kali linux 学习 NETCAT NC的使用

常用的使用命令

惯例先查看帮助

root@kali:~# nc -h
[v1.10-41.1]
connect to somewhere:    nc [-options] hostname port[s] [ports] ...
listen for inbound:    nc -l -p port [-options] [hostname] [port]
options:
    -c shell commands    as `-e'; use /bin/sh to exec [dangerous!!]
    -e filename        program to exec after connect [dangerous!!]
    -b            allow broadcasts
    -g gateway        source-routing hop point[s], up to 8
    -G num            source-routing pointer: 4, 8, 12, ...
    -h            this cruft
    -i secs            delay interval for lines sent, ports scanned
        -k                      set keepalive option on socket
    -l            listen mode, for inbound connects
    -n            numeric-only IP addresses, no DNS
    -o file            hex dump of traffic
    -p port            local port number
    -r            randomize local and remote ports
    -q secs            quit after EOF on stdin and delay of secs
    -s addr            local source address
    -T tos            set Type Of Service
    -t            answer TELNET negotiation
    -u            UDP mode
    -v            verbose [use twice to be more verbose]
    -w secs            timeout for connects and final net reads
    -C            Send CRLF as line-ending
    -z            zero-I/O mode [used for scanning]
port numbers can be individual or ranges: lo-hi [inclusive];
hyphens in port names must be backslash escaped (e.g. 'ftp\-data').

用来查看端口的状态是否打开并且显示信息

root@kali:~# nc -nv 54.64.105.68 80
(UNKNOWN) [54.64.105.68] 80 (http) open