130 lines
5.3 KiB
Plaintext
130 lines
5.3 KiB
Plaintext
== Managing Subscribers
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Subscribers are kept in a local SQLite database file and can be managed via VTY
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and CTRL interfaces.
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This section provides some examples; also refer to the OsmoHLR VTY reference
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manual <<vty-ref-osmohlr>> as well as the Control interface described in
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<<hlr-ctrl>>.
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=== Example: Add/Update/Delete Subscriber via VTY
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The following telnet VTY session adds a subscriber complete with GSM (2G) and
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UMTS (3G and 2G) authentication tokens, and finally removes the subscriber
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again; it assumes that osmo-hlr is running and listening for telnet VTY
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connections on localhost:
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----
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$ telnet localhost 4258
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include::../example_subscriber_add_update_delete.vty[]
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----
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[[subscriber-params]]
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=== Subscriber Parameters
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The following parameters are managed for each subscriber of the HLR, modelled
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roughly after 3GPP TS 23.008, version 13.3.0; note that not all of these
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parameters are necessarily in active use.
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The `aud3g` table also applies to 2G networks: it provides UMTS AKA tokens for
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Milenage authentication, which is available both on 3G and 2G networks. On 2G,
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when both MS and network are R99 capable (like OsmoMSC and OsmoSGSN are), the
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full UMTS AKA with Milenage keys from `aud_3g`, using AUTN and extended RES
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tokens, is available. With pre-R99 MS or network configurations, the GSM AKA
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compatible variant of Milenage, still using the Milenage keys from `aud_3g` but
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transceiving only RAND and SRES, may be applicable. (See 3GPP TS 33.102, chapter
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6.8.1, Authentication and key agreement of UMTS subscribers.)
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.OsmoHLR's subscriber parameters
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[options="header",width="100%",cols="20%,20%,60%"]
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|===
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|Name|Example|Description
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|imsi|901700000014701|identity of the SIM/USIM, 3GPP TS 23.008 chapter 2.1.1.1
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|msisdn|2342123|number to dial to reach this subscriber (multiple MSISDNs can be stored per subscriber), 3GPP TS 23.008 chapter 2.1.2
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|imeisv|4234234234234275|identity of the mobile device and software version, 3GPP TS 23.008 chapter 2.2.3
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|aud2g.algo|comp128v3|Authentication algorithm ID for GSM AKA, corresponds to enum osmo_auth_algo
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|aud2g.ki||Subscriber's secret key (128bit)
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|aud3g.algo|milenage|Authentication algorithm ID for UMTS AKA (applies to both 3G and 2G networks), corresponds to enum osmo_auth_algo
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|aud3g.k|(32 hexadecimal digits)|Subscriber's secret key (128bit)
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|aud3g.op|(32 hexadecimal digits)|Operator's secret key (128bit)
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|aud3g.opc|(32 hexadecimal digits)|Secret key derived from OP and K (128bit), alternative to using OP which does not disclose OP to subscribers
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|aud3g.sqn|123|Sequence number of last used key (64bit unsigned)
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|aud3g.ind_bitlen|5|Nr of index bits at lower SQN end
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|apn||
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|vlr_number||3GPP TS 23.008 chapter 2.4.5
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|hlr_number||3GPP TS 23.008 chapter 2.4.6
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|sgsn_number||3GPP TS 23.008 chapter 2.4.8.1
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|sgsn_address||3GPP TS 23.008 chapter 2.13.10
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|ggsn_number||3GPP TS 23.008 chapter 2.4.8.2
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|gmlc_number||3GPP TS 23.008 chapter 2.4.9.2
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|smsc_number||3GPP TS 23.008 chapter 2.4.23
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|periodic_lu_tmr||3GPP TS 23.008 chapter 2.4.24
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|periodic_rau_tau_tmr||3GPP TS 23.008 chapter 2.13.115
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|nam_cs|1|Enable/disable voice access (3GPP TS 23.008 chapter 2.1.1.2: network access mode)
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|nam_ps|0|Enable/disable data access (3GPP TS 23.008 chapter 2.1.1.2: network access mode)
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|lmsi||3GPP TS 23.008 chapter 2.1.8
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|ms_purged_cs|0|3GPP TS 23.008 chapter 2.7.5
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|ms_purged_ps|1|3GPP TS 23.008 chapter 2.7.6
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|===
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=== Configuring the Subscribers Create on Demand Feature
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Usually a HLR will only allow mobile equipment (ME) on the network, if the HLR
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has a subscriber entry with the ME's IMSI. But OsmoHLR can also be configured to
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automatically create new entries for new IMSIs, with the
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`subscriber-create-on-demand` VTY option. The obvious use case is creating the
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new subscriber entry and then allowing the ME to use both the CS
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(Circuit Switched) and PS (Packet Switched) NAM (Network Access Mode).
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.osmo-hlr.cfg
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----
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hlr
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subscriber-create-on-demand 5 cs+ps
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----
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On the other hand, operators might only want to give network access to IMSIs, of
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which they know the owner. In order to do that, one can set the default NAM to
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`none` and manually approve new subscribers by changing the NAM (e.g. over the
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VTY, see the example below).
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Oftentimes it is hard to know, which IMSI belongs to which ME, but the IMEI is
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readily available. If you configure your MSC to send IMEI checking requests to
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the HLR, before sending location update requests, the subscribers created on
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demand can also have the IMEI stored in the HLR database. With OsmoMSC, this
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is done by writing `check-imei-rqd early` in the `msc` section of osmo-msc.cfg.
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Then enable storing the IMEI when receiving check IMEI requests with
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`store-imei` in the OsmoHLR configuration.
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.osmo-msc.cfg
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----
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msc
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check-imei-rqd early
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----
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.osmo-hlr.cfg
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----
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hlr
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subscriber-create-on-demand 5 none
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store-imei
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----
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.Example: Enabling CS and PS NAM via VTY for a known IMEI
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----
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OsmoHLR> enable
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OsmoHLR# subscriber imei 35761300444848 show
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ID: 1
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IMSI: 123456789023000
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MSISDN: 58192 <1>
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IMEI: 35761300444848
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CS disabled <2>
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PS disabled <2>
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OsmoHLR# subscriber imei 35761300444848 update network-access-mode cs+ps
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OsmoHLR# subscriber imei 35761300444848 show
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ID: 1
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IMSI: 123456789023000
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MSISDN: 58192
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IMEI: 35761300444848
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----
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<1> Randomly generated 5 digit MSISDN
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<2> Disabled CS and PS NAM prevent the subscriber from accessing the network
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