Reference: Access your computer in a LAN network via SSH.

On server A (in the LAN):

  • set up frp client:

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    wget https://github.com/fatedier/frp/releases/download/v0.53.2/frp_0.53.2_linux_amd64.tar.gz
tar -zxvf frp_0.53.2_linux_amd64.tar.gz
cd frp_0.53.2_linux_amd64
nano frpc.toml

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    # frpc.toml
serverAddr = "43.139.224.203" # public IP
serverPort = 7000

[[proxies]]
name = "ssh"
type = "tcp"
localIP = "127.0.0.1"
localPort = 1220
remotePort = 6000
    • Make 6000 and 7000 accessible: sudo ufw allow 6000 andsudo ufw allow 7000 .

  • run frp client by

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    ./frpc -c ./frpc.toml

    or

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    nohup ./frpc -c ./frpc.toml &

    If any conflicts:

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    pkill -f frpc

On server B (with a public ip address):

  • set up frp server:

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    wget https://github.com/fatedier/frp/releases/download/v0.53.2/frp_0.53.2_linux_amd64.tar.gz
tar -zxvf frp_0.53.2_linux_amd64.tar.gz
cd frp_0.53.2_linux_amd64
nano frps.toml

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    # frps.toml
bindPort = 7000

  • run frp server by

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    ./frps -c ./frps.toml

    or

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    nohup ./frps -c ./frps.toml &

    if any coflicts:

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    pkill -f frps

On your computer oustide the LAN containing server B:

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ssh -oPort=6000 lasso@43.139.224.203