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移动宽带没有公网IP, 除了采用ssh正向代理可以经vps访问家里机器外, 也可以可用frp内网穿透实现.

# server side
wget https://github.com/fatedier/frp/releases/download/v0.27.0/frp_0.27.0_linux_amd64.tar.gz
sudo cp frps /usr/bin/ && sudo cp frps.ini /etc/frp/
sudo bash -c 'cat > /etc/frp/frps.ini ' << EOF
root@OneCloud:~# cat /etc/frp/frps.ini 
[common]
max_pool_count = 5
bind_port = 7000
kcp_bind_port = 7001
privilege_token = 'password'
tcp_mux = true
dashboard_port = 7500
dashboard_user = admin
dashboard_pwd = admin
EOF
sudo /usr/bin/frps -c /etc/frps.ini
sudo cp systemd/frps.service /lib/systemd/system/
sudo systemctl enable frps.service
sudo systemctl restart frps.service

#cliet side
wget https://github.com/fatedier/frp/releases/download/v0.27.0/frp_0.27.0_linux_amd64.tar.gz
sudo cp frpc /usr/bin/ && sudo cp frpc.ini /etc/frp/
sudo bash -c 'cat > /etc/frp/frpc.ini ' << EOF
[common]
server_addr = quqi99.publicvm.com
server_port = 7000
privilege_token = 'password'
log_file = /var/log/frpc.log
use_encryption = true
use_compression = true

[ssh]
type = tcp
local_ip = 127.0.0.1
local_port = 22
remote_port = 2223

[socks5]
type = tcp
remote_port =7071
plugin = socks5
EOF
sudo /usr/bin/frpc -c /etc/frpc.ini
sudo cp systemd/frpc.service /lib/systemd/system/
sudo systemctl enable frpc.service
sudo systemctl restart frpc.service

或是openwrt则：
root@openwrt:~# cat /etc/init.d/ss 
#!/bin/sh /etc/rc.common
#ln -s /etc/init.d/ss /etc/rc.d/S99ss
START=99

start() {
  /usr/bin/ssclient &
}

stop() {
  /usr/bin/killall ssclient
  #/bin/ps |grep ssclient |grep -v grep |awk '{print $1}' |xargs kill -9
}

ssh hua@vps -p 2222 -v
dig @vps -p 5353 google.com
#env ALL_PROXY=socks5h://quqi:password@vps:7070 curl https://www.google.com --verbose

注： 如果安装frps的机器也有向外提供服务的需求，那继续在frps所在机器运行frpc即可。

ssh root@127.0.0.1 -p2223  #on proxy machine                                    
ssh -L 80:127.0.0.1:80 root@127.0.0.1 -p2223 -g -N -C -o TCPKeepAlive=yes  #on proxy machine


# reference
# https://diannaobos.com/post/612.html
# https://www.cnblogs.com/sanduzxcvbnm/p/8508741.html