Netcat命令介绍及实践
1.Windows系统nc工具使用方法
[v1.10 NT]
connect to somewhere: nc [-options] hostname port[s] [ports] ...
listen for inbound: nc -l -p port [options] [hostname] [port]
options:
-d detach from console, stealth mode
-e prog inbound program to exec [dangerous!!]
-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
-l listen mode, for inbound connects
-L listen harder, re-listen on socket close
-n numeric-only IP addresses, no DNS
-o file hex dump of traffic
-p port local port number
-r randomize local and remote ports
-s addr local source address
-t answer TELNET negotiation
-u UDP mode
-v verbose [use twice to be more verbose]
-w secs timeout for connects and final net reads
-z zero-I/O mode [used for scanning]
port numbers can be individual or ranges: m-n [inclusive]
2.Windows版nc工具（免安装）
下载连接：https://download.csdn.net/download/Whenbeen/12393406
3.Linux系统nc命令使用方法
Ncat 7.50 ( https://nmap.org/ncat )
Usage: ncat [options] [hostname] [port]
Options taking a time assume seconds. Append 'ms' for milliseconds,
's' for seconds, 'm' for minutes, or 'h' for hours (e.g. 500ms).
-4 Use IPv4 only
-6 Use IPv6 only
-U, --unixsock Use Unix domain sockets only
-C, --crlf Use CRLF for EOL sequence
-c, --sh-exec
-e, --exec
--lua-exec
-g hop1[,hop2,...] Loose source routing hop points (8 max)
-G
-m, --max-conns
-h, --help Display this help screen
-d, --delay
4.实践：Windows系统nc工具配合Linux系统nc命令使用
4.1 查看Linux系统IP地址
4.2 Linux系统通过nc命令监听7777端口
4.3 查看Windows系统IP地址
4.4 Windows系统通过nc.exe与Linux系统ip地址建立TCP连接
4.5三次握手抓包信息
4.6 发送数据检查通信状态
Windows发送：
Linux接收:
Linux系统收到Windows系统发送的消息，能够正常通信。
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