Connecting to a remote server


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# 1  
Connecting to a remote server

Hi,

I have an interesting problem. I cannot connect to a personal server I set up. What's interesting is that I can connect to it from the LAN using its non-local IP address. However, I cannot seem to connect to it from anywhere else.

Here's how my server is set up:
My entire home has a single Ethernet cable that goes directly into our router. Every device in the house is connected to the router. My server is on a static (local) IP address. The router is configured to forward the necessary ports to my server. So, when I tested out my connection, I was able to connect to my server from another computer on the same local area network using my non-local IP address (the IP address assigned to my router by my ISP). However, when I try to connect to my IP address from a computer that is not on my LAN using my non-local IP address, I receive an error like this:
Code:
10061 - Connection refused
The server you are attempting to access has refused the connection with the gateway. This usually results from trying to connect to a service that is inactive on the server.

I can connect to my server from my LAN using the router's IP address, but I can't connect to it from outside of my LAN using the router's IP address. Does anyone know what I'm doing wrong? Could there be some sort of setting I missed that's necessary to make my router "public?"
# 2  
Your router has got a build in firewall.
The firewall is set to allow connections from a pc on the local network to another pc on the local network. ( This is called forwarding ).


By default your ip firewall is set to deny incomming connections to your local network on some ports. the default ports are thos that are used by windows to connect to shared drives.

This is a very important security feature, if you disable these ports or allow traffic on these ports any one on the internet will be able to access your server if the find your public ip address.

Now if you had mail server on your local network and you wanted people to send mail to it on port 25 (SMTP) then you would set a rule in your firewall to allow incomming traffic on port 25 and to forward it to the internal mail server.

So you sepcify what port you allow traffic on and you specify that it can only go to one specific ip address.

Hope this helped
# 3  
I'm already forwarding the necessary ports

Quote:
Originally Posted by linuxjunkie
So you sepcify what port you allow traffic on and you specify that it can only go to one specific ip address.
Quote:
Originally Posted by Altay_H
My server is on a static (local) IP address. The router is configured to forward the necessary ports to my server. So, when I tested out my connection, I was able to connect to my server from another computer on the same local area network using my non-local IP address (the IP address assigned to my router by my ISP).
I have already set up port forwarding correctly, otherwise I would not be able to access my server via the non-local IP address of my router.
# 4  
Quote:
Originally Posted by Altay_H
Hi,
Code:
10061 - Connection refused
The server you are attempting to access has refused the connection with the gateway. This usually results from trying to connect to a service that is inactive on the server.

I can connect to my server from my LAN using the router's IP address, but I can't connect to it from outside of my LAN using the router's IP address. Does anyone know what I'm doing wrong? Could there be some sort of setting I missed that's necessary to make my router "public?"

Referring to your statement above.

Your firewall is set to block microsoft file and print sharing by default. If you have a samba server on the inside of your network and you want to connect to it from the outside of your network your firewall will block it.
# 5  
Quote:
Originally Posted by linuxjunkie
Referring to your statement above.

Your firewall is set to block microsoft file and print sharing by default. If you have a samba server on the inside of your network and you want to connect to it from the outside of your network your firewall will block it.
Perhaps I should have been more specific. I'm not trying to print from my server. I'm actually trying to SSH into it. Well, I'm trying to get any/all of the following protocols to work:
HTTP
FTP
SSH
VNC
However, they all result in a "Connection Refused", "Connection Timed Out" or similar error regardless of whether I'm trying to access them from Windows or Linux. Is a firewall blocking all of them? Can you explain how I can fix my problem?
# 6  
Did you check with your provider if they allow inbound connections. Some do, some block the protocols you mentioned above.
# 7  
Quote:
Originally Posted by pludi
Did you check with your provider if they allow inbound connections. Some do, some block the protocols you mentioned above.
I did not. Is there a simple way to do this, or must I call my ISP and ask them if they allow inbound connections on the relevant ports?

Also, if my ISP informs me that they will not allow the ports I need, is it possible to use different ports? For example, could I SSH over a port other than 22?
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