How to create a vpn/ssh tunnel: Difference between revisions

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= FOR LINUX AND MAC OS =


'''== FOR MAC: =='''
I am going to illustrate how to create a ssh tunnel using a couple examples.


Pretend ''you want to create a ssh tunnel from your laptop to gimel through the portal.''
 
First open two terminals.  In one terminal type the following:


Go to the app store and search for “ssh tunnel manager”
ssh <options/flags> localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l <username>
ssh -vCL localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l jjg


Download this free app.
In the other terminal type:


Click the “Show in menu bar” button on the upper lefthand corner.
ssh -p 2222 <username>@localhost
ssh -p 2222 jjg@localhost


Open it and then click the little ‘+’ sign on the bottom part of the white box.
Then when you log in type hostname and you will see that you are logged into gimel!


Enter the following information:
Here's another example, say ''you want to scp files directly from your laptop to your home directory on gimel.''


For the Name field, name it whatever you want.
First open two terminals.  In one terminal type the following:


Login: your_user_name
ssh <options/flags> localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l <username>
ssh -vCL localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l jjg


Host: portal.uoft.bkslab.org
In the other terminal type:
scp -P 2222 file_you_want_to_copy <username>@localhost:~


Port: ssh_port
= FOR WINDOWS OS =


Then click on the Options button in the bottom righthand corner.
Open putty.exe and select the session that you want to use as a ssh tunnel (ie portal.uoft.bkslab.org).


Make sure “Handle authentication” is checked and check the “Enable SOCKS4 proxy”.
Then click on Connection -> SSH -> tunnels


Make sure the port is 1080 (or something above port 1024).
In Source Port enter 1080 (or any port above 1024).
 
Then click the Dynamic button and then click Add. 
 
It should look like this:
 
 
[[File:proxy1.png]]
 
 
Then go back to Session and click Save.
 
Then download the "standard" version of FoxyProxy here:  http://getfoxyproxy.org/downloads.html
 
Once you’ve downloaded it there should be a little fox picture next to the url bar (upper right hand corner of web browser).  Click on that little picture and select Options from the dropdown list.
 
You should see this:
 
 
[[File:foxy1.png]]
 
 
Click on Add New Proxy
 
Then click on the General tab.
 
Enter a proxy name and then select the Proxy Details tab.
 
Enter “localhost” in “Host or IP Address” and 1080 for “Port” (or whatever port number you entered in putty).
 
Click the “SOCKS proxy?” Button and make sure the “SOCKS v5” button is also clicked.


Your screen should look like this:
Your screen should look like this:




[[File:tunnelMac.png]]
[[File:foxy2.png]]




Then close the SSH Tunnel Manager.
Then click Save.


Go to System Preferences -> Network
Then click on the fox again on the upper right hand corner and click on “Us proxy whatever_you_named_it Proxy for all URLs”


Click on the connection you are connected to (ie Airport, Ethernet, etc).
Then click on putty and open your session.  A terminal will pop up and ask for your passphrase.  Enter your passphrase (for your ssh key). That’s it!


Then click on Advanced in the bottom right corner.


Then click on Proxies up in the top right of the box.
To test if your tunnel is good, go to: http://whatismyipaddress.com/


Then check SOCKS Proxy
This will tell you what ip address you have.  If it says the IP address of the remote host you're connecting to in putty, you are good to go! :) 


Then under “SOCKS PROXY SERVER” enter localhost and to the right 1080 (or whatever port you decided to use previously).
This session will remain open as long as your ssh putty session is open.


It should look like this:


'''To scp files in Windows''' through this ssh tunnel, download WinSCP here: http://winscp.net/download/winscp551setup.exe
Once it finishes downloading, run it and go through all the prompts.  You can (if you want) to import all your existing sessions from putty, but it’s really not necessary. 
Once it’s done, open it. 
Click on “New Site”.
Then, in the File protocol drop down menu, select SCP.
In Host name, put the host name or IP address of the machine you want to transfer files to.
Keep the port number as 22.  It should look something like this:
[[File:scp1.png]]
Then click on Advanced -> Connection -> Proxy
Click on the “Proxy type” drop down menu and select SOCKS5.
For “Proxy host name” write localhost.  Make the port number 1080 (or whatever port you chose to use in putty).
it should look like this:
[[File:scp2.png]]
Click OK, then Save.
It will prompt you to enter a name, call it whatever makes sense to you.


[[File:proxy1080.png]]
Assuming that your putty session is still open, click Login.


It should prompt you to enter your username and password in the bottom. 


Click OK, then apply.
You should then see a screen that looks like this:


Then go to the ssh Tunnel Manger and click the “play”button on the right hand side:


It should say connected and possibly prompt you for your password (the one associated with your ssh key).
[[File:scp3.png]]


To test if your tunnel is good, go to: http://whatismyipaddress.com/


This will tell you what ip address you have.  If it says 142.150.250.15, you are good to go! :) 
To transfer files from one to the other, select the file that you want to transfer and then click “Upload” to transfer files to the server and then specify which folder you want to save it to.  If you are downloading files from the server to your computer, click the file you want to download and then click “Download” and specify where you want to download it to.


Your computer will now act as if you were connected to the internet in the lab.
To exit, click on session -> disconnect




When you’re done with the vpn session click on the ssh Tunnel Manager and click the “stop” button.


Then go to System Preferences -> Network -> Advanced -> Proxies
'''When you are done''' with your vpn session, exit from the ssh putty session (type exit on the terminal screen).


and uncheck the SOCKS Proxy, click OK, then apply.
Then, on your browser, click on the little fox in the upper right hand corner and select “Disable FoxyProxy”.


That’s it!
[[Category:Tutorials]]
[[Category:Internal]]

Latest revision as of 17:51, 7 April 2022

FOR LINUX AND MAC OS

I am going to illustrate how to create a ssh tunnel using a couple examples.

Pretend you want to create a ssh tunnel from your laptop to gimel through the portal.

First open two terminals. In one terminal type the following:

ssh <options/flags> localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l <username>
ssh -vCL localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l jjg

In the other terminal type:

ssh -p 2222 <username>@localhost
ssh -p 2222 jjg@localhost

Then when you log in type hostname and you will see that you are logged into gimel!

Here's another example, say you want to scp files directly from your laptop to your home directory on gimel.

First open two terminals. In one terminal type the following:

ssh <options/flags> localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l <username>
ssh -vCL localhost:2222:gimel:22 -D1080 portal3.ucsf.bkslab.org -l jjg

In the other terminal type:

scp -P 2222 file_you_want_to_copy <username>@localhost:~

FOR WINDOWS OS

Open putty.exe and select the session that you want to use as a ssh tunnel (ie portal.uoft.bkslab.org).

Then click on Connection -> SSH -> tunnels

In Source Port enter 1080 (or any port above 1024).

Then click the Dynamic button and then click Add.

It should look like this:


Proxy1.png


Then go back to Session and click Save.

Then download the "standard" version of FoxyProxy here: http://getfoxyproxy.org/downloads.html

Once you’ve downloaded it there should be a little fox picture next to the url bar (upper right hand corner of web browser). Click on that little picture and select Options from the dropdown list.

You should see this:


Foxy1.png


Click on Add New Proxy

Then click on the General tab.

Enter a proxy name and then select the Proxy Details tab.

Enter “localhost” in “Host or IP Address” and 1080 for “Port” (or whatever port number you entered in putty).

Click the “SOCKS proxy?” Button and make sure the “SOCKS v5” button is also clicked.

Your screen should look like this:


Foxy2.png


Then click Save.

Then click on the fox again on the upper right hand corner and click on “Us proxy whatever_you_named_it Proxy for all URLs”

Then click on putty and open your session. A terminal will pop up and ask for your passphrase. Enter your passphrase (for your ssh key). That’s it!


To test if your tunnel is good, go to: http://whatismyipaddress.com/

This will tell you what ip address you have. If it says the IP address of the remote host you're connecting to in putty, you are good to go! :)

This session will remain open as long as your ssh putty session is open.


To scp files in Windows through this ssh tunnel, download WinSCP here: http://winscp.net/download/winscp551setup.exe

Once it finishes downloading, run it and go through all the prompts. You can (if you want) to import all your existing sessions from putty, but it’s really not necessary.

Once it’s done, open it.

Click on “New Site”.

Then, in the File protocol drop down menu, select SCP.

In Host name, put the host name or IP address of the machine you want to transfer files to.

Keep the port number as 22. It should look something like this:


Scp1.png


Then click on Advanced -> Connection -> Proxy

Click on the “Proxy type” drop down menu and select SOCKS5.

For “Proxy host name” write localhost. Make the port number 1080 (or whatever port you chose to use in putty).

it should look like this:


Scp2.png


Click OK, then Save.

It will prompt you to enter a name, call it whatever makes sense to you.

Assuming that your putty session is still open, click Login.

It should prompt you to enter your username and password in the bottom.

You should then see a screen that looks like this:


Scp3.png


To transfer files from one to the other, select the file that you want to transfer and then click “Upload” to transfer files to the server and then specify which folder you want to save it to. If you are downloading files from the server to your computer, click the file you want to download and then click “Download” and specify where you want to download it to.

To exit, click on session -> disconnect


When you are done with your vpn session, exit from the ssh putty session (type exit on the terminal screen).

Then, on your browser, click on the little fox in the upper right hand corner and select “Disable FoxyProxy”.