I'm implementing a simple FTP server. When debugging, I try to use FileZilla client to connet my server. The request and response pattern found in the command panel is listed below:
GREETING: 220 (FTP v1.0)
REQUEST: USER ***
RESPONS: 331 Password?
REQUEST: PASS ********
RESPONS: 230 login successfully.
REQUEST: PWD
RESPONS: 257 "/a/" is current directory.
REQUEST: TYPE I
RESPONS: 200 Type set to I.
REQUEST: PASV
RESPONS: 200 127,255,0,0,175,200(I specify local port 45000)
REQUEST: LIST
RESPONS: 150 here is the listing
RESPONS: 226 Transfer done.
However, there is an error followed Fail to read directroy. I think the passive connection is indeed established since I can get stream on the socket(I implement the server in C#). But I have no idea why is the error. Is it because I should send some handshake/greeting information like those in the control connection instead of sending the data directly to sync server and client? If yes, what's the status code of this information?
Thanks and Best Regards.
There is no handshake on data connection.
Maybe 'Fail to read directory' error is a result of incorrect format of the folder list your server returns?
Related
I have a FTP server on a Windows Server 2012 machine and I am trying to get setup.exe from it.
CMD.EXE log:
C:\>ftp 1.2.3.4
Connected to 1.2.3.4.
220-FileZilla Server version 0.9.45 beta
220-written by Tim Kosse (tim.kosse#filezilla-project.org)
220 Please visit http://sourceforge.net/projects/filezilla/
User (1.2.3.4:(none)): my_username
331 Password required for my_username
Password:
230 Logged on
ftp> get setup.exe
200 Port command successful
150 Opening data channel for file download from server of "/setup.exe"
.. and stays like this
CMD.EXE log 2:
C:\>ftp 1.2.3.4
Connected to 1.2.3.4.
220-FileZilla Server version 0.9.45 beta
220-written by Tim Kosse (tim.kosse#filezilla-project.org)
220 Please visit http://sourceforge.net/projects/filezilla/
User (1.2.3.4:(none)): my_username
331 Password required for my_username
Password:
230 Logged on
ftp> quote cwd /
250 CWD successful. "/" is current directory.
ftp> quote TYPE I
200 Type set to I
ftp> QUOTE PASV
227 Entering Passive Mode (185,7,63,37,115,151)
ftp> RETR setup.exe
Invalid command.
ftp> QUOTE RETR setup.exe
425 Can't open data connection for transfer of "/setup.exe"
ftp> get setup.exe
200 Port command successful
150 Opening data channel for file download from server of "/setup.exe"
Aborting any active data connections...
Aborting any active data connections...
Connection closed by remote host.
ftp> quote get setup.exe
Not connected.
ftp>
FileZilla log:
Status: Connection established, waiting for welcome message...
Response: 220-FileZilla Server version 0.9.45 beta
Response: 220-written by Tim Kosse (tim.kosse#filezilla-project.org)
Response: 220 Please visit http://sourceforge.net/projects/filezilla/
Command: AUTH TLS
Response: 502 SSL/TLS authentication not allowed
Command: AUTH SSL
Response: 502 SSL/TLS authentication not allowed
Status: Insecure server, it does not support FTP over TLS.
Command: USER my_username
Response: 331 Password required for my_username
Command: PASS **************
Response: 230 Logged on
Status: Logged in
Status: Starting download of /setup.exe
Command: CWD /
Response: 250 CWD successful. "/" is current directory.
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (185,7,63,37,98,242)
Command: RETR setup.exe
Response: 150 Opening data channel for file download from server of "/setup.exe"
Response: 226 Successfully transferred "/setup.exe"
Status: File transfer successful, transferred 5,120 bytes in 1 second
Why it works with FileZilla but not with Windows FTP from command-line?
More than that I would want a command that executed one time would download this file from that FTP without asking the password.
Any ideas?
Thanks.
It works in FileZilla, because FileZilla defaults to the passive FTP mode, which is more firewall/NAT friendly. The Windows FTP command-line client (ftp.exe) not only defaults to the active mode, it does not even support the passive mode, on any version of Windows. It makes it pretty useless nowadays due to ubiquitous firewalls and NATs.
Read my article about the active and passive FTP connection modes to understand why the passive mode is a must.
Use any other Windows FTP command-line client instead. Most other support the passive mode.
For example WinSCP defaults to the passive mode and there's a guide available for converting Windows FTP script to WinSCP script.
Your can specifically use a batch file (.bat) like:
winscp.com /command ^
"open ftp://my_username:password#1.2.3.4/" ^
"get setup.exe" ^
"exit"
(I'm the author of WinSCP)
220 Microsoft FTP Service
user user
331 Password required for user.
pass pass
230-Directory has 543,777,456,128 bytes of disk space available.
230 User logged in.
pwd
257 "/" is current directory.
cwd aa6
250 cwd command successful.
pwd
257 "/aa6" is current directory.
pasv
227 Entering Passive Mode (*,*,*,*,201,182).
stor sampleprogram
150 Opening ASCII mode data connection.
425 Data channel timed out.
The above is the FTP done using command-line. When I check with FTP client there is a file with 0 size created.
There's a firewall or NAT between the client and the server that prevents a connection to the port 51638 (= 201 * 2^8 + 182).
If you are not able to transfer files to/from the server from anywhere/any other FTP client, the server was most likely not set up correctly. Particularly the Windows server firewall was not configured with a rule for a data port range. Another option is that the server is not aware of its external IP address. That would be the case, if the part you obfuscated (*,*,*,*) is not the same IP address you connected to.
See my article on FTP Connection Modes for explanation of the network issues with FTP data connection.
And particularly see my article on configuring IIS FTP Server for instructions on configuring the firewall and/or the external IP address.
I have seen different topics with variations on this question but so far I was not able to resolve the problem. I am able to FTP via Firefox, Safari and Cyberduck but when attempting the same with FileZilla I get the following error:
Status: Resolving address of ftp.url.co.uk
Status: Connecting to IPADDRESS:21...
Status: Connection established, waiting for welcome message...
Response: 220-Welcome To Rumpus!
Response: 220 Service ready for new user
Command: USER EE
Response: 331 Password required
Command: PASS ***********
Response: 530 Login failed
Error: Critical error
Error: Could not connect to server
Is this a FileZilla/Firewall problem? Why can I do it so easily via other clients?
Thanks
Hey I fixed the issue by reinstalling everything. Really weird....Thanks.
I am trying to connect to an FTP server using:
ftp = Net::FTPFXPTLS.new
ftp.passive=true
ftp.debug_mode=true
ftp.connect('200.111.111.11',21)
ftp.login('Username','Pass')
ftp.chdir('inbound')
ftp.putbinaryfile("./#{filename}", "/#{filename}")
ftp.close()
For the purposes of this example 200.111.111.11 is the correct IP and 10.1.1.1 is the fake IP.
When I connect via an FTP client such as Transmit I connect fine and everything works as normal but in the transcript it states:
Cmd: PASV
227: Entering Passive Mode (10,1,1,1,47,79).
Fixing bogus PASV data address from 10.1.1.1:12111 to 200.111.111.11:12111.
Then when it tries to connect via the ruby script:
get: 425 Failed to establish connection.
When it tries to do any action like LIST or STOR because the PASV command always returns 10.1.1.1:12111.
So is there anyway to ensure the PASV command uses 200.111.111.11 and not what is sent back to it?
This seems to be more of an issue with the gem, there is a solution for it but woud take a little while to implement. In order to save time we simply switched the protocol to use SFTP which works flawlessly. (Switched both server and code)
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I have a Web Hosting Server with Full Access of Settings.
I am a Web Developer, so FTP is my daily use for updating a website.
I am using a FTP client, After setting the server information, when i tried to
connect, i recived an error while FTP client had send "MLSD" commant to server.
Here is the client LOG:
Status: Resolving address of si****.co (edited)
Status: Connecting to 74.208.***.***:21... (edited)
Status: Connection established, waiting for welcome message...
Response: 220 ProFTPD 1.3.3e Server (ProFTPD) [74.208.***.***] (edited)
Command: USER si***** (edited)
Response: 331 Password required for si*****
Command: PASS ********
Response: 230 User si***** logged in
Command: SYST
Response: 215 UNIX Type: L8
Command: FEAT
Response: 211-Features:
Response: MDTM
Response: MFMT
Response: TVFS
Response: UTF8
Response: MFF modify;UNIX.group;UNIX.mode;
Response: MLST modify*;perm*;size*;type*;unique*;UNIX.group*;UNIX.mode*;UNIX.owner*;
Response: LANG en-US*;fr-FR;it-IT;ja-JP;ko-KR;ru-RU;zh-CN;zh-TW;bg-BG
Response: REST STREAM
Response: SIZE
Response: 211 End
Command: OPTS UTF8 ON
Response: 200 UTF8 set to on
Status: Connected
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/" is the current directory
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (74,208,*,*,149,88).
Command: MLSD
Error: Connection timed out
Error: Failed to retrieve directory listing
I don't know what is going wrong. My other FTP accounts for different servers is working good on the same FTP Client Software..
I've recently stumbled upon this issue too. I found none of the solutions I found within the first Google searches to be of no use, but luckily found a solution of my own...
In Site Manager change Encryption to "Only use plain FTP", mine were previously "Use explicit FTP over TLS if available".
FYI, the previous fixes I tried were:
Firewall configuration on the router - not possible due to work network and found is was only my PC.
Change something on Remote server to do with ports - Again, not
possible and was only my PC having the fault.
Switching Filezilla from Passive to Active - Didn't work
Using SSH instead - rejected
This issue is caused by firewall blocks passive connection port range where pure-ftp deamon listens
This issue can be resolved by adding passive port range in pro-ftpd.conf file as shown below
PassivePorts 60000 62000
Make sure mentioned passive port range is opened in TCP_IN of firewall allowed incoming ports
There are two solutions to this problem
change transfer mode from default to active
Use SFTP - SSH file transfer Protocol.
Both are done in site manger window. I am using the latest version of FileZilla Client with Windows 10. Changing both of these did NOT solve my problem!
Check your ftp config file, there uncomment and allow to use passive ports 30000 thru 35000.
pasv_min_port=30000
pasv_max_port=35000
Also add these ports range to your firewall TCP_IN and TCP_OUT (30000:35000).
I had same error when I using FileZilla on ubuntu. I get rid of the error by the following steps:
1. on FileZilla, open the top tab "Site Manager" page, on top right, select the "Transfer Settings" tab.
2. On "Transfer Settings" page, there are three Transfer mode:
"Default", "Active", and "Passive". Select "Active".
3. Try to connect again.