May 2015 - NZNOG - lists.nznog.org

list.waikato.ac.nz Has Moved
by Donald Neal 12 Dec '24

12 Dec '24

NZNOG-People, I have just finished migrating all of the mailing lists held at The University of Waikato from one server to another. I don't have any reason to believe that anything's gone wrong, but please bear with me for today if it turns out that something has. - Donald Neal -- Donald Neal | Q: How many Aucklanders does it take to change Systems Programmer/Analyst | a light bulb? The University of Waikato | A: Pass me that candle and I'll tell you. Hamilton, New Zealand | --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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RE: Sort of OT: are there any "Internet enabled" temperature sens ors/servers for Auckland?
by Greg Clare 18 Aug '21

18 Aug '21

May not be exactly what you are after? However DSE have an Internet weather station at the Albany HQ. http://www.dse.gen.nz/public/webdata/weather.htm Regards Greg > -----Original Message----- > From: Juha Saarinen [mailto:juha(a)saarinen.org] > Sent: Wednesday, 2 January 2002 2:47 pm > To: NZNOG > Subject: Sort of OT: are there any "Internet enabled" temperature > sensors/servers for Auckland? > > > Measuring the outside temperature, with geographic location given. > > -- > Juha > Take off every sig! > > - > To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz > where the body of your message reads: > unsubscribe nznog > - To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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UFB 2M upload issues - DEI markings - Juniper
by Dave Mill 19 Nov '15

19 Nov '15

Hi all We have finally fixed our 2M upload issues on Chorus UFB accelerate plans. Skip to the end of this email if you just want an example fix. Along the way we established a couple of incorrect "facts". Some of which I shared with this list. These were: 1) DEI marked packets were being silently dropped on ingress from the Chorus handover 2) Junos 12.3 fixed this issue Recently I deemed that "fact" 1) was wrong and hence "fact" 2) was a bit irrelevant. Here's a crude diagram of our typical set-up: <Chorus handover> <-> [1] <MX80> [2] <-> MPLS/VPLS over Backhaul fibre <-> [3] <PMR MPLS MX> [4] <-> [5] <PMR BNG> Where the numbers in the square brackets are interfaces where I performed some traffic stats. I deemed that DEI=1 marked packets were still showing up at [1] and [3]. They were not showing up at interfaces [4] and [5]. This deemed my above "facts" incorrect. With Juniper CoS you classify on ingress and rewrite on egress. Once we deemed that DEI marked packets were not being dropped at [1] and instead were being dropped between [3] and [4] we can now rewrite these before interface [4]. As we need to rewrite on egress we'll do this at point [2]. In our test case interface [2] is actually xe-1/2/0.388 . And a simple fix for the issue is under the class-of-service section implement: interfaces { xe-1/2/0 { unit 388 { rewrite-rules { ieee-802.1ad { ieee-802.1ad-dei-rewrite; vlan-tag outer; } } } } } rewrite-rules { ieee-802.1ad ieee-802.1ad-dei-rewrite { forwarding-class best-effort { loss-priority low code-point 0000; loss-priority high code-point 0000; } } } The key is to use a ieee-802.1ad rewrite rule rather than a ieee-802.1 rule. The leftmost bit of the 4 bit code-point is the DEI bit. This is all assuming that all traffic is classified as best-effort at interface [1] - if that is not the case then re-write the DEI bit for your other queues as well. You only need to rewrite the outer vlan DEI bit. This is tested on Junos 12.3R8.7 on a MX80. Thanks to all involved in helping fix this - Steve K, Vance and Ivan especially. Cheers Dave

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UFB Upload Issues
by Dave Mill 21 Aug '15

21 Aug '15

Hi all If any RSPs currently have any reports of 100/20 UFB Right Performing customers having only 2M upload could you contact me offlist? If you do contact me I'm really interested in where your BNG is and where your customers are with the issue. If any end users are on 100/20 with only 2M upload also feel free to contact me. I'm more interested in your location and your ISP in this case. Cheers Dave (representing Inspire Net in this post)

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Chorus EUBA + IPV6
by Simon Allard 03 Aug '15

03 Aug '15

Since it seems to be ipv6 month here at NZNog I thought I would bring this up. Some of you have commented that Orcon is in trial mode for IPv6 and are probably wondering why we haven’t progressed. We have had IPV6 enabled for a while and have a good number of ipv6 customers online now. However we found an issue on the Chorus network which stopped us rolling it out further. (UFB ipv6 was another battle which requires beer!) What we found was some Chrous DSLAMS with certain card types would drop IPV6CP packets in one direction when doing the PPPoE->PPPoA conversation. It would seem that these cards don’t support Ipv6. Weirdly enough it would seem it is the newer card types used for Broadband IP. (citation needed). This in itself isn’t a major but we also found our NFV4 modem would reset its entire PPPoE stack if the IPV6CP conversation started but didn’t complete as expected, so customers would constantly be disconnected and cycle around. (The Genius modem works well with ipv6) The NFV4 issue aside (we are resolving with the Vendor). We approached the Chorus tech team and they helped identify the issue but that’s is where its hit a brick wall. The Chorus op team are not keen on fixing the issue nationwide as it involves new code versions, a massive amount of testing and a long rollout program. (I can understand where they are coming from). To summarise: IPV6 doesn’t work on Chorus EUBA on some line card types Only affect PPPoE->PPPoA translation PPPoE end to end is fine. Chorus say IPV6 not supported on EUBA Customer numbers effected are smallish. We will fix the NFV4 issue, but keen to rollout more IPV6 to all customers, not just the lucky ones on card types which work. Has any other ISP’s (the bigger ones especially) noticed this? As it will require some pressure to get some progress. Cheers, Simon Allard Orcon/Callplus [cid:image92256e.PNG(a)016ea4ce.48a80470] Simon Allard // Senior Network Architect D: 09 550 2790 M: 020 100 0790 F: www.callplus.co.nz<http://www.callplus.co.nz> | www.slingshot.co.nz<http://www.slingshot.co.nz> | www.flip.co.nz<http://www.flip.co.nz> | www.orcon.net.nz<http://www.orcon.net.nz> This message and any attachments contain privileged and confidential information. If you are not the intended recipient of this message, you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. If you have received this message in error please notify the sender immediately via email and then destroy this message and any attachments.

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RE Legal Text on TICSA - Visit to Wellington/ Seeking input
by Beau Murrah 28 May '15

28 May '15

Hello NZNOG list, Some months ago I emailed to the list about my plan to produce a legal manual/critical to guide to the TICSA legislation for network operators/the list. I got some feedback from people on this list and outside of it that there was interest in such analysis and some highlighted a number of particular issues to look into/affecting them. My original hope was to have it completely edited and ready to share to the list about this time - I know updated guidance was/is planned to be released by the NCSC soon (or has already been released). Well, Im still going at it but it is proving difficult topic to write about and finish into a usable and credible form. My text is currently 6500+ words - and I think there are definitely some genuinely some useful or novel things for consideration but it is also all over the place. Initial feedback on the very rough draft was that it doesn’t seem clear exactly exactly who I am writing for - seeming like a mix of legal academic essay and direct practical consideration for network operators and also partly political content about the nature of bureaucracy in this area (the latter Ive decided to cut out as much as possible. I believe writing about this topic is difficult because I realised I don’t know much about what the worklife of a network operator of a truly large network is actually like at all. I have read/seen most all of the publicly available information - close reading of the legislation and related legislation, NCSC guidance, information from this list and so on. None of the technical people I know are network operators. It is hard to gauge what the level/type of interaction with the Agency is actually like broadly. I really don’t want to inadvertently publish any bullcrap technical claims and there is plenty of cyber-paranoid stuff out there already. So, I digress- I am visiting Wellington later this month (28th-31st May) and I would love to get insight from a network operator(s) over beer/coffee/water. I am actually less interested in what TICSA compliance has been like for you - and I don’t expect or want you to “leak” anything or disclose anything - but to hear more about the worklife of a network operator in general day to day that would come under examination in any potential legal proceeding under TICSA. To give a quick preview of my text, it focuses on the fundamental importance of good faith in the legislation to protecting you from any worst case scenario from alleged non-compliance. It considers what remaining in good faith could look like in a situation of alleged non-compliance and what variety of reasons or events could lead to non-compliance while good faith has been retained by the network operator. This depends on a lot on getting an understanding your workflow and obligations and what kind of people are you expected to report to and way that evidence accumulates in your day - much like in any employment situation or potential examination/dispute. There is very limited legal precedent to what Good Faith actually is from legislation and case law around the issue of employment and law and collective bargaining. How good faith might be interpreted involving network operators dealings with the Agency is a very open question and something all network operators ultimately have an interest in. I will say that the guidance provided to you by the NCSC guidance is not legal binding guidance and makes particular assumptions about the nature of good faith. It is very possible that this entire law will never effectively see a day in court if the narrative that this regulation is intrinsically a piece of national security and good faith flatly means following the Agency’s commands or striving to meet their interpretation of compliance. I do not think this is correct nor is anyway certain. I will add though, an actual Court case under this legislation’s confidentiality and evidential provisions will attempt to turn a civil court into a “Secret Court” like FISA this Country has never really seen and will intimidate the most experienced of lawyers, Judges and Court staff - there is a huge impetus to avoid this situation, and hopefully this can be put more in the network operators favour, rather than to scare them. I invite you to email me off-list if you want to meet, or to email on-list to propose a venue/time on-list for people to chat as a group. Happy Budget day, ___________ Beau Murrah Ph: +64 27 375 7897 Email: bmurrah(a)icloud.com <mailto:bmurrah(a)icloud.com> - PGP: https://keybase.io/airbridge <https://keybase.io/airbridge> Linkedin: https://www.linkedin.com/in/bmorganmurrah <https://www.linkedin.com/in/bmorganmurrah> Enrolled Barrister and Solicitor of the High Court of New Zealand (NB: not a lawyer <https://www.lawsociety.org.nz/for-lawyers/joining-the-legal-profession/admi…>)

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Re: [nznog] Need assistance troubleshooting a DNS issue
by Glen Eustace 27 May '15

27 May '15

To satisfy the curious and to provide some closure on this incident, I have included a statement from Ryan Joe. The incident began approx last Oct/Nov and was resolved last week. I would like to thank Peter Lambrechtsen for getting the right people at Spark to contact me and for their perseverance working through what turned out to be more than one non-trivial issue. The impact, unfortunately, was not wide spread and hence had gone largely un-noticed but had the potential to impact a lot more people. I don’t believe that it is my place to go into the details of the issues, what was found and how they were fixed. Perhaps a Spark engineer would be prepared to do so as I believe it would be of interest to many on this list. "As discussed on Friday, this email is to acknowledge that Spark experienced a problem with our DNS which resulted in some Spark customers being intermittently unable to access content hosted at godzone.net.nz <http://godzone.net.nz/>. I’d like to sincerely apologise for any frustration or inconvenience caused by this – we have now fully resolved the issue” Ryan Joe Senior Product Manager - xDSL -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Glen and Rosanne Eustace, GodZone Internet Services, a division of AGRE Enterprises Ltd., P.O. Box 8020, Palmerston North, New Zealand 4446 Ph: +64 6 357 8168 <tel:%2B64%206%20357%208168>, Fax: +64 6 357 8165 <tel:%2B64%206%20357%208165>, Mob: +64 27 542 4015 <tel:%2B64%2027%20542%204015> "Specialising in providing low-cost professional Internet Services since 1997"

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Random number generators
by Nathan Ward 26 May '15

26 May '15

Hi all, As we all know, random numbers are an important part of cryptography, which is required for tools that are important to network operators like the widely deployed RPKI. Most systems today generate random numbers using a PRNG, rather than a dedicated hardware random number generator. A PRNG is only as good as its entropy source - if you have a small amount of entropy, an attacker can start to predict the output of your system’s PRNG, which is obviously bad. There are a number of existing tools for generating entropy: - HAVEGE implementations (i.e. http://www.issihosts.com/haveged/) - Audio/video sources (audio_entropyd and video_entropyd) - Some other things like mouse/keyboard input (i.e. when you wiggle your mouse over that window in whatever that app was that generated keys, puttygen maybe?) - Network interrupts is also a common source A week or two back I was a little hungover and didn’t want to do any real work, and decided to write my own entropy harvesting tool, and have the code available at the below URL: https://github.com/nward/trueentropy I strongly encourage you NOT to run this on production systems, until it has been certified (a good standard to shoot for would be NIST SP 800-90B perhaps), but I would like to get feedback, so please read the code and suggest improvements. Perhaps you have some additional sources of entropy data that would be useful. I would particularly like a good way to “boil down” the entropy generated. The Linux kernel by default can take up to 4096 bits, and this provides far, far more than that, which just seems like a bit of overkill. Please feel free to submit pull requests with ideas for that - it would be a great project to learn a bit of Python. Generally, entropy should not be sourced from a system you don’t control, or sourced over a network you don’t control, for obviously reasons. However, the quality of the data is so good in this case that I believe it negates those concerns. The data is also fetched with HTTPS, so as long as the source doesn't also starting using this as their entropy source (known as entroception) we should be OK - see my recommendation about production systems. -- Nathan Ward (opinions all my own, blah blah blah)

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Dark fibre in the outer wilderness of... Parnell
by Matthew Poole 24 May '15

24 May '15

Hi all I'm getting discouraging information on the availability of dark fibre around the bottom end of St George's Bay Rd in Parnell, near Xero and the Textile Centre. Seems that nobody has any, or at least nobody is mentioning any. If anyone knows of dark fibre capacity in that area could they please contact me off-list. Cheers -- Matthew Poole "The difference between theory and practice is that practice is easier in theory than theory is in practice"

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Re: [nznog] Random number generators
by Nathan Ward 24 May '15

24 May '15

> On 24/05/2015, at 15:12, Dean Pemberton <dean(a)deanpemberton.com> wrote: > > > I can't imagine that if you were an ISP you wouldn't know exactly where any TrueNet probes were in your network. That is possibly true if you’ve paid TrueNet for probes. If your customers have opted to have one without your involvement (which I assume is possible, given ComCom give them money to do just that across NZ) then that’s unlikely. > The only question then is which of the following strategies you employ. > > 1) do nothing. > 2) make this user the best on your network > 3) randomise the results > 4) tweek the results to spell out "what is six times nine” As I’m sure you can imagine, I’m keen to work on solutions to implement (4) if any network providers who have TrueNet portal access are keen for some fun. > Nathan, have you had a look at any other systems (SamKnows) to see if they are any closer to measuring Internet Good-ness? Briefly, but not in a while. My understanding is that SamKnows is much the same as TrueNet - a set of contrived tests, though they do a much better simulation of a web page load than TrueNet and it’s use of “URL Downloads using the WGET command” - but I don’t believe it’s anywhere near perfect in today’s javascript heavy world, where clients cache static content etc. etc. -- Nathan Ward

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