Get SSH access to laptop regardless of machine's connected network

matthewbauer · 2010-01-09 00:57:57

Do any Arch users have tricks to do this?

I was thinking it would be possible to with Crontab and SSH tunneling like so (doesn't seem to work though):

ssh -N -L2001:localhost:22 bauer.dnsdojo.com

But I wanted to know if anyone is able to get over the problem of not knowing your machines external IP.

pyther · 2010-01-09 01:11:07

Why not use something like dyndns or noip?

matthewbauer · 2010-01-09 05:49:35

pyther wrote:

Why not use something like dyndns or noip?

Okay that's what I was looking for. But what if you share an external IP? Is there anyway to get around that?

tomk · 2010-01-09 08:38:53

Then you configure your router to forward specific ports to specific machines, and connect using ssh's -p flag.

matthewbauer · 2010-01-09 21:39:40

But what if I'm not the admin of the network, just using it? I'm thinking this is impossible.

pyther · 2010-01-09 21:51:20

Maybe you could ask the admin to open a port for you?

mikesd · 2010-01-09 22:35:26

If you are behind a NAT gateway, you don't control, your options are limited if they won't forward a port for you. You could use a reverse SSH connection[1]. If the connection tends to drop out it may be a problem. A cronjob to check the connection every now and then and recreate it if needed might work. If you have access to an external machine a VPN might be better. Your laptop would be the client and connect to the external machine, you would ssh to the external machine and then onto your laptop.

[1] http://www.vdomck.org/2005/11/reversing … ction.html

knedlyk · 2010-01-09 23:59:12

@matthewbauer: Look there: http://samy.pl/chownat/ .

sand_man · 2010-01-10 00:48:07

knedlyk wrote:

@matthewbauer: Look there: http://samy.pl/chownat/ .

That's pretty amazing stuff right there...

silvik · 2010-01-22 02:44:36

hamachi is the easiest solution IMO

Arch Linux

#1 2010-01-09 00:57:57

Get SSH access to laptop regardless of machine's connected network

#2 2010-01-09 01:11:07

Re: Get SSH access to laptop regardless of machine's connected network

#3 2010-01-09 05:49:35

Re: Get SSH access to laptop regardless of machine's connected network

#4 2010-01-09 08:38:53

Re: Get SSH access to laptop regardless of machine's connected network

#5 2010-01-09 21:39:40

Re: Get SSH access to laptop regardless of machine's connected network

#6 2010-01-09 21:51:20

Re: Get SSH access to laptop regardless of machine's connected network

#7 2010-01-09 22:35:26

Re: Get SSH access to laptop regardless of machine's connected network

#8 2010-01-09 23:59:12

Re: Get SSH access to laptop regardless of machine's connected network

#9 2010-01-10 00:48:07

Re: Get SSH access to laptop regardless of machine's connected network

#10 2010-01-22 02:44:36

Re: Get SSH access to laptop regardless of machine's connected network

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