SSH Tunneling explained ( with local port forwarding examples ! )

FirstcreateansshsessionbyconnectingtoanSSHserver.Onceestablished,asessionisclosedautomaticallybythegarbagecollectorwhentheobjectgoesoutofscopeorwhenRquits.Youcanalsomanuallycloseitusingssh_disconnect()butthisisn,Opensaportonyourmachineandtunnelal...。參考影片的文章的如下：

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Secure Shell (SSH) Client for R

First create an ssh session by connecting to an SSH server. Once established, a session is closed automatically by the garbage collector when the object goes out of scope or when R quits. You can also manually close it using ssh_disconnect() but this is n

Package 'ssh' reference manual

Opens a port on your machine and tunnel all traffic to a custom target host via the SSH server, for example to connect with a database server behind a firewall.

GitHub - jefferyq2ssh-R

Use the tunnel by connecting to localhost:5555 from a separate process. The tunnel can only be used once and will automatically be closed when the client disconnects.

SSH Tunneling (Port Forwarding) 詳解 · John ...

Tunneling 指的是將網路上的 A、B 兩個端點用某種方式連接起來，形成一個「隧道」，讓兩端的通訊能夠穿透某些限制（例如防火牆），或是能將通訊內容加密避免洩漏。而 SSH Tunneling 就是指利用 SSH 協定來建立這個隧道，所以不但能加密你的通訊，如果中間設有防火牆擋掉某些特定 Port 的連線（例如 HTTP/HTTPS 的 80/443）而沒有擋下 SSH 的 Port 22，這個隧道便會讓防火牆認為是只是一般的 SSH 連線，進而放行，也就達到了「穿透防火牆」的效果。

ssh_tunnel: Create SSH tunnel in ssh

Opens a port on your machine and tunnel all traffic to a custom target host via the SSH server, for example to connect with a database server behind a firewall. This function blocks while the tunnel is active. Use the tunnel by connecting to localhost:555

sshtunnelr

FirstcreateansshsessionbyconnectingtoanSSHserver.Onceestablished,asessionisclosedautomaticallybythegarbagecollectorwhentheobjectgoesoutofscopeorwhenRquits.Youcanalsomanuallycloseitusingssh_disconnect()butthisisn,OpensaportonyourmachineandtunnelalltraffictoacustomtargethostviatheSSHserver,forexampletoconnectwithadatabaseserverbehindafirewall.,Usethetunnelbyconnectingtolocalhost:5555fromaseparat...