Router is Somehow Interfering with PASV

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Flawedspirit
Posts: 2
Joined: Sat Mar 19, 2011 12:51 am

Router is Somehow Interfering with PASV

Post by Flawedspirit » Sat Mar 19, 2011 1:04 am

To be very clear, I spent over 3 hours searching these forums and FAQ for the answer to this particular question, but to no avail. All I know is that the router is somehow affecting packets, because all the proper ports are forwarded in both Windows Firewall, and my router. I even tried the whole "going into the server settings and setting my internal IP as the PASV IP" thing it suggested in the FAQ. Absolutely no change. I've reset my router and firewall to factory defaults five times already.

Log is as follows:

Code: Select all

2011/03/19 00:54:41	     	 Intel(R) Core(TM) i3 CPU         540  @ 3.07GHz with 1 Processor, 2 Cores (4 Threads)
2011/03/19 00:54:41 Microsoft Windows 7 Ultimate Edition, 64-bit

2011/03/19 00:54:41 Cerberus FTP Server 4.0.9.0 (x64) - Professional started on '<********>'
2011/03/19 00:54:41 Installed as a Windows Service but started in application mode

2011/03/19 00:54:41 TLS/SSL support ready - 'RSA' keys loaded

2011/03/19 00:54:41 Cerberus added to Windows Firewall Exception list

2011/03/19 00:54:41 Interface 120 (FTP) listening at 192.168.1.102 on port 21
2011/03/19 00:54:41 Interface 121 (FTPS) listening at 192.168.1.102 on port 990
2011/03/19 00:54:41 Interface 122 (SFTP) listening at 192.168.1.102 on port 22
2011/03/19 00:54:41 Interface 123 (FTP) listening at 127.0.0.1 on port 21
2011/03/19 00:54:41 Interface 124 (FTPS) listening at 127.0.0.1 on port 990
2011/03/19 00:54:41 Interface 125 (SFTP) listening at 127.0.0.1 on port 22
2011/03/19 00:54:56 [53] Incoming connection request on interface 120 at 192.168.1.102
2011/03/19 00:54:56 [53] FTP Connection request accepted from ***.***.***.***
2011/03/19 00:54:56 [53] USER anonymous
2011/03/19 00:54:56 [53] 331 User anonymous, password please
2011/03/19 00:54:56 [53] PASS ***********
2011/03/19 00:54:56 [53] Could not authenticate Native user 'anonymous' : Unable to find user 'anonymous'
2011/03/19 00:54:59 [53] 530 Not logged in. Username/password incorrect, user disabled, or user logged in too many times
2011/03/19 00:54:59 [53] The client closed the connection
2011/03/19 00:54:59 [53] Connection terminated
2011/03/19 00:54:59 [54] Incoming connection request on interface 120 at 192.168.1.102
2011/03/19 00:54:59 [54] FTP Connection request accepted from ***.***.***.***
2011/03/19 00:55:01 [54] USER <********>
2011/03/19 00:55:01 [54] 331 User <********>, password please
2011/03/19 00:55:01 [54] PASS ***********
2011/03/19 00:55:01 [54] Native user '<********>' authenticated
2011/03/19 00:55:01 [54] 230 Password Ok, User logged in - This is an UNLICENSED copy of Cerberus FTP Server Personal edition
2011/03/19 00:55:01 [54] SYST
2011/03/19 00:55:01 [54] 215 UNIX Type: L8
2011/03/19 00:55:01 [54] PWD
2011/03/19 00:55:01 [54] 257 "/" is the current directory
2011/03/19 00:55:01 [54] TYPE I
2011/03/19 00:55:01 [54] 200 Type Binary
2011/03/19 00:55:01 [54] PASV
2011/03/19 00:55:01 [54] 227 Entering Passive Mode (***,***,***,***,43,56) (port 11021)
2011/03/19 00:55:01 [54] SIZE /
2011/03/19 00:55:01 [54] 550 Size can only be used on files
2011/03/19 00:55:01 [54] MDTM /
2011/03/19 00:55:01 [54] 553 Getting or setting date/time on the root not allowed
2011/03/19 00:55:01 [54] RETR /
2011/03/19 00:55:01 [54] 550 User does not have download permission
2011/03/19 00:55:01 [54] PASV
2011/03/19 00:55:01 [54] 227 Entering Passive Mode (192,168,1,102,43,57) (port 11022)
2011/03/19 00:55:01 [54] CWD /
2011/03/19 00:55:01 [54] 250 Change directory ok
2011/03/19 00:55:01 [54] LIST
2011/03/19 00:56:32 [54] Timeout while waiting for connection
2011/03/19 00:56:32 [54] Unable to accept passive connection
2011/03/19 00:56:32 [54] For help see http://www.cerberusftp.com/support/faq/initialsetup.htm#Q3
2011/03/19 00:56:32 [54] 425 Unable to open the data connection
2011/03/19 00:56:32 [54] The client closed the connection
2011/03/19 00:56:32 [54] Connection terminated
The most vexing part is that I can connect absolutely perfectly if I were to type in my internal IP (the 192.168.etc.)! If anyone has a solution that works, I'd be greatly indebted. I've gotten this working before, and I don't know why it couldn't be working now.

Flawedspirit
Posts: 2
Joined: Sat Mar 19, 2011 12:51 am

Re: Router is Somehow Interfering with PASV

Post by Flawedspirit » Sat Mar 19, 2011 2:18 pm

EDIT: Never mind. The problem was that my router is programmed to not loop back upon itself by sending a signal out then back in. I tried accessing my server with another computer on a different subnet and it worked out fine. I'm going to have to remember to connect using my actual loopback address and not my external IP.

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