网站接口
# 国内某网站的接口，只返回IP
curl whatismyip.akamai.com
# 更多用法访问ifconfig.co
wget -qO - ifconfig.co
curl icanhazip.com
dig +short myip.opendns.com @resolver1.opendns.com
curl ident.me
curl v4.ident.me
curl v6.ident.me
#返回IP和地区
curl cip.cc
#需要翻x，只返回IP
curl ip.appspot.com
# 多网站获取ip接口shell脚本
wget https://raw.githubusercontent.com/rsp/scripts/master/externalip-benchmark
chmod a+x externalip-benchmark
./externalip-benchmark
nmap工具
nping是nmap的子命令、子工具
查询自己公网IP
nping --echo-client "public" echo.nmap.org --udp
SENT (1.9332s) UDP 192.168.1.106:53 > 45.33.32.156:40125 ttl=64 id=38352 iplen=28
CAPT (2.0617s) UDP 221.218.209.62:53 > 45.33.32.156:40125 ttl=50 id=38352 iplen=28
RCVD (2.1899s) ICMP [45.33.32.156 > 192.168.1.106 Port unreachable (type=3/code=3) ] IP [ttl=49 id=542 iplen=56 ]
SENT (2.9411s) UDP 192.168.1.106:53 > 45.33.32.156:40125 ttl=64 id=38352 iplen=28
CAPT (3.0566s) UDP 221.218.209.62:53 > 45.33.32.156:40125 ttl=50 id=38352 iplen=28
RCVD (3.1620s) ICMP [45.33.32.156 > 192.168.1.106 Port unreachable (type=3/code=3) ] IP [ttl=49 id=636 iplen=56 ]
SENT (3.9442s) UDP 192.168.1.106:53 > 45.33.32.156:40125 ttl=64 id=38352 iplen=28
CAPT (4.0713s) UDP 221.218.209.62:53 > 45.33.32.156:40125 ttl=50 id=38352 iplen=28
RCVD (4.1685s) ICMP [45.33.32.156 > 192.168.1.106 Port unreachable (type=3/code=3) ] IP [ttl=49 id=856 iplen=56 ]
SENT (4.9476s) UDP 192.168.1.106:53 > 45.33.32.156:40125 ttl=64 id=38352 iplen=28
221.218.209.62 就是我们的公网IP