Which parameters are valid SCREEN options for combating oper
题目
单选题
Which parameters are valid SCREEN options for combating operating system probes?（）
A
syn-fin, syn-flood, and tcp-no-frag
B
syn-fin, port-scan, and tcp-no-flag
C
syn-fin, fin-no-ack, and tcp-no-frag
D
syn-fin, syn-ack-ack-proxy, and tcp-no-frag
