ssh server for remote access

**rhassan** · 02-08-2005

Hi

I have a dsl connection with a static IP and my linux box connects to the internet via dhcp. I would like to access my pc remotely via ssh. I am not entirely sure how to use my static IP to access my pc which has a local ip of 192.168.1.103.
any help would be appreciated.

thanks

**lakerdonald** · 02-08-2005

I suggest a program called OpenSSH. It's relatively intuitive and easy to configure/customize and very powerful.

**rhassan** · 02-08-2005

I have sshd running on my machine.

**adrenaline** · 02-08-2005

You need to port forward port 22 to your linux box in your router. then when you are remote you type ssh -l <username> IP of router
ssh -l jbloe 63.145.113.87 #ip is made up for example
in your router there should be a port forward section or port trigger
22 tcp ssh 192.168.1.103 enable
apply
That should be all it takes
Let me know if this is not clear

**lakerdonald** · 02-08-2005

Well you'll have to configure your Router to forward packets on port 20 (or whatever port you're running SSH on) to 192.168.1.103. This method varies from router to router. Which model do you have? This should be in any documentation which came with the router, or check online.

**kkubasik** · 02-09-2005

Most routers provide a webaccessable interface. Your routers IP is most likely

192.168.0.1
192.168.1.1
192.168.100.1
10.0.10.1
10.0.10.10

try typing those addresses into a web browser to dig up an interface for your router. The manufactuers site would most definatly have more information on that though. Make sure that you forword both UDPand TCP connections, the new ssh2 protocol its cool with TCP only, but some of the much older ones still attempt UDP first i believe. Just should login's take a while, then try adding UDP.

**rhassan** · 02-09-2005

thanks guys. I've got it working...

**Workaphobia** · 02-09-2005

Quick question, if I can hijack this thread for a sec

. If I have a linux box that uses DHCP for the router, will the port forwarding still automatically work if the box changes ips? That is, does the router remember what hardware address gets what packet, or does it go by ip alone? I'll probably end up switching to a static ip within the network anyway, but I'm really curious about this.

**lakerdonald** · 02-09-2005

I'm pretty sure that it goes by IP. But you can set up all good routers/DHCP servers to bind certain IPs to certain MACs

**adrenaline** · 02-09-2005

Originally Posted by Workaphobia

Quick question, if I can hijack this thread for a sec

. If I have a linux box that uses DHCP for the router, will the port forwarding still automatically work if the box changes ips? That is, does the router remember what hardware address gets what packet, or does it go by ip alone? I'll probably end up switching to a static ip within the network anyway, but I'm really curious about this.

If you are going to port forward you will need to have a static IP. The forwarding is configured hard to that IP address. It won't know where to go if it got dhcp'd some other address.
Make sense?
Mike

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