[mythtv-users] MINI HOWTO: Connection to mythweb using ssh

Ciaran ciaranj at gmail.com
Tue Sep 28 09:41:59 EDT 2004

Just as a minor addendum, an alternative tunnel client in windows can
be found here :

http://www.delight.ch/  (SSH Tunnel Client) [Don't panic the download
is multi-lingual]

I use it in preference to putty as its *very* easy to use and sits
neatly in my system tray :)
Good tutorial, its always 'fun' trying to explain tunnelling to people <g>

On Tue, 28 Sep 2004 09:22:31 -0400, Christopher Flynn
<flynnguy at gmail.com> wrote:
> I don't know if there is any interest or not but I figured I would try
> and start a trend here. I wrote up a mini howto on how to access
> mythweb by using an ssh tunnel. This would be useful if you want to
> use ssh from somewhere except you don't want the possibility of
> someone finding your web server and attacking it.
> MINI HOWTO: Connection to mythweb using ssh
> author: Christopher Flynn
> date: 9/28/04
> I am going to briefly describe how to connect to mythweb that is
> behind a firewall in a router. I will assume you have mythweb running.
> If you need help with that please see the mythweb documentation:
> http://www.mythtv.org/docs/ I will also assume that you know how to
> forward ports on your router. This is different for each router so I
> will not try and cover that here. You can consult the documentation
> that came with your router for instructions on how to do that. You
> will need to forward port 22 to the ipaddress that your computer with
> mythtv is running. To find out the ipaddress type: ifconfig and look
> for the following line:
> inet addr: Bcast: Mask:
> It should be under the eth0 section. If you are running multiple
> ethernet cards then it is up to you to figure out which section you
> need. Your numbers may be different but you specifically need the
> number that is where the number is in my example above.
> To connect you will need ssh. The version I am currently using is
> OpenSSH 3.8.1p1. Most UNIX variants come with ssh and if they don't it
> should be easy to get. For windows you can use cygwin, which emulates
> a UNIX environment, or you can use an ssh program like PuTTY. If you
> need to use windows on a daily basis I would recommend installing
> cygwin because it has a lot of other UNIX tools other than just ssh.
> If you are somewhere and don't want to install a lot of stuff, PuTTY
> is a great solution because it is one .exe file so there is no
> install, you just run it. First I will briefly cover ssh.
> ssh stands for secure shell and is used most to connect to a remote
> machine using encryption so no one can eavesdrop. To connect to a
> remote machine is easy, just type:
> ssh username at remotedomain
> my username is cflynn and on my local network I want to connect to
> (you can use the ip address instead of a domain name
> like somewhere.com which you may not have) in this case I would type:
> "ssh cflynn at" It will ask me if I want to accept the key
> into my keychain the first time, say yes. It will then ask your for
> you password. You are now connected to your remote computer and can do
> pretty much whatever you could if you were connected to that computer.
> Putty works similarly except when you run it you get a dialog box and
> you just need to put the user at remotedomain line in the field for "Host
> Name (or IP address)" but leave the Port number alone. (It should be
> 22)
> Now this will let you do most things but it won't let you run X11
> programs. For this you can give it the -X flag but I am not going to
> go into that here since our main concern is mythweb.
> To foward a port you need to use the -L option and it will look
> something like this:
> ssh -L <local port>:localhost:<remote port> user at remotedomain
> The local port is what you connect your web browser to. The default
> web port is port 80. If you are already running a web server on your
> local computer you can specify another port here and then point your
> web browser to that port. (examples to follow) the line localhost is
> where the connection to your browser will happen, it should be your
> computer. The default domain name is localhost but if that doesn't
> work you can use the ip address which is called a loopback
> because it points to the computer you are on. The remote port is the
> port on the remote computer that the web browser is running. This too
> will most likely be port 80 but if you are running your web server on
> a different port, then that gets specified here. user at remotedomain is
> just like above.
> Got all that? So an example would be:
> ssh -L 80:localhost:80 cflynn at mydomain.com
> This will prompt you for a password and it will seem like all you did
> was ssh to your remote computer. Now open up your web browser and
> point it to: http://localhost/mythweb/
> (note: You need to keep the terminal window that you typed the ssh
> command open or the ssh tunnel will close) Now if you don't have a
> domain name, just use your WAN ipaddress. Usually you can find that
> information from your router.
> Now if you are running a web server on your local computer, you will
> need to use a different port. In this case we'll use 8080 because it's
> a nice number. In this case you would type:
> ssh -L 8080:localhost:80 cflynn at mydomain.com
> Notice the remote port stays the same. Now point your browser to the
> new port: http://localhost:8080/mythweb/
> To tunnel using PuTTY, in the connection dialog box go to
> Connection->SSH->Tunnels and at the bottom for the source port is the
> same as the <local port> above and the destination should be:
> "localhost<remote port>. Also below that make sure local is selected.
> Then click the add button. Remember, don't close the putty window or
> your tunnel will close as well.
> Well that's about it, if you have any questions or comments, please
> reply to the mailing list so they get archived as well. If you think
> these mini howtos are a good idea let it be known or even submit your
> own! I don't know a whole lot about mythtv but I know a bit about
> UNIX. Also if you think it's a bad idea let everyone know too. I
> figure the mailing list is the best place for these because then they
> will be accesible via the archives.
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- Ciaran
http://www.wombatinvasion.com/ (Share the love)

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