发明名称 |
Security apparatus and method for computers connected to telephone circuits |
摘要 |
A security apparatus for interfacing a computer system with a telephone circuit includes a modem and a controller interfacing between the telephone circuit and a modem of the computer system. The first-mentioned modem and the controller operate to answer incoming calls in a manner to disguise that the telephone circuit is connected to a computer system, thereby masking or hiding the computer system from unauthorized users such as "hackers.
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申请公布号 |
US4905281(A) |
申请公布日期 |
1990.02.27 |
申请号 |
US19880190284 |
申请日期 |
1988.05.04 |
申请人 |
HALLIBURTON COMPANY |
发明人 |
SURJAATMADJA, JIM B.;PENN, JACK C. |
分类号 |
G06F1/00;G06F21/00 |
主分类号 |
G06F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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