信息收集nmap-sn192.168.161.0/24nmap-sT-p-192.168.161.131-oA./portsnmap-sU--top-ports20192.168.161.131，没有明确开放的udp端口nmap-sT-sC-sV-O192.168.161.131-p22,80,111,3306-oA./details，详细扫开放的端口nmap--script=vuln-p22,80,111,3306