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Author Topic: "Server Unavailable" message when attempting to access FTP server.  (Read 16873 times)

Lycan

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Re: "Server Unavailable" message when attempting to access FTP server.
« Reply #15 on: April 06, 2009, 03:48:27 PM »
Can you telnet the port from the WAN side?
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sgip2000

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Re: "Server Unavailable" message when attempting to access FTP server.
« Reply #16 on: April 06, 2009, 08:26:45 PM »
Quote from: Lycan on April 06, 2009, 03:48:27 PM
Can you telnet the port from the WAN side?

I can connect but cannot get to any directories.
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sgip2000

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Re: "Server Unavailable" message when attempting to access FTP server.
« Reply #17 on: April 09, 2009, 09:26:52 AM »
Any updates?
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Toink

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Re: "Server Unavailable" message when attempting to access FTP server.
« Reply #18 on: April 10, 2009, 03:11:09 AM »
You may be in a 'double NAT' environment. Have you tried DMZ-ing your router's WAN IP address in your modem's DMZ?

In my case, I have a Linksys WAG54GX modem router and an Asus WL-520GU where my DNS-323 is connected.

In the WAG54GX's DMZ, I placed my Asus WL-520GU WAN IP(ie 192.168.1.AAA). In the Asus WL-520GU I port-forward CCCC to 21 to the DNS-323's static IP address. DMZ in the Asus router is not active. My FTP in the DNS-323 is set to the default port 21 but my outside FTP port is set to 'CCCC' (ie server.myftp.org:CCCC) and it works within my network and outside of it.
« Last Edit: April 10, 2009, 03:23:22 AM by Toink »
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sgip2000

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Re: "Server Unavailable" message when attempting to access FTP server.
« Reply #19 on: April 10, 2009, 09:27:59 AM »
Quote from: Toink on April 10, 2009, 03:11:09 AM
You may be in a 'double NAT' environment. Have you tried DMZ-ing your router's WAN IP address in your modem's DMZ?

In my case, I have a Linksys WAG54GX modem router and an Asus WL-520GU where my DNS-323 is connected.

In the WAG54GX's DMZ, I placed my Asus WL-520GU WAN IP(ie 192.168.1.AAA). In the Asus WL-520GU I port-forward CCCC to 21 to the DNS-323's static IP address. DMZ in the Asus router is not active. My FTP in the DNS-323 is set to the default port 21 but my outside FTP port is set to 'CCCC' (ie server.myftp.org:CCCC) and it works within my network and outside of it.

Thank you for your response.

I don't think it's a double NAT problem since I have FIOS service which doesn't have a traditional modem.  When using a Westell 9000EM router, FTP access works as expected; however, with my D-link DIR-825, remote FTP access does NOT work.

I also have a DSL connection and I get the same results with that.

This leads me to believe that it is the DIR-825 router that is the problem.
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