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<br />From: Lieutenant George Saadeh To: DCA LIsa storck <br /> <br />Dale: 711/97 "Time: 12:14:22 PM <br /> <br />Page4of9 <br /> <br />"'-' <br /> <br />...., <br /> <br /> <br />IMAGE <br /> <br />\I 1 SUA L <br />DATABASE <br />TECHNOLOGY <br /> <br />Dial -back security modem configured by Xlmage $750 <br /> <br />~: The SAPO Xlmage system is subject to being 'hacked' by outsiders by virtue of 1l1e dial.up modem that is <br />used to provide system access to X1mage support persoonel. <br /> <br />Solution: A dial.back or call-back modem is a standard modem with a measure of iIltelrlgenca attached to it. The <br />way the system would work from the SAPO system's perspective is as follows: <br /> <br />. A call is placed to the telephone number 01 the SAPO modem by another system. In most cases thls will be <br />Xlmage, but other systems could dial-up also. I <br /> <br />. With our current system, the caller would be allowed access to the Xlmage server once a successful connection is <br />eSlablished. The system is password protected and wilDE! obtaining external access is doubtful, a determined caller <br />might eventually be able to gaill entrance. <br /> <br />. With a dial.back modem I'l place, the modem at SAPO would terminate the connection batore allowing server <br />access, then dial a number for X1mage Support (or anyone else whose number is programmed in advance). <br /> <br />. Once the modem at Xlmage Support answers, a connection is made and the call proceeds normally. <br /> <br />Ref: X1mage quote dated April 15, 1997 <br /> <br />Slatement of Work: Xlmage wlll add dial back capability 10 the modem by performing the following: <br /> <br />. ReconflQure the Xlmage dial files to reflect a new modem group. <br />. EstabUsh a tie in the modem server for SAPO. <br />. Configure and test of new modem that has dial-back capabilities. <br />. Add an incoming only telephone line to the modem group. <br />. ReconflQure the Santa Ana Police SPARC serverlor re-dial. <br />. Send modem to the SA D sile. <br />. Change out the ellisting modem and test the new one. <br />. Modify support system software to reflect the diat-back requiremE!nt. <br /> <br />s~ ~~.~ L <br /> <br />Sales Manager Date c,('?,/'l7 <br /> <br />XJMAGI. COL\PORA nON <br />1050 North l'iftb Sued <br />S;JnJOSl', CA 9'51 t2 <br />iiQ8- 2RR.HROO <br />fAX 4OH.l)I):\.llJ"',O <br /> <br />EXHIBIT A <br />