[ale] Tunneling from behind firewall to my firewalled desktop

James Sumners james.sumners at gmail.com
Mon Oct 5 12:24:54 EDT 2009


What I would do is setup an SSH SOCKS proxy to your home machine. Then
you can have your machine behind the annoying firewall use your home
connection for all proxied services. For example, `ssh -D 5555
my.home.ip` will establish the proxy "server" over your SSH
connection. Then you can tell whatever local apps (e.g. Firefox,
Filezilla) to use localhost:5555 for the proxy server. Yay! You've
circumvented their asinine rules.

The only problem I see is your router. The stock Linksys firmware
probably laughs at the thought of doing DNAT. If the port your are
forwarding isn't going to the same port on the internal IP it just
won't work. So, you will have to tell your SSHD to listen on the port
to which you want to connect. In this case, I would use port 443.

On Mon, Oct 5, 2009 at 11:07 AM, tom <tfreeman at intel.digichem.net> wrote:
>
> I'm getting annoyed with my (current) inablility to get this working.
> I am spending a fair amount of time working at a site with wireless
> access which appears to allow dns and http type access only. I want
> get to my desktop at home, which sits behind a Linksys hardware
> router. I've tried ssh directly, and that appears to be blocked
> at their perimeter. So I've got a twofold question:
>
> First - how do I locate which ports their firewall has open on the
> very qt? Since I can web surf, and access secure web pages, without
> formally setting up a proxy, I expect I should be able to get out
> on those ports, but I like the idea of knowing what is going on
> anyway.
>
> Second - On the home end, what do I need to do to this silly
> Linksys BEFRv4 blue screen errr... box to move a connection from
> either port 80 or port 441 to where I have ssh enabled on my desktop?
> I'm not having much good fortune on this.
>
>
> Thanks in advance


-- 
James Sumners
http://james.roomfullofmirrors.com/

"All governments suffer a recurring problem: Power attracts
pathological personalities. It is not that power corrupts but that it
is magnetic to the corruptible. Such people have a tendency to become
drunk on violence, a condition to which they are quickly addicted."

Missionaria Protectiva, Text QIV (decto)
CH:D 59


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