D-Link Forums

The Graveyard - Products No Longer Supported => Routers / COVR => DIR-825 => Topic started by: sgip2000 on April 02, 2009, 06:50:16 AM

Title: FTP port forwarding problem
Post by: sgip2000 on April 02, 2009, 06:50:16 AM

I have a DIR-825 with a DNS-323 NAS connected to it and am unable to access the FTP server on the DNS-323 remotely while connected to the DIR-825.  I am able to access the FTP server when using 2 other routers though.

I have public port 21 being forwarded to private port 21 on the DNS-323 on all routers.

Anyone have any suggestions?

Thanks.

Title: Re: FTP port forwarding problem
Post by: arod on April 02, 2009, 08:45:07 AM

Disable the Port Forwarding rule you created and apply it in Virutal Server.

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 02, 2009, 09:19:08 AM

Quote from: Ru-Fi-Oh on April 02, 2009, 08:45:07 AM

Disable the Port Forwarding rule you created and apply it in Virutal Server.

I've tried it both ways.

Title: Re: FTP port forwarding problem
Post by: smlunatick on April 02, 2009, 11:30:57 AM

I believe that FTP may also require port 20.

Title: Re: FTP port forwarding problem
Post by: Lycan on April 02, 2009, 01:34:21 PM

Is it passive or active FTP?

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 02, 2009, 02:09:07 PM

Quote from: Lycan on April 02, 2009, 01:34:21 PM

Is it passive or active FTP?

I've tried it both ways.  Neither work.

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 02, 2009, 02:10:29 PM

Quote from: smlunatick on April 02, 2009, 11:30:57 AM

I believe that FTP may also require port 20.

I believe this is the problem.  Unfortunately, the DIR-825 only has the option to forward port 21.

Title: Re: FTP port forwarding problem
Post by: smlunatick on April 03, 2009, 08:20:57 AM

I looked on at he emulator and you should be able to forward more than one port.

Instead of 21  you should be able to use 20-21 or 20, 21

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 03, 2009, 08:42:53 AM

Quote from: smlunatick on April 03, 2009, 08:20:57 AM

I looked on at he emulator and you should be able to forward more than one port.

Instead of 21  you should be able to use 20-21 or 20, 21

Yeah, I tried forwarding 20 and 21 to 21 on the DNS-323.  Same result.  Quite baffling.

Title: Re: FTP port forwarding problem
Post by: smlunatick on April 03, 2009, 08:49:56 AM

Port forwarding is to forward to ports to the same ports at the "destination"

Therefore you seem to need to Port Forward 20 / 21 to 20 / 21.   Change the forward rule to have both 20 / 21 in the TCP and UDP.    I was able to do this on previous D-Link routers.

It seems that the method you have used "might" be used as Port Trigger.

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 03, 2009, 08:54:07 AM

Quote from: smlunatick on April 03, 2009, 08:49:56 AM

Port forwarding is to forward to ports to the same ports at the "destination"

Therefore you seem to need to Port Forward 20 / 21 to 20 / 21.   Change the forward rule to have both 20 / 21 in the TCP and UDP.    I was able to do this on previous D-Link routers.

It seems that the method you have used "might" be used as Port Trigger.

Thanks for the suggestion.  Unfortunately, I have already tried that and it is not working either.

I'm actually getting the following errors when attempting to connect:

[08:44:26] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
[08:44:26] Client closed the connection.

Title: Re: FTP port forwarding problem
Post by: smlunatick on April 03, 2009, 01:13:01 PM

You can:

Try setting a DMZ port to the FTP server

OR

Tweak around the    Application Level Gateway (ALG) Configuration

Title: Re: FTP port forwarding problem
Post by: sgip2000 on April 03, 2009, 01:40:36 PM

Quote from: smlunatick on April 03, 2009, 01:13:01 PM

You can:

Try setting a DMZ port to the FTP server

OR

Tweak around the    Application Level Gateway (ALG) Configuration

Tried setting setting DMZ for the FTP server.  Haven't tried any ALG changes though.

Title: Re: FTP port forwarding problem
Post by: combe on May 19, 2009, 10:12:08 PM

I'm having this exact same problem accessing my NAS ftp (a readynas duo); it worked perfectly using both port-forwarding and virtual server forwarding under my old DGL-4500, but I'm having a heck of a time trying to get it to work with my new DIR-825.  I've DMZ'ed my NAS, used both portforwarding (with both 20 and 21) and virtual server, and so forth.  Nothing seems to be working.  Any help on this would greatly be appreciated.

Title: Re: FTP port forwarding problem
Post by: arod on May 20, 2009, 10:09:17 AM

Try disabling SPI and set NAT Endpoint Independent for both TCP and UDP. Are you running any local AV's or firewalls?

Title: Re: FTP port forwarding problem
Post by: lizzi555 on May 20, 2009, 10:41:35 AM

Check the LAN settings of the DNS-323.
You have entered a static IP-address 192.168.0.x and the Gateway is set to 192.168.0.1 (DIR-825) ?

You need only to forward port 21 TCP as Virtual Server to the address of the DNS.