Needed a place to record some notes about WinSCP and PuTTY...
Sometimes, especially when behind a corporate firewall, it's useful to know how
to set up WinSCP for use via "tunneling."
First, find and reach a Linux box to which you have rights. You'll use that
host as the tunnel. Let's assume for this example that ours is
To expand the example, let's also assume that we must operate through a proxy.
Ours here is an HTTP proxy over port 8080, web-proxy.acme.com.
Once you have that, follow the steps below. Remember that this is for just one
site and you must do it within the context of that site. If at any time during
these steps you click on Session in the upper-left corner of the left
pane and see anything other than the hostname/username pair you're creating a
session for (in our example here: pookie.com/pookie), then it
This works with putty similarly and this utility has similar proxy and
tunneling settings of its own.
Normally, I just use putty to get into my Linux host and do stuff when
I'm on a Windows machine and don't have a Linux command line handy. However, it
can do much more such as this operation in support of helping Thunderbird get
mail from Google.
Having launched putty, we create a session and save it. Let's use the
same make-believe host as higher up in the WinSCP example.
This example is a little confusing since it's the before and after: to set up
forwarding of port 3128 (arbitrarily chosen), you type "3128" into Source
port, click the Dynamic button and then Add. The result
is "D3128" in the Forwarded ports list.
Of course, you do have to launch putty and authenticate for this to
work. Here, I happen to be logged into (not gandalf.lordoftherings.net,
but) another host.
Turning to Thunderbird, I set up my Google mail account over IMAP as must be
Then, I go into Tools -> Options -> Advanced
-> Network & Disk Space -> Connection -> Settings. There I
set up my proxy, just as I would for Firefox browsing. I also set up a SOCKS
(v5) proxy for the local host (127.0.0.1) on port 3128.
Tools -> Options -> Advanced
-> Network & Disk Space -> Connection -> Settings
Magically after this, I'm getting my Google mail into Thunderbird despite
running behind a firewall and proxy set-up at work.