FTP Server behind LAN Problems

[Si...]

Hi,

 

I`m having a few issues and I`m wondering if anyone can help?

 

I`m trying to set up an FTP server on my lan, but I can`t connect to the server.

 

Router/PC/Server specs

D-Link DSL-G624T Router

Windows XP Pro

Athlon 64 3500

2GB RAM

Cerberus FTP Server

 

I have added the PC into the virtual server settings in the router, and set up Cerberus as shown in the screen shows below:

 

 

 

 

The Router settings are shown below:

 

But when anyone tried to connect to the server they get an error:

Finding Host xxx.xxx.xxx.xxx:2121 ...

Connecting to xxx.xxx.xxx.xxx:2121

Connected to xxx.xxx.xxx.xxx:2121 in 0.000000 seconds, Waiting for Server Response

 

Failed to receive response after connect

Host type (1): Automatic Detect

 

This is the result of ipconfig /all

 

Microsoft Windows XP [Version 5.1.2600](C) Copyright 1985-2001 Microsoft Corp.C:\Documents and Settings\Si>ipconfig /allWindows IP Configuration		Host Name . . . . . . . . . . . . : si-8812ed6467b1		Primary Dns Suffix  . . . . . . . :		Node Type . . . . . . . . . . . . : Unknown		IP Routing Enabled. . . . . . . . : No		WINS Proxy Enabled. . . . . . . . : NoEthernet adapter Local Area Connection:		Media State . . . . . . . . . . . : Media disconnected		Description . . . . . . . . . . . : NVIDIA nForce Networking Controller		Physical Address. . . . . . . . . : 00-13-D4-D1-79-9DEthernet adapter Local Area Connection 2:		Connection-specific DNS Suffix  . :		Description . . . . . . . . . . . : Marvell Yukon 88E8001/8003/8010 PCIGigabit Ethernet Controller		Physical Address. . . . . . . . . : 00-13-D4-D1-8B-31		Dhcp Enabled. . . . . . . . . . . : No		IP Address. . . . . . . . . . . . : 192.168.1.22		Subnet Mask . . . . . . . . . . . : 255.255.255.0		Default Gateway . . . . . . . . . : 192.168.1.1		DNS Servers . . . . . . . . . . . : 192.168.1.1											192.168.1.2C:\Documents and Settings\Si>

 

I can connect using ftp://192.168.1.22:2121 but not from an external IP address.

 

I have my firewall turned off whilst I try to get this running.

 

Below are the results for netsh diag gui

 

Netdiag_01102006_004725.zip

 

 

Any Help would be appreciated

[wanzelbin]

Hi Si. Just a few thoughts that might help. You probably know / covered all this already, but it's not clear from your details.

 

How are you trying to access your server from an external machine - i.e. what IP address are you using? The 192.168... range is not Internet routable and nobody will be able to connect to you on that address from outside your LAN. Have you exposed your machine 192.168.1.22 (or at least the FTP service running on port 2121) in your router/firewall settings? It's usually called something like Port Forwarding, or depending on your setup, you might be able to use NAT.

 

If port forwarding, from an external machine you would attempt to connect to the external IP address of your router, which would in turn forward your request (depending on the port in your request) on to the 192.168.1.22 machine and the service running on port 2121.

 

E.g. router external IP = 217.8.240.75

Router setting to forward all connections for port 2121 (or whatever) to 192.168.1.22:2121.

External machine trying to connect to your ftp server would point to 217.8.240.75:2121.

 

With NAT, the 192.168.1.22 machine may be fully exposed and any port connection will be routed straight through.

 

If you've already covered all of that, perhaps its a passive versus active ftp issue. I won't try and explain everything about passive versus active ftp - check out http://slacksite.com/other/ftp.html if you don't know the details.

 

Hope some of that helps.

[Si...]

I`ve sorted it now, seems like the router CP doesn`t like firefox as it was hiding settings.

I used IE and sorted it within minutes

[wanzelbin]

I`ve sorted it now, seems like the router CP doesn`t like firefox as it was hiding settings.

I used IE and sorted it within minutes

Just noticed that your "virtual server" settings are the equivalent of the port forwarding stuff I was on about. Oh well. Pleased you sorted it anyway.

[corydoras]

Just noticed that your "virtual server" settings are the equivalent of the port forwarding stuff I was on about. Oh well. Pleased you sorted it anyway.

Also remeber guys that ftp is not like http. http uses port 80 for everything. ftp as a rule only uses port 21 to send commands up and down, data uses other ports. i'ts also a good idea to test ftp connections with a proper ftp client, not your web browser.

 

This link will explain it (ftp) better than I ever will.

 

http://slacksite.com/other/ftp.html

[Si...]

port 20 for data, but with ftp servers/clients you can specify the ftp port that you want to use, like I have in using 2121.

[wanzelbin]

Also remeber guys that ftp is not like http. http uses port 80 for everything. ftp as a rule only uses port 21 to send commands up and down, data uses other ports. i'ts also a good idea to test ftp connections with a proper ftp client, not your web browser.

 

This link will explain it (ftp) better than I ever will.

 

http://slacksite.com/other/ftp.html

 

Sure I've seen that link somewhere before...

[naph]

I`ve sorted it now, seems like the router CP doesn`t like firefox as it was hiding settings.

I used IE and sorted it within minutes

 

it looks like i have the same problem...

 

i have quite a good confidence with routers. and never had a problem configuring my old d-link di604.. now i have just bought a dsl624t and really can't manage how to make port forwarding work..

 

maybe you can explain me exactly which was the trick in this router??

 

thanks in advance

[naph]

it looks like i have the same problem.. but IE didn't showed up anything new than firefox in the firewall cp..

maybe you can explain it a little bit more ?