Abstract: Attack resistance test(ART) is an important security evaluation method and evaluating the system's attack resistance ability becomes a new domain of ARh. A new evaluation method of DoS attack resistance ability based on set pair was presented. The process of systematic analysis DoS attacks resistance ability was broadly put forward. Identity- discrepancy-contrary connection numbers were confirmed by fuzzy method. Using rough set theory, the nonlinear combi- nation weight of evaluation indices was established. A simulation example shows that the approach is brief and effective.

Key words: Security test, Attack resistance ability, Set pair, Connection number, Denial of service attack