下面一一介紹:html
用法: telnet ip port (1) telnet鏈接不存在的端口 telnet 1.1.1.1 8 Trying 1.1.1.1... telnet: connect to address 1.1.1.1: Connection timed out (2) telnet 連接存在端口 telnet 1.1.1.1 8000 Trying 1.1.1.1... Connected to 1.1.1.1. Escape character is '^]'. Connection closed by foreign host.
用法: wget ip:port (1) 不存在端口 wget 1.1.1.1:8 --2017-01-24 11:38:34-- http://1.1.1.1:8/ Connecting to 1.1.1.1:8... failed: Connection timed out. Retrying. (2) 存在端口 wget 1.1.1.1:8000 --2017-01-24 11:39:03-- http://1.1.1.1:8000/ Connecting to 1.1.1.1:8000... connected. HTTP request sent, awaiting response... 200 OK
用法: ssh -v -p port username@ip -v 調試模式(會打印日誌). -p 指定端口 這裏沒有給出測試,留給讀者本身測試
用法: curl ip:port (1) 不存在端口 獲取不到結果 (2) 存在端口 curl 1.1.1.1:8000 <!DOCTYPE html> <html> <head>xxx</head> <body> ...... </body> </html>