Accessing a QNAP ftp server behind a router

July 12, 2011 at 14:03:38
Specs: Windows 7
Hello there,

Problem: I cannot seem to see my server behind a cisco router. I have a feeling it is because our network phone system may be robbing the IP address?

We have two fixed IP addresses. The first one, is assigned to the router. We have two swtiches set up behind router and all the other network stuff interanally wrks great. We also have full internet access.

When I type the IP in on the web, it accesses the talkswitch phone system. I have set the internal IP to the server as fixed. I have port 21 open for FTP. When I run a test, the internet sees port 21 open. However, I cannot seem to cal lup the server over the internet. Could the talkswitch system somehow be interfereing with the logon?

What would the proper syntax be to access the server?

What the heck is going on?

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July 12, 2011 at 14:35:23
I think I might know what your problem is.

You said you opened port 21 on the router. If that's all you did, then that's why it isn't working.

Close that port you opened and then you'lll want to create a port forward. It will point ftp (port 21) to the internal (LAN) IP of your ftp server.

All different routers handle the port forward differently but every one I've seen calls it a "forward" so that's what you'll be looking for on your router's management interface.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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July 12, 2011 at 14:37:38

Sorry, I meant I forwarded port 21...not opened. Thanks for the try


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July 12, 2011 at 15:15:22
Do you have a static public ip address, or are you using something like DynDNS or NoIP?

If you know the public ip address, you can access the ftp server like this:
1. open cmd (command prompt)
2. type in ftp your_public_ip_address or ftp
3. type in username and password

You can not use something like ftp 192.168.x.x, to access your ftp server from the internet.
You have to use your public ip address.

You are expecting our help, we are expecting your response !!!

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