GPRS vulnerabilities

From: Viraf Hathiram (Viraf.Hathiramat_private)
Date: Tue Jan 29 2002 - 21:40:50 PST

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    G'day folks
    
    We've talked about the air interface and the sim cards of GSM in an earlier
    discussion.  I'm just getting acquainted with GPRS and would like to know if
    there are documented cases of the GPRS backbone (GGSN, DNS, etc.) being
    attacked from a mobile node.
    
    For those not familiar with GPRS, the network looks like this:
    
    laptop--mobile phone--GSM network--SGSN--GGSN--Internet and several
    Intranets
    
    The GGSN is effectively a router and is the first IP device encountered by
    the laptop.  It could have firewall and DHCP functions.  It connects to a
    DNS, charging gateway, NMS, etc.
    
    Regards
    Viraf
    
    Viraf K. Hathiram
    Information Security Specialist
    'yes' Optus
    Tel:  (+61-2) 9342-7002 (forwards to mobile)
    Fax:  (+61-2) 9342-8546
    Viraf.Hathiramat_private
    
    
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