| New Titan products in support of SS7/SIGTRAN/telecom core protocols [message #1775286] |
Fri, 27 October 2017 08:20  |
|
Dear all,
Although we have a heapload of protocols and test ports we used some years ago (and in some circumstances we still use) in testing telecommunication nodes that talked to each other over mainly SS7 protocols, when we started to publish Titan and related products we gave priority to IP based stuff we considered to be more attractive for potential users.And I still think we were right to do this; traditional telecom protocols are less accessible, known and popular then the IP family of protocols.
However, for sake of completeness, I have published a few basic pieces, mainly building on top of SCTP (which replaces the lower layers of the traditional SS7 stack with their corresponding IP counterpart); as it happens, Harald Welte, founder of Osomocom run into Titan ( see http://laforge.gnumonks.org/blog/20170212-telecom-testing-ttcn/ )
and as far as I can tell started to use it enthusiastcally to test their products (http://git.osmocom.org/osmo-ttcn3-hacks/, http://laforge.gnumonks.org/blog/20170820-osmocom-testsuites/).
Osmocom stands for open mobile communication (see http://osmocom.org/) and they are writing open source software to implement 2G(GSM), DECT etc. nodes, their best known product being OpenBSC; there's a commercial branch of the enterprise, Sysmocom (https://www.sysmocom.de) which offers products and services (such as installation, support etc.) on a commercial basis.
Being encouraged by this I have recently added a group of protocol modules/test ports/protocol emulations that might come handy to someone willing to test such protocols or nodes.
Although not much new development happens in this area, there's still a huge installed base out there ; vulnerabilities of SS7 protocols were spotlighted as soon as they were exposed to an open network.( In fairness, let me add that the design assumption at the basis of these protocols at the time of their conception was that these protocols will operate in a closed, physically protected network, so sometimes they lack even the most basic security features). These tools we published may come also handy to security researchers working with
hardening these protocols.
SIGTRAN stack
Some of the products in the stack kave been published earlier, see
New products published in the Titan toolbox
https://www.eclipse.org/forums/index.php/t/1083726/
With X I have marked the layers that are covered by our published products. Coverage might mean only a Protocol Module
(static declarations) or a Protocol Emulation (Dynamic behaviour implemented as well)
+----------------------------------------------------------+
| |
| Applications |
| |
+--------------+----------------+----------+--------+------+
| |TCAP| | | | | |
| I |(RO | I | TCAP | DSS1 |DPNSS L3| V5.2 |
| S | SE)| S | (ROSE) (X) | (X) | | |
| U +----+ U | | | | |
| P |SCCP| P +-------------------------------------------+
|(X) |(X) | (X)| | | | |
| | | | SCCP(X) | | | |
+----+--------------------------+ | | |
| MTP3 | | | | | |
| (X) | | SUA | IUA | DUA | V5UA |
+---------+ M3UA(X) | (X) | (X) | (X) | |
| M2UA(X) | | | | | |
| M2PA(X) | | | | | |
| | | | | | |
+---------+----------+----------+----------+--------+------+
| |
| SCTP (X) |
| |
+----------------------------------------------------------+
| |
| IP (X) |
| |
+----------------------------------------------------------+
New products (published since the last Titan release);
M3UA Protocol Emulation
git://git.eclipse.org/gitroot/titan/titan.ProtocolEmulations.M3UA.git
SCCP Protocol Emulation
git://git.eclipse.org/gitroot/titan/titan.ProtocolEmulations.SCCP.git
SUA Protocol Emulation
git://git.eclipse.org/gitroot/titan/titan.ProtocolEmulations.SUA.git
MTP3/MTP3b/M3UA test port MTP3asp
git://git.eclipse.org/gitroot/titan/titan.TestPorts.MTP3.git
M2UA Protocol module
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.M2UA.git
ISUP Protocol module
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.ISUP_Q.762.git
Other telecom protocols
BSSAP+ Protocol module ( SGSN-MSC/HLR, GS Interface)
+-------------------+ +-------------------+
| | | |
| BSSAP+ +---------------+ BSSAP+ |
| | | |
+-------------------+ +-------------------+
| | | |
| SCCP +---------------+ SCCP |
| | | |
+-------------------+ +-------------------+
| | | |
| +---------------+ |
| MTP3 | | MTP3 |
| | | |
+-------------------+ +-------------------+
| | | |
| L2 +---------------+ L2 |
| | | |
+-------------------+ +-------------------+
| L1 +---------------+ L1 |
| | | |
+-------------------+ Gs +-------------------+
SGSN MSC/VLR
Fig 1 BSSAPP
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.BSSAPP_v7.3.0.git
SNDCP/LLC/BSSGP/NS Protocol modules ( BSS-SGSN Gb interface)
Fig 2 BSS-SGSN
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.SNDCP_v7.0.0.git
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.LLC_v7.1.0.git
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.BSSGP_v13.0.0.git
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.NS_v7.3.0.git
BSSMAP A if BSS-MSC
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.BSSMAP_v11.2.0.git
Fig3
GTPv1 Gn/Gp
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.GTP_v13.5.0.git
+-------------------+ +-------------------+
| | | |
| GTP +---------------+ GTP |
| | | |
+-------------------+ +-------------------+
| | | |
| UDP +---------------+ UDP |
| | | |
+-------------------+ +-------------------+
| | | |
| +---------------+ |
| IP | | IP |
| | | |
+-------------------+ +-------------------+
| | | |
| L2 +---------------+ L2 |
| | | |
+-------------------+ +-------------------+
| +---------------+ |
| L1 | Gn | L1 |
+-------------------+ +-------------------+
SGSN GGSN
Fig 4
GTPv2 S3/S4/S16 interfaces
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.GTPv2_v13.7.0.git
+-------------------+ +-------------------+
| | | |
| GTPv2-C +---------------+ GTPv2-C |
| | | |
+-------------------+ +-------------------+
| | | |
| UDP +---------------+ UDP |
| | | |
+-------------------+ +-------------------+
| | | |
| +---------------+ |
| IPv4/v6 | | IPv4/v6 |
| | | |
+-------------------+ +-------------------+
| | | |
| L2 +---------------+ L2 |
| | | |
+-------------------+ +-------------------+
| +---------------+ |
| L1 | | L1 |
+-------------------+ +-------------------+
GTPv2 node GTPv2 node
Fig 5
Mobile L3 (CM/MM/RR)
git://git.eclipse.org/gitroot/titan/titan.ProtocolModules.MobileL3_v13.4.0.git
Fig6
Please read the attached documentation to see which dependencies are required for each product and if I missed something please let me know;
also bear in mind that although these pieces of code have once been used in production environment they may have not been maintained for quite a while; If you run into any problems when using them, don't be shy and let me know. Also, I have only published the latest version available; based on that (and on the right version of the standard of course) any older or newer version can be assembled.
Best regards
Elemer
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[Updated on: Fri, 27 October 2017 08:22] Report message to a moderator |
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