RFC 2196:Site Security Handbook
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calling line identification


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... If Calling Line Identification is available, take advantage of it by recording the calling number for each login attempt. Be sensitive to ...
... login attempt. Be sensitive to the privacy issues raised by Calling Line Identification. Also be aware that Calling Line Identification is not to be trusted (since ...
... privacy issues raised by Calling Line Identification. Also be aware that Calling Line Identification is not to be trusted (since intruders have been known to break into phone switches and forward ...



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