网络安全笔记

nslookup 

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  $nslookup 12306.cn
  Server:         114.114.114.114
  Address:        114.114.114.114#53

  Non-authoritative answer:
  Name:   12306.cn
  Address: 111.132.65.15
  Name:   12306.cn
  Address: 2409:8c02:21c:60::f

"Server"对应DNS，可以在 /etc/resolv.conf中看到，"#53"对应DNS用到的端口为53，"非权威性的答案"对应 Non-authoritative answer，"Name"对应的是别名

命令行查看ip 

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  curl ipinfo.io

除了查看ip，还显示经纬度