Research Article
A Novel Protective Framework for Defeating HTTP-Based Denial of Service and Distributed Denial of Service Attacks
Algorithm 7
High rate attack entropy algorithm.
| calculate avg_c = (cold_uri1_clicks + cold_uri2_clicks + ⋯ + cold_uriN_clicks)/N | | IF (avg_c >= 10000) | | calculate entropy H = −H(cold_uri1) + −H(cold_uri2) + ⋯ + −H(cold_uriN) | | IF (H <= −1.36 OR H >= +1.36) | | return HTTP_FORBIDDEN | | Blacklist_Table(remote_ip) | | EdgeRouter_Ban(remote_ip) | | ENDIF | | ENDIF |
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