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Old March 25th, 2011, 06:48 PM
joostman joostman is offline
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Default Acces via Internet two FTP servers on 1 network

I have a Netgear DGN3500 and 2 NAS boxes in my network, they both NAS servers have also the functionality to provide basic FTP acces.
Both are predefined on port 21 for FTP and can't be changed.

Inside my network it does not give me problems accessing these FTP servers I just enter:
- FTP <IP_NAS1> and get the login prompt for NAS 1
- FTP <IP_NAS2> and get the login prompt for NAS 2

My problem lies when I try to access it from the Internet (Outside my network).
If I try to FTP to my providers IP adres, I only get 1 of these 2 FTP servers.
Of course I understand that both are fighting to be the one handling the incoming request (I defined them both in the firewall)

On my previous router I was able to tell to the outside world (Internet) that a connection to NAS 2 could be made via port 2121. On my router I mentioned if a request comes in for 2121 --> IP_NAS2, port 21 should be used.

How can I do this on my Netgear router?
I can find the redirection for a Port 2121 request to an IP adress, but I can not configure that this INSIDE my network should be Port 21.
(as I said in the beginning, I am unable to change the FTP port on these NAS hosts)

Below overview:

Code:
NAS1 <IP1> FTP port 21 <----------
                                 I                  /port 21 request \
                                 I--------<--------/                  \
 <My network>                     [Netgear DGN3500]                    <--<Internet>
                                 I--------<-------\                   /
                                 I                 \port 2121 request/
NAS2 <IP2> FTP port 21<-----------
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  #2  
Old March 30th, 2011, 04:40 PM
joostman joostman is offline
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Default Re: Acces via Internet two FTP servers on 1 network

Anyone a reply?
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  #3  
Old March 31st, 2011, 03:42 PM
Glitched Glitched is offline
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Default Re: Acces via Internet two FTP servers on 1 network

What you're wanting to do is port translation. I don't have this device personally so I downloaded the user manual for it. Looking through the manual it doesn't appear the DGN3500 supports port translation.
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Old March 31st, 2011, 04:32 PM
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jmizoguchi jmizoguchi is offline
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Default Re: Acces via Internet two FTP servers on 1 network

ANY home end will NOT support translation so answer is it will NOT work that way

you will need tow different port on FTP server..21 and 22.
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Old March 31st, 2011, 04:33 PM
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jmizoguchi jmizoguchi is offline
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Default Re: Acces via Internet two FTP servers on 1 network

"ANY" = NETGEAR home end routers
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