Recommended Practice for Securing Control System Modems

Davidson, James R. ; Wright, Jason L.

Idaho National Laboratory

关键词: Telephones Control System, Dhs, Modem, Security;    24 Power Transmission And Distribution;    Control System, Dhs, Modem, Security;    Internet;    Security;   

DOI  :  10.2172/924510
RP-ID  :  INL/EXT-07-12635
RP-ID  :  DE-AC07-99ID-13727
RP-ID  :  924510

美国|英语

来源: UNT Digital Library

【 摘 要 】

This paper addresses an often overlooked “backdoor” into critical infrastructure control systems created by modem connections. A modem’s connection to the public telephone system is similar to a corporate network connection to the Internet. By tracing typical attack paths into the system, this paper provides the reader with an analysis of the problem and then guides the reader through methods to evaluate existing modem security. Following the analysis, a series of methods for securing modems is provided. These methods are correlated to well-known networking security methods.