seems very popular as well. -- Martin Hepworth, CISSP Oxford, UK On 14 February 2013 19:58, David Hubbard dhubb...@dino.hostasaurus.comwrote: Hi all, anyone have suggestions for very stable/reliable managed DNS? Neustar/UltraDNS is an obvious option to look at, just curious about alternatives. Cost effective would be nice, but stable under attack is better. Thanks, David
Re: Google burp
Same in uk as well just got service back On Wednesday, 31 October 2012, Blair Trosper wrote: I was editorializing the quantity of tweets about the Google outage more so than the quality of service of Twitter. :) Apologies. On Wed, Oct 31, 2012 at 5:01 PM, John Adams j...@retina.net javascript:; wrote: Hey now, we're doing fine over here at Twitter. :P -j On Wed, Oct 31, 2012 at 2:55 PM, Blair Trosper blair.tros...@updraftnetworks.com javascript:; wrote: I guess I'll be the one to ask...what's going on over at Google? Service interruptions and front-end errors all over the place across what appears to be all services, though Gmail seems to have bounced back up. Google's service disruption is about to bring Twitter's service to its knees as people complain and try to figure out what's going on. Blair Trosper Updraft Networks The North Texas GigaPOP -- -- Martin Hepworth, CISSP Oxford, UK
Re: Detection of Rogue Access Points
How about some of the free network auditing tools like nmap even Spiceworks to detect the devices on your network? Martin On Sunday, 14 October 2012, Jonathan Rogers wrote: Gentlemen, An issue has come up in my organization recently with rogue access points. So far it has manifested itself two ways: 1. A WAP that was set up specifically to be transparent and provided unprotected wireless access to our network. 2. A consumer-grade wireless router that was plugged in and just worked because it got an address from DHCP and then handed out addresses on its own little network. These are at remote sites that are on their own subnets (10.100.x.0/24; about 130 of them so far). Each site has a decent Cisco router at the demarc that we control. The edge is relatively low-quality managed layer 2 switches that we could turn off ports on if we needed to, but we have to know where to look, first. I'm looking for innovative ideas on how to find such a rogue device, ideally as soon as it is plugged in to the network. With situation #2 we may be able to detect NAT going on that should not be there. Situation #1 is much more difficult, although I've seen some research material on how frames that originate from 802.11 networks look different from regular ethernet frames. Installation of an advanced monitoring device at each site is not really practical, but we may be able to run some software on a Windows PC in each office. One idea put forth was checking for NTP traffic that was not going to our authorized NTP server, but NTP isn't necessarily turned on by default, especially on consumer-grade hardware. Any ideas? Thank you for your time, Jonathan Rogers -- -- Martin Hepworth, CISSP Oxford, UK
Re: April fools joke?
On Sunday, 1 April 2012, chris wrote: April 1st or not its the gist of that story is probably already true whether you know it or not. On Sun, Apr 1, 2012 at 10:30 AM, Justin Wilson li...@mtin.netjavascript:; wrote: I hate April 1 on the Web. You are right you never can tell. I would be appalled if someone as respectable as the BBC stoops to downright dumb pranks. However, it is England. They have some of the most strict laws in the Free world. I hate the Interweb on April 1. lol -Original Message- From: Leigh Porter leigh.por...@ukbroadband.com javascript:; Date: Sun, 1 Apr 2012 10:45:51 + To: nanog@nanog.org javascript:; nanog@nanog.org javascript:; Subject: April fools joke? http://www.bbc.co.uk/news/uk-politics-17576745 It's sad when you just can't tell with things like this.. -- Leigh Re visit of the stuff that was thrown out about 3 years when raised by Labour govmt and berated by the present govemt when they were in opposition Home Office and others want it but most businesses don't and the civil liberties guys are quite against it - requirement on any online or comms provider to keep logs for ages! Martin -- -- Martin Hepworth Oxford, UK
Re: Outdoor Wireless Access Point
On Saturday, 31 March 2012, ML wrote: On 3/31/2012 9:41 AM, Faisal Imtiaz wrote: I understand Ubiquity gear is very common, in use and available in Iran ... Look at their unifi product line. Faisal On Mar 31, 2012, at 5:38 AM, Shahab Vahabzadehsh.vahabza...@gmail.com wrote: Hi there, I asked for a wireless solution for a university, in which they want indoor wireless solution for more than 5 building (at least two floor) and outdoor wireless solution for near 160m*280m garden. As I look for maps we need at least 3 or 4 outdoor radio, I think in these networks the best solution is to have only one SSID in whole network to give mobility for the network, is this called ad-hoc? or it has an other name? I do not know if I could ask question clearly or not, suppose we have 4 radio but only one SSID is broadcasting and when you are near the radio is near to you you will get service from that one, as this solution must be implement for indoor ones too. And if there is any good company which can both indoor and outdoor solution and they have shipping to Iran too or reseller in Iran please give me the url. Thanks -- Regards, Shahab Vahabzadeh, Network Engineer and System Administrator Cell Phone: +1 (415) 871 0742 PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 BF90 As far as I know Ubiquiti's UniFi product doesn't yet have a single SSID across multiple APs. Ruckus does have indoor and outdoor APs that when used in conjuction with their ZoneDirector product will provide a seemless SSID. I do not know if it is available in Iran though. Yes it does and can have a guest SSID as well along with hand off to a ticket server http://www.ubnt.com/unifi Check out the specs Nice and cheap compared to others on the market too -- Martin -- -- Martin Hepworth Oxford, UK
Re: root zone stats
On Sunday, 11 March 2012, David Conrad d...@virtualized.org wrote: Anurag, On Mar 11, 2012, at 9:11 AM, Anurag Bhatia wrote: Thanks for sharing interesting data. Was wondering you have map of g TLD server locations? Something like that of root servers? You would probably need to ask the operators of the gTLDs. As they are (generally) commercial services, whether they publish the locations of their servers is a business decision that they would each independently make. Regards, -drc Correct, location of the .uk servers aren't published as they are treated as part of national infrastructure and protected as such -- Martin Oxford uk -- -- Martin Hepworth Oxford, UK
Re: Overall Netflix bandwidth usage numbers on a network?
Also checkout Adrian Cockcroft presentations on their architecture which describes how they use aws and CDns etc Martin On Saturday, 3 December 2011, Jonathan Towne jto...@slic.com wrote: Wow.. not sure how I missed that option. Exactly why I posted before dumping a bunch of time into a bottomless bucket! Thanks.. :) -- Jonathan Towne On Sat, Dec 03, 2011 at 12:56:34AM +, Andrew Mulholland scribbled: # Surely this is what Netflow is for. # # # no need to re-invent the wheel. # # # Andrew # # # On Sat, Dec 3, 2011 at 12:47 AM, Jonathan Towne jto...@slic.com wrote: # # Been lurking for a while and posed a question to a few folks without much # response, figured someone here might've done something like this already. # # So, before I go about building wheels that already exist: # # I'm interested in doing a bit of a passive survey of bandwidth usage on # my network (smallish isp, a few thousand DSL/FTTx customers) to understand # the percentage of average/overall traffic generated by Netflix streaming. # # What I have available is a few gigabit transport switches providing me with # mirror ports, a juniper MX series router running 10.4 code, plenty of BSD # machines and libpcap-fu. # # What I'm looking for is either a timed-average or moments-glance number # of the traffic. For instance, on an interface moving 150mbit/sec total, # 50mbit/sec of it is attributed to Netflix right now. I'm pretty handy with # RRDtool, so that isn't out of the question, either. # # I've really only spent dinnertime considering this, but have come up with # two potential approaches so far, and haven't actively investigated either # of them: # # * firewall terms and counters on the MX router + snmp # * writing a quick libpcap application to filter and count in a completely # out-of-band way on one of my monitoring hosts # # Some challenges I can see: # # * Nailing down the streaming source for Netflix, that is, IP ranges etc. # * Making assumptions about CDN source IPs that could be used for something # else, and further, should I care? # # Happy to hear thoughts about this, helpful or not! I know Netflix # themselves # have probably done plenty of studies like this, but pretty likely not # limited # to my customer base. Not aiming for anything creepy or crazy, just some # vague understanding of what's going on, and the ability to do some trending # for future planning. # # -- Jonathan Towne # # -- -- Martin Hepworth Oxford, UK
ouch..
http://www.overpromisesunderdelivers.net/ -- Martin Hepworth Oxford, UK
Re: Hotmail?
Have a look at the Hermes mail system at cam.Ac.uk, built buy among people Philip Hazel of exam fame It will give you some insight into the challenges of building a scalable high perfomance mail system. Martin On Wednesday, 8 June 2011, Steve Spence steve.spe...@arkitechs.com wrote: That what I found with most the open source /Linux mail products that customizing and extending can be difficult and a lot of time and effort. The exchange is one of the easiest ways to roll out large scale web base email if just expensive in upfront costs. Interns of Hotmail they initially use to use Solaris for the MTA and storage and FreeBSD for the web services ( Apache ) they suppose of migrated windows by now using windows products Again I think this highly customize solution which may not be very useful http://en.wikipedia.org/wiki/Hotmail we went through a similar search for a high volume solution which we could customize and brand right now we using we high a hybrid of (exchange/Icewarp/Atmail/ two layers of spam filtering ) Steve -Original Message- From: Ryan Pugatch [mailto:r...@linux.com] Sent: Tuesday, June 07, 2011 11:40 PM To: John LeCoque Cc: nanog@nanog.org Subject: Re: Hotmail? What about starting with Zimbra's Open Source edition, and building onto it? Let me just step in here and say.. it's tough to build onto Zimbra. At work, we support ~1000 users on Zimbra (network edition), with hundreds of thousands of messages flowing through daily, and it doesn't like you tinkering with stuff under the hood. Most of your customizations get blown away when you upgrade. That said, I know of some organizations who customize it like crazy (I had heard that Lycos's free mail system is Zimbra-based, and Yahoo as well). Once you deviate, though, don't expect to stick to Zimbra's releases. It might be easier to just start fresh with postfix, amavis, spamassassin, dovecot, etc. We've also run into some pain in scaling it out (they want you to use Red Hat Clustering, but there's no great way to scale out the mail store regardless). Ryan -- -- Martin Hepworth Oxford, UK
Re: SLA for voice and video over IP/MPLS
I'd be looking at packet ordering perhaps for voice and esp video, having the packets arrive in order makes a huge difference for video On Friday, 25 February 2011, Diogo Montagner diogo.montag...@gmail.com wrote: Hello, I am looking for industry standard parameters to base the SLA of one network regarding to voice, video and data application. Which are the the accepted values for jiiter, delay, latency and packet loss for voice, video and data in a IP/MPLS ? Thanks ./diogo -montagner -- -- Martin Hepworth Oxford, UK
Re: Facebook issue
+1 from the uk On Thursday, 16 December 2010, Michael Thomas m...@mtcc.com wrote: On 12/16/2010 01:34 PM, andrew.wallace wrote: Anyone having issue with Facebook? Andrew Yep. Mike -- -- Martin Hepworth Oxford, UK
Re: Out-of-band paging
On 28 July 2010 15:42, Leo Bicknell bickn...@ufp.org wrote: In a message written on Wed, Jul 28, 2010 at 04:38:25PM +0200, Joel M Snyder wrote: But... you can take this sort of 'single point of failure' argument almost as far as you want. In the security business (where I spend most of my time), I see people do this a lot--they get deep into the ultra-ultra-ultra marginal risk, which takes then an enormous amount of money to mitigate. It's an easy rat hole to explore, and often fun. I agree worring about the cell site is not the worry. However I suspect many of the folks relying on SMS have no idea how it works inside the carrier. There are in fact other points of failure that may be much more single point. For instance your SMS likely passes through a database in the carrier network (in case your phone is off). That's redundant, right? Fully RAID'ed and a hot standby spare and all that, after all it probably handles SMS's for a few million customers. Not always. -- Leo Bicknell - bickn...@ufp.org - CCIE 3440 PGP keys at http://www.ufp.org/~bicknell/http://www.ufp.org/%7Ebicknell/ (view from the UK where SMS is very very prevalent) TXT's can take ages to deliver (hours days not uncommon). GSM networks can get put to emergency access only so they don't get swamped when a civil emergency occurs and emergency workers need priority access to mobile network. eg 7 July 2005 in London -- Martin Hepworth Oxford, UK
stumbleupon contact
Hi If there's anyone here from stumbleupon can you please contact me reguarding a security issue please. To everyone else, appologies for the noise. -- Martin Hepworth Oxford, UK
Re: edgedirector.com
2009/11/17 Jeffrey Lyon jeffrey.l...@blacklotus.net You really can't compare EdgeDirector's network to UltraDNS which is much larger and more resilient by leaps and bounds. I've spoke with the owner of ED before and decided against using the service. Right now we're using Afilias and the price isn't much worse, the GUI is much nicer, and the network is much larger and more redundant. We recently walked out on an UltraDNS contract due to deceptive billing practices. They're a corrupt company, imho. Jeff On Tue, Nov 17, 2009 at 11:30 AM, Martin Hepworth max...@gmail.com wrote: Any one got any comments about edgedirector.com's service(s), esp wrt to load balancing, geo-ip stuff etc. They seem to be way way cheaper than ultradns, esp when you adding in geo-ip load sharing and such. So is there wnay reason WHY its cheaper? -- Martin Hepworth Oxford, UK -- Jeffrey Lyon, Leadership Team jeffrey.l...@blacklotus.net | http://www.blacklotus.net Black Lotus Communications of The IRC Company, Inc. Platinum sponsor of HostingCon 2010. Come to Austin, TX on July 19 - 21 to find out how to protect your booty. Jeffrey can't see any info on the Afilias web site on them doing stuff with GNS type solutions - maybe I should do something odd like talk to them ;-) -- Martin Hepworth Oxford, UK
edgedirector.com
Any one got any comments about edgedirector.com's service(s), esp wrt to load balancing, geo-ip stuff etc. They seem to be way way cheaper than ultradns, esp when you adding in geo-ip load sharing and such. So is there wnay reason WHY its cheaper? -- Martin Hepworth Oxford, UK
Check out my photos on Facebook
Hi Nanog, I invited you to join Facebook a while back and wanted to remind you that once you join, we'll be able to connect online, share photos, organize groups and events, and more. Thanks, Martin To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=681923447k=RVMZQ2U532WMYKMCYFX5Pr nanog@nanog.org was invited to join Facebook by Martin Hepworth. If you do not wish to receive this type of email from Facebook in the future, please click on the link below to unsubscribe. http://www.facebook.com/o.php?k=464bf3u=699384721mid=777bd0G29afc391G0G8 Facebook's offices are located at 156 University Ave., Palo Alto, CA 94301.
