I am trying to allow a consultant access to my Debian Server and am a Linux newbie. I am unable to access the server from outside the network using SSH. I have two firewalls between the server and the outside. I have created an inbound service on the main firewall directed to the ip of the second firewall. Then on the second firewall I have allowed the ssh access to the internal ip of the server. Do I need to do something with NAT at the main firewall or do I need to configure the Linux Server to allow access from outside IP's?
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Yup in fact it always helps to check
- if it is locally accessible? If it is the daemon is working
- is accessible form the same lan ? If it is it means that both the firewall is allowing SSH and network setup is OK
- IS it accesible from outside? If not it might indicate that
- Reverser not is not set-up
- Firewall is preventing it
- Default gateway definition on SSHD Server might be wrong (since we know that it is accessible inside)
Cheers,
K.
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Answer for Membership
by: KeremEPosted on 2009-05-20 at 12:03:45ID: 24435192
Hi,
First of all you should check if SSH is running over the Debian BOX. The easiest way is using SSH over the box. Go to a comamnd prompt and type:
# ssh localhost
See if you can get a prompt. If now it seems that SSH is not working on your Debian box. In this case try this command:
/etc/init.d/ssh restart
This will restart if it is installed. If not try tthis command to install it:
apt-get install ssh openssh-server
Cheers,
K.