Re: [nznog] Affordable TICSA LI Solution and Support

Hi Brian, all, As the primary developer on the OpenLI project, I've been asked to address some points that you've raised and correct any misconceptions people might have about OpenLI as a result of this thread. For anyone concerned about a possible lack of experience in writing packet capture software, most of my 14 years working here at the WAND network research group has been dedicated to both writing and running software for high speed passive capture and analysis projects. I am one of the primary authors and maintainers of libtrace [1] [2], which is widely used both in academia and industry (as well as the OpenLI software itself). Libtrace supports a variety of capture methods and hardware, including DAG and DPDK, and has a parallel API for writing multi-threaded packet capture applications, so I have a reasonable understanding of what is required of both hardware and software to do high-rate packet capture and encoding. OpenLI is not offering a "complete" solution to your TICSA problems. We provide software that can capture packets and convert them into ETSI records, wrapped in a centralised provisioning system for managing intercepts, along with a mediation function that will push the resulting records to the appropriate agency. Integration of OpenLI into your network is a matter for the operator; however, we have been working closely with the organisations that responded to our initial requests for funding to get their deployments up and running. Longer term, we are starting to have conversations about what support models we want to provide in the future, especially after the feedback I received at the NZIX AGM last night, so watch this space. WAND has a long history of maintaining and continually improving any open-source software that it has released to the public [3] even when it is no longer specifically funded by our research income (libtrace being a prime example), so if OpenLI is being used then you can anticipate that WAND will continue to look after it. Finally, the core software components of OpenLI are getting close to complete. We have provisioning, mediation, multi-threaded and multi-input-interface distributable collectors. We have support for voice intercept (SIP + RTP + RTCP) and support for standard IP intercept (RADIUS + IPv4), with IPv6 and static IP range intercepts not too far away. Most of the upcoming effort is focused on getting test deployments working within our partner networks, throwing "real" traffic at them and squashing any issues that come up. At this stage, it's looking like another month or two of work to finish the original set of requirements. Any other questions about the OpenLI project, feel free to get in touch with me directly. [1] S.Alcock, P. Lorier and R. Nelson, "Libtrace: a packet capture and analysis library", https://dl.acm.org/citation.cfm?id=2185382 [2] Libtrace Team, "libtrace: C library for working with network packet traces", https://github.com/LibtraceTeam/libtrace [3] WAND network research group on GitHub, https://github.com/wanduow Thanks, Shane On Wed, Jun 27, 2018 at 11:49 PM, wrote:

Hi Nathan,

We dont work with the NSA, and you dont need them to decrypt mobile data there are many keys used in a heirachy depending on the pairing mobile nodes eNB/UE/MME/HSS etc, you just need to be on the right interface to catch and process the exchange Control/User Plane (keys vary) is trivial for LI vendors like myself who carry key derivation/enc/dec logic and protocol sequencing to handle such an exchange. eg UE/HSS:CK,IK - a well known mapping is your USIM/AuC:K. As far as knocking on doors, yes absolutely probably me, i sell and support what I build and proud of it, but NSA lol, but we sell more off shore - why is that?

My post was only intended to inform of a local option that could make a material difference to operators trying to meet their obligations under the ACT.

As an LI provider i have met a couple of your members stung badly after signing offshore and we couldve helped them, also i was encouraged by the LEAs that speak at your conference - they obviously cant directly endorse but the spirit and intention of my post was not to offend just inform. TFE like most LI vendors do not advertise or market, and there are only a handfull of us OEMs that build LI solutions the rest are reseller middle men.

As far as OpenLI free it is your developing, thats great but till then compliance is real, but we wish you all the best. 2050 is when you'l have enough field experience in CU/FIbre/hardware with ASN.1 + ETSI/CALEA at working at single thread code level. Lets say you do cobble something together before then - once you can multithread your kernel (tuplet flows) linerate 200g (64B) stream + LI let me know, sorry lets make it easy - start with GE @ 1.44 Mpps + LI and ASN enc over HI => garauntee you a DoS all day and dont even think about SLAs. But good luck with that, until then TICSA 2017

The point is LI is not just about about Software. Hardware, firmware and real world field experience is required - how do you handle FEXT/NEXT on upstream active/passive TAPs can you run in rx only given the requirements and restrictions on spurious noise and traffic, there are many tech and capability requirements of the probe/mf which ETSI Parts are you going to do first?. HA/asymmetric network deployments (non-collo paths), how will you handle this situ? and TIER 4 support on commercial fabrics (Open generally means zip support - so i geuss nothing is realtime). If you do all this how will you be able to demonstrate at any point in time the two core aspects of TICSA 'format usability' and 'nw readiness'.

We do LI not 'network security', ie. we build the 'device' and MF as descirbed in the NZ Search and Surveillance Act 2012 and NZ TICSA 2017.

regards

Brian Parsons BE(E&EE) MIEE | CEO TFE | LI TICSA SIGINT

cheers

---------------------------- Original Message ---------------------------- Subject: Re: [nznog] Affordable TICSA LI Solution and Support From: "Nathan Ward" Date: Wed, June 27, 2018 10:06 pm To: brianparsons(a)subpico.com Cc: nznog(a)list.waikato.ac.nz --------------------------------------------------------------------------

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On 27/06/2018, at 11:45 AM, brianparsons(a)subpico.com wrote:

We are Telecom Forensics, an OEM of LI solutions based on the Kapiti

Coast.

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Spam spam spam

Are you the chap from Kapiti who a few years ago was knocking about claiming that the NSA had given him some sort of secret codes to magically decrypt all mobile data, or was that someone else?

Not too sure why you’d be pushing this here, when there’s a community effort to develop something open source and free.

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ps. It’s free, but, go support it with some $, it’ll still be cheaper

I’m looking forward to where the OpenLI project goes, and I’d suggest that anyone looking for LI tools look towards the OpenLI project, which has been discussed on this before, and at the NZNOG conference, and I believe will be discussed tomorrow at the NZIX AGM. than commercial solutions.

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NZ: Highest per capita ETSI compliant LI implementors in the world.

How long before Fincham pops up saying “oh also there’s an OpenLI

project you should look at”? Place your bets.

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Looking forward to laughing about this one over drinks tomorrow night.

-- Nathan Ward

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