Electrical computers and digital processing systems: multicomput – Computer-to-computer session/connection establishing
Reexamination Certificate
2008-05-27
2008-05-27
Caldwell, Andrew (Department: 2141)
Electrical computers and digital processing systems: multicomput
Computer-to-computer session/connection establishing
Reexamination Certificate
active
07380010
ABSTRACT:
A Denial of Service (DoS) mitigation scheme increases the ability of a call processing server to fend off DoS attacks. The DoS mitigation scheme identifies a probability for dropping or denying a call request according to the current load on the call processing server. The probability is then weighted according to certain characteristics of the call request. For example, a call request from a previously authenticated source may be given a different weight than a request from an unauthenticated source. The weighted probability is then compared with a randomly generated number and the call request accepted or rejected according to the comparison.
REFERENCES:
patent: 2003/0152096 (2003-08-01), Chapman
Reynolds et al., STEM: Secure Telephony Enabled Middlebox, IEEE Communications Magazine, Oct. 2002.
Caldwell Andrew
Cisco Technology Inc.
Ford Grant
Stolowitz Ford Cowger LLP
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