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guide_tunnel 2013-05-14 guide_tunnel 2026-06-02 (current)
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-====== Connect to FTP/SFTP Server Which Can Be Accessed via Another Server Only ======+====== Connect to FTP/SFTP server which can be accessed via another server only ======
//This guide contains simplified description of connecting to FTP or SFTP server via tunnel with WinSCP. You may want to see [[tunneling|documentation of the tunneling functionality]] instead//. //This guide contains simplified description of connecting to FTP or SFTP server via tunnel with WinSCP. You may want to see [[tunneling|documentation of the tunneling functionality]] instead//.
 +
 +===== Before Starting =====
Before starting you should: Before starting you should:
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One possible approach is to setup SSH [[tunneling|tunnel]] and connect through the tunnel. One possible approach is to setup SSH [[tunneling|tunnel]] and connect through the tunnel.
-For simple cases, you can setup tunnel directly in WinSCP.·For more complex cases (non-default SSH settings, multiple hops, FTP protocol, etc.) you need to setup tunnel using external tool. Example of such tool is [[&url(putty)|PuTTY SSH client]]. For more information see [[http://the.earth.li/~sgtatham/putty/0.60/htmldoc/Chapter3.html#using-port-forwarding|PuTTY documentation on port forwarding]].+For simple cases, you can [[ui_login_tunnel|setup tunnel directly in WinSCP]]. 
 + 
 +For more complex cases (non-default %%SSH%% settings, multiple hops, FTP protocol, etc.) you need to setup tunnel using external tool. Example of such tool is [[&url(putty)|PuTTY SSH client]] or [[https://the.earth.li/~sgtatham/putty/latest/htmldoc/Chapter7.html|Plink]]. For more information see [[&url(puttydoc)/Chapter3.html#using-port-forwarding|PuTTY documentation on port forwarding]].
In the text, //Server B// stays for the target server and //Server A// stays for the server thru which you need to connect. In the text, //Server B// stays for the target server and //Server A// stays for the server thru which you need to connect.
-===== Setting up tunnel in WinSCP ===== +===== [[tunnel_winscp]] Setting up tunnel in WinSCP ===== 
-See //[[ui_login_tunnel|Tunnel tab]]// on Login dialog. +See //[[ui_login_tunnel|Tunnel page]]// on Advanced Site Settings dialog.
-===== Setting up tunnel using PuTTY for SFTP/SCP session =====+===== [[tunnel_two]] Setting up two hop tunnel using Plink ===== 
 + 
 +You can use Plink to implement the first hop by using the following [[ui_login_proxy#command|//Local proxy command//]]:((For details, see [[https://superuser.com/q/477312/213663#1489111|Using WinSCP with SFTP server and two SSH tunnel hops]].)) 
 + 
 +<code> 
 +plink.exe %user@%proxyhost -nc %host:%port 
 +</code> 
 + 
 +For the second hop, use //[[ui_login_tunnel|Tunnel page]]// as above. 
 + 
 +===== [[tunnel_putty]] Setting up tunnel using PuTTY for SFTP/SCP session =====
Note that this is for illustration only, such a simple tunnel can be setup directly in WinSCP. Note that this is for illustration only, such a simple tunnel can be setup directly in WinSCP.
==== Setting up the tunnel ==== ==== Setting up the tunnel ====
-In PuTTY configure a session for //Server A//. I.e. particularly fill in //Host Name//. Then switch to //Connection > SSH > Tunnels// tab. And add new forwarded port:+In PuTTY configure a session for //Server A//. I.e. particularly fill in //Host Name//. Then switch to //Connection > SSH > Tunnels// page. And add new forwarded port:
  * //Source port//: Any free local port, typically above 3000. Example: 3111.   * //Source port//: Any free local port, typically above 3000. Example: 3111.
  * //Destination//: Hostname and port of the //Server B// separated by colon (the same information you would fill on //Session// dialog of WinSCP if you were connecting directly). The port will typically be SSH port 22. Example: example.com:22.   * //Destination//: Hostname and port of the //Server B// separated by colon (the same information you would fill on //Session// dialog of WinSCP if you were connecting directly). The port will typically be SSH port 22. Example: example.com:22.
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  putty.exe <Server A> -L 3111:<Server B>:22   putty.exe <Server A> -L 3111:<Server B>:22
-==== Connecting through the tunnel ====+==== [[tunnel_putty_connecting]] Connecting through the tunnel ====
In WinSCP configure an SFTP/SCP session for //Server B//. Most settings will be like if you connect to //Server B// directly (username, password, etc.). The only differences are: In WinSCP configure an SFTP/SCP session for //Server B//. Most settings will be like if you connect to //Server B// directly (username, password, etc.). The only differences are:
-  * //Host name//: Fill in "localhost".+  * //Hostname//: Fill in "localhost".
  * //Port number//: Fill in //Source port// of forwarded port. Example: 3111.   * //Port number//: Fill in //Source port// of forwarded port. Example: 3111.
Save the session and login. Save the session and login.
===== [[ftp_putty]] Setting up tunnel using PuTTY for FTP session ===== ===== [[ftp_putty]] Setting up tunnel using PuTTY for FTP session =====
 +
==== Setting up the tunnel ==== ==== Setting up the tunnel ====
-In PuTTY configure a session for //Server A//. I.e. particularly fill in //Host Name//. Then switch to //Connection > SSH > Tunnels// tab. And add new forwarded port:+In PuTTY configure a session for //Server A//. I.e. particularly fill in //Host Name//. Then switch to //Connection > SSH > Tunnels// page. And add new forwarded port:
  * //Source port//: Any free local port, typically above 3000. Example: 3111.   * //Source port//: Any free local port, typically above 3000. Example: 3111.
  * //Destination//: Leave empty.   * //Destination//: Leave empty.
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  putty.exe <Server A> -D 3111   putty.exe <Server A> -D 3111
-For more information see [[http://the.earth.li/~sgtatham/putty/0.60/htmldoc/Chapter3.html#using-port-forwarding|PuTTY documentation on port forwarding]].+For more information see [[&amp;url(puttydoc)/Chapter3.html#using-port-forwarding|PuTTY documentation on port forwarding]].
==== Connecting through the tunnel ==== ==== Connecting through the tunnel ====
-In WinSCP configure an FTP session for //Server B//. Then go to //[[ui_login_proxy|Connection > Proxy]]// tab+In WinSCP configure an FTP session for //Server B//. Then go to //[[ui_login_proxy|Proxy page]]// on Advanced Site Settings dialog
-  * Set //Proxy type// to SOCKS5·(this will force [[ui_login_connection#connection|passive mode]] if it was not set already). +  * Set //Proxy type// to SOCKS5.((This will force [[ui_login_connection#connection|passive mode]], if it was not set already.)) 
-  * //Proxy host name//: Fill in "localhost".+  * //Proxy hostname//: Fill in "localhost".
  * //Port number//: Fill in //Source port// of forwarded port. Example: 3111.   * //Port number//: Fill in //Source port// of forwarded port. Example: 3111.
Save the session and login. Save the session and login.

Last modified: by martin