Open port ssh with modem router

dicou · 05-23-2004, 12:14 PM

Hi everybody,
I have a little problem,
i have a router (without firewall) and i want to open the ssh port.
I know the command iptables exist but i don't know how it works, and how to install it,
can anybody help me or tell me an another way to open it?
Thx a lot ;-)

trickykid · 05-23-2004, 12:51 PM

What type of router are we talking about here? Is it your own machine you have setup as a router or 3rd party router like Linksys or Netgear, etc? More details gets better responses.

dicou · 05-23-2004, 12:53 PM

Hi, thx for your interest,
it's a modem speedtouch Pro, Alcatel.
It's a modem router.
Thx

ToniT · 05-23-2004, 01:47 PM

Could you elaborate some more. You have a linux box working as a router or external router? You don't have a firewall, so every port should be open? You want to open ssh-port to where? To the router? To some machine behind your router-box?

dicou · 05-23-2004, 01:49 PM

i want to go on my computer from an another location.
I have an external router

ToniT · 05-23-2004, 01:49 PM

Oh.. you allready answered to some of those.

Do you have an internet-wide IP-address or does this router nat your local address?

dicou · 05-23-2004, 01:50 PM

i have an intert ip adress

ToniT · 05-23-2004, 01:52 PM

ok. If you haven't configured any firewall (and the router won't block packets), then just having ssh daemon running should do the trick.

What does it say if you try to take ssh connection to your ip addrress?

dicou · 05-23-2004, 01:54 PM

nothing, it doesnt work.

#>ssh [ip]
and i have to ctrl+c to kik it, it doesnt work :-/

ToniT · 05-23-2004, 01:59 PM

Try ssh -v [ip]
(it probably blocks to "debug1: Connecting to hostname [ip] port 22.")

What distribution you are having? Is there some default firewall configured?
What does the command 'iptables -v -L' say?

dicou · 05-23-2004, 02:25 PM

i cant try it here because i have juste one pc but,
i have mandrake distrib, no firewall
thx

ToniT · 05-23-2004, 03:34 PM

-You can do it by ssh:ing to some other internet-connected computer first.

-And the iptables -v -L gives empty chains with all having default policy accept?

-One thing to check: Does 'ssh localhost' work?

dicou · 05-23-2004, 04:08 PM

>ssh -v 83.157.135.78
OpenSSH_3.4 NetBSD_Secure_Shell-20020626, SSH protocols 1.5/2.0, OpenSSL 0x0090605f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to 83.157.135.78 [83.157.135.78] port 22.

i try it, and have that.