Re: [nznog] Affordable TICSA LI Solution and Support

29 Jun 2018

      Hi Shane,
I appreciate your response and it sounds like you and the OpenLI team making great progress, i wish the project and deployments all the best. Writing packet capture isnt hard and anyone with a compiler can do it. Of course a little coding b/gnd helps and depending on what your
trying to do, the level of hardware knowhow you need.
Take 100% packet capture - 'shouldnt' be a problem at a constant 1 pps, but it will be if you take 2 s to process. Lets say you optimize hw down .5 s with a DAG (i worked their native's ~2004) your still not going to make it.
Timing values are too ilustrate my point and my take away from you response is OpenLI is basically targeting the general usecase here in NZ where say GE or 10G ~50/60 pk. % link utilization is still pretty OK and fit-for-purpose. I assume here your OpenLI app (NWO->IAF/MF ASN.1Enc/MD->HI) is
well optimized from your excellent experience too. One suggestion maybe to bench it with XIA/Spirent STC for thruput vs line-rate/packet sizes vs expected from NOC. I dont use cap libraries or anything like that myself, my arch/interface is very different in exo/no net_dev, zero intr,dis flow
handling depending on the ICs i got on hand (i have a french foreign legion policy for hardware - survive the bench and your in ). LI started here in NZ but was taken to another level in the US with massive linerates and volumes - vetting starts with corner case burntests, sinking IPGs <9.7ns ..<.97ns (100G+) with 1 Target frame - and if you can catchit send try to send that 1 frame, only after that you get to do something usefull and process it. Sounds easy as
you can appreciate back in the day with north/south PCIE this was a massive feat, no SoCs root/pcie qpi we have today.
Obviously this level of performance is bit OTT for our general LI small ISP market, but data volumes aint gonna go down - cheers for the heads up. Again wish you and the
OpenLI project team much success.
regards
Brian Parsons BE(E&EE) MIEE | CEO TFE | LI TICSA SIGINT
---------------------------- Original Message ----------------------------
Subject: Re: [nznog] Affordable TICSA LI Solution and Support

From: "Shane Alcock" 

Date: Fri, June 29, 2018 2:38 pm

To: brianparsons(a)subpico.com

Cc: nznog(a)list.waikato.ac.nz

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Hi Brian, all,
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As the primary developer on the OpenLI project, I've been asked to address
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some points that you've raised and correct any misconceptions people might
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have about OpenLI as a result of this thread.
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For anyone concerned about a possible lack of experience in writing packet
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capture software, most of my 14 years working here at the WAND network
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research group has been dedicated to both writing and running software for
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high speed passive capture and analysis projects. I am one of the primary
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authors and maintainers of libtrace [1] [2], which is widely used both in
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academia and industry (as well as the OpenLI software itself). Libtrace
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supports a variety of capture methods and hardware, including DAG and DPDK,
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and has a parallel API for writing multi-threaded packet capture
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applications, so I have a reasonable understanding of what is required of
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both hardware and software to do high-rate packet capture and encoding.
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OpenLI is not offering a "complete" solution to your TICSA problems. We
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provide software that can capture packets and convert them into ETSI
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records, wrapped in a centralised provisioning system for managing
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intercepts, along with a mediation function that will push the resulting
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records to the appropriate agency. Integration of OpenLI into your network
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is a matter for the operator; however, we have been working closely with
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the organisations that responded to our initial requests for funding to get
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their deployments up and running.
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Longer term, we are starting to have conversations about what support
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models we want to provide in the future, especially after the feedback I
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received at the NZIX AGM last night, so watch this space. WAND has a long
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history of maintaining and continually improving any open-source software
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that it has released to the public [3] even when it is no longer
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specifically funded by our research income (libtrace being a prime
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example), so if OpenLI is being used then you can anticipate that WAND will
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continue to look after it.
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Finally, the core software components of OpenLI are getting close to
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complete. We have provisioning, mediation, multi-threaded and
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multi-input-interface distributable collectors. We have support for voice
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intercept (SIP + RTP + RTCP) and support for standard IP intercept (RADIUS
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+ IPv4), with IPv6 and static IP range intercepts not too far away. Most of
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the upcoming effort is focused on getting test deployments working within
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our partner networks, throwing "real" traffic at them and squashing any
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issues that come up. At this stage, it's looking like another month or two
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of work to finish the original set of requirements.
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Any other questions about the OpenLI project, feel free to get in touch
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with me directly.
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[1] S.Alcock, P. Lorier and R. Nelson, "Libtrace: a packet capture and
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analysis library", https://dl.acm.org/citation.cfm?id=2185382
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[2] Libtrace Team, "libtrace: C library for working with network packet
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traces", https://github.com/LibtraceTeam/libtrace
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[3] WAND network research group on GitHub, https://github.com/wanduow
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Thanks,
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Shane
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On Wed, Jun 27, 2018 at 11:49 PM,  wrote:
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Hi Nathan,
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We dont work with the NSA, and you dont need them to decrypt mobile data
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there are many keys used in a heirachy depending on the pairing mobile
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nodes eNB/UE/MME/HSS etc, you just need to be on the right interface to
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catch and process the exchange Control/User Plane (keys vary) is trivial
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for LI vendors like myself who carry key derivation/enc/dec logic and
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protocol sequencing to handle such an exchange. eg UE/HSS:CK,IK - a well
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known mapping is your USIM/AuC:K. As far as knocking on doors, yes
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absolutely probably me, i sell and support what I build and proud of it, but
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NSA lol, but we sell more off shore - why is that?
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My post was only intended to inform of a local option that could make a
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material difference to operators trying to meet their obligations under the
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ACT.
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As an LI provider i have met a couple of your members stung badly after
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signing offshore and we couldve helped them, also i was encouraged by the
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LEAs that speak at your conference - they obviously cant directly endorse
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but the spirit and intention of my post was not to offend just inform. TFE
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like most LI vendors do not advertise or market, and there are only a
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handfull of us OEMs that build LI solutions the rest are reseller middle
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men.
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As far as OpenLI free it is your developing, thats great but till then
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compliance is real, but we wish you all the best. 2050 is when you'l have
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enough field experience in CU/FIbre/hardware with ASN.1 + ETSI/CALEA at
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working at single thread code level. Lets say you do cobble something
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together before then - once you can multithread your kernel (tuplet flows)
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linerate 200g (64B) stream + LI let me know, sorry lets make it easy -
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start with GE @ 1.44 Mpps + LI and ASN enc over HI => garauntee you a DoS
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all day and dont even think about SLAs. But good luck with that, until then
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TICSA 2017
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The point is LI is not just about about Software. Hardware, firmware and
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real world field experience is required - how do you handle FEXT/NEXT on
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upstream active/passive TAPs can you run in rx only given the requirements
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and restrictions on spurious noise and traffic, there are many tech and
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capability requirements of the probe/mf which ETSI Parts are you going to
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do first?. HA/asymmetric network deployments (non-collo paths), how will
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you handle this situ? and TIER 4 support on commercial fabrics (Open
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generally means zip support - so i geuss nothing is realtime). If you do
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all this how will you be able to demonstrate at any point in time the two
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core aspects of TICSA 'format usability' and 'nw readiness'.
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We do LI not 'network security', ie. we build the 'device' and MF as
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descirbed in the NZ Search and Surveillance Act 2012 and NZ TICSA 2017.
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regards
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Brian Parsons BE(E&EE) MIEE | CEO TFE | LI TICSA SIGINT
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cheers
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---------------------------- Original Message ----------------------------
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Subject: Re: [nznog] Affordable TICSA LI Solution and Support
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From: "Nathan Ward" 
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Date: Wed, June 27, 2018 10:06 pm
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To: brianparsons(a)subpico.com
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Cc: nznog(a)list.waikato.ac.nz
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On 27/06/2018, at 11:45 AM, brianparsons(a)subpico.com wrote:
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We are Telecom Forensics, an OEM of LI solutions based on the Kapiti
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Coast.
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Spam spam spam
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Are you the chap from Kapiti who a few years ago was knocking about
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claiming that the NSA had given him some sort of secret codes to magically
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decrypt all mobile data, or was that someone else?
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Not too sure why you’d be pushing this here, when there’s a community
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effort to develop something open source and free.
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I’m looking forward to where the OpenLI project goes, and I’d suggest that
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anyone looking for LI tools look towards the OpenLI project, which has been
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discussed on this before, and at the NZNOG conference, and I believe will
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be discussed tomorrow at the NZIX AGM.
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ps. It’s free, but, go support it with some $, it’ll still be cheaper
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than commercial solutions.
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NZ: Highest per capita ETSI compliant LI implementors in the world.
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How long before Fincham pops up saying “oh also there’s an OpenLI
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project you should look at”? Place your bets.
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Looking forward to laughing about this one over drinks tomorrow night.
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--
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Nathan Ward
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NZNOG mailing list
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NZNOG(a)list.waikato.ac.nz
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https://list.waikato.ac.nz/mailman/listinfo/nznog
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Re: [nznog] Affordable TICSA LI Solution and Support

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