I have a Linksys RV042 dual-wan router (which directly responds to any traffic at *.*.*.*
) and my FTP server is running Windows Server 2003 R2 SP2 and IIS.
My server's local IP address is *.*.*.*
My router's port forwarding configuration looks like this:
DNS [UDP/53~53]->*.*.*.*
HTTP [TCP/80~80]->*.*.*.*
FTP [TCP/20~21]->*.*.*.*
The forwarded port configuration looks like this:
MXToolBox.com reports that my ports are open.
My server responds perfectly to ftp://<Server's Local Name>/
from any computer on my local network. Anonymous access to my FTP server is allowed from anywhere, and my server responds to the stardard FTP ports: 20-21
But when anyone tries to access ftp://joinedsoftware.com/ there is no response.
I have tested DNS from internal and external computers, and everything seems to resolve without any problems.
Using SmartFTP, this is what the log shows:
[12:45:20] SmartFTP v4.0.1122.0
[12:45:21] Resolving host name "joinedsoftware.com"
[12:45:21] Connecting to *.*.*.* Port: 21
[12:45:21] Connected to joinedsoftware.com.
[12:45:21] 220 Microsoft FTP Service
[12:45:21] USER anonymous
[12:45:21] 331 Anonymous access allowed, send identity (e-mail name) as password
[12:45:21] PASS (hidden)
[12:45:21] 230 Anonymous user logged in.
[12:45:21] SYST
[12:45:21] 215 Windows_NT
[12:45:21] Detected Server Type: Windows NT
[12:45:21] RTT: 6.702 ms
[12:45:21] FEAT
[12:45:21] 211-FEAT
[12:45:21] SIZE
[12:45:21] MDTM
[12:45:21] 211 END
[12:45:21] Detected Server Software: Microsoft IIS FTP Service
[12:45:21] TYPE I
[12:45:21] 200 Type set to I.
[12:45:21] REST 0
[12:45:21] 350 Restarting at 0.
[12:45:21] PWD
[12:45:21] 257 "/" is current directory.
[12:45:21] TYPE A
[12:45:21] 200 Type set to A.
[12:45:21] PASV
[12:45:21] 227 Entering Passive Mode (*,*,*,*,6,64).
[12:45:21] Opening data connection to *.*.*.* Port: 1600
[12:45:21] LIST -aL
[12:45:34] 425 Can't open data connection.
[12:45:34] PORT *,*,*,*,10,252
[12:45:34] 200 PORT command successful.
[12:45:34] LIST -aL
[12:45:34] 150 Opening ASCII mode data connection for /bin/ls.
[12:45:55] 425 Can't open data connection.
[12:46:25] NOOP
[12:46:25] 200 NOOP command successful.
[12:46:55] NOOP
[12:46:55] 200 NOOP command successful.
[12:47:25] NOOP
[12:47:25] 200 NOOP command successful.
What could be causing this scenario? Are there known issues with this router, or special router configurations that need to be set?