tree 0fc0757956c1f7dc0963c90e6f367d70914709f6
parent 2cafc4b30910f244e610e4cf75f72ba360df6ace
author Harald Welte <laforge@gnumonks.org> 1293201548 +0100
committer Harald Welte <laforge@gnumonks.org> 1293201746 +0100

SGSN / GMM: Only allow non-roaming IMSIs

As we do not yet use the HLR from the SGSN, we allow all MS to
attach to our GPRS network.  However, if this is running in a public
environment, it could cause service interruption to users of commercial
GPRS networks.

Thus, we now check if the first 5 digits of the IMSI match the MCC/MNC
of the cell that they want to register to.  Thus, any subscribers with
SIM cards from real operators will no longer be accepted.