nat (inside) 1 0.0.0.0
global (outside) 1 interface
你这个是8.3以前的版本吧,
threat-detection rate scanning-threat rate-interval 600 average-rate 5 burst-rate 10
threat-detection rate scanning-threat rate-interval 3600 average-rate 4 burst-rate 8
默认不会让你scanning的那么快的。从outside来的初始会话也不会让你过的。你当然扫不到了。