Pasv Error
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Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. PASV command failed Started by Roland-KS , Jun 11 2003 01:44 PM Please log in 227 entering passive mode ftp to reply 3 replies to this topic #1 Roland-KS Roland-KS Members 7 posts Location:Kassel, 227 entering passive mode filezilla Germany Posted 11 June 2003 - 01:44 PM PASV command failed: Every Connection the Same Error ? ----Log----- Resolving host name
227 Entering Passive Mode Connection Timed Out
proxy.host1-ks.de... Resolving host name ftp.smartftp.com... Connecting to Proxy (proxy.host1-ks.de). Connected to Proxy (proxy.host1-ks.de) -> IP: 172.168.0.11 PORT: 21. Socket connected waiting for login sequence. 220-InterScan FTP VirusWall NT 3.51 (Proxy Mode), PASV mode, Virus
227 Entering Passive Mode Ftp Connect Connection Refused
scan on 220 Secure Gateway FTP server ready. USER anonymous@ftp.smartftp.com roland.kp 331 Password required for destination user 'anonymous'. PASS (hidden) 332 Enter Gateway Password (use the 'account
1970's  decades before most networks were protected by strict firewalls that drop incoming packets first, ask questions later.
How To Check If Port 21 Is Blocked On Your Computer
The FTP was designed for an environment where clients and servers error pasv command failed filezilla interact with each other with a minimum of restriction. Additionally, the FTP was designed to operate filezilla pasv command failed over communications channels where packets travel directly to their destination, and not in todayÂs environment where there may be a transparent intermediary that is responsible for sending the https://www.smartftp.com/forums/index.php?/topic/5793-pasv-command-failed/ packets to and from a host on a private network. Contents The Problems The Two Types of Data Transfers - Active (PORT) and Passive (PASV) Example Sessions Using Active and Passive Data Transfers Why PORT Poses Problems for Routing Devices Why PASV Poses Problems for Firewalls Why PASV Poses Problems for FTP Servers on http://www.ncftp.com/ncftpd/doc/misc/ftp_and_firewalls.html Internal Networks Why PASV Poses Problems for FTP Servers behind Load-Balancing Routers Deadlock - When there are Restrictive Firewalls on Both Sides Problems when the FTP Server is Listening on a Non-Standard Port Number Problems caused by the firewall prematurely timing out a valid FTP session Final Words The Problems [Contents] The primary problems that the FTP poses to firewalls, NAT devices, and load-balancing devices (all of which will simply be referred to as Ârouting devices and not "routers" since gateway machines generally aren't problematic) are: Additional TCP/IP connections are used for data transfers; Data connections may be sent to random port numbers; Data connections may originate from the server to the client, as well as originating from the client to the server; Data connections destination addresses are negotiated on the fly between the client and server over the channel used for the control connection; The control connection is idle while the data transfer takes place on the data connection. The ramifications fo
Passive FTP Example Other Notes Summary References Appendix 1: Configuration of Common FTP Servers Appendix 2: Firewall Configuration Guide Introduction One of the most commonly seen questions when dealing with firewalls and other Internet connectivity issues is the difference between active and passive FTP and how best to support either or both of http://slacksite.com/other/ftp.html them. Hopefully the following text will help to clear up some of the confusion over how to support FTP in a firewalled environment. This may not be the definitive explanation, as the title claims, however, I've heard enough good feedback http://askubuntu.com/questions/592577/vsftpd-pasv-configuration-set-up-yet-still-not-working and seen this document linked in enough places to know that quite a few people have found it to be useful. I am always looking for ways to improve things though, and if you find something that is not quite 227 entering clear or needs more explanation, please let me know! Recent additions to this document include the examples of both active and passive command line FTP sessions. These session examples should help make things a bit clearer. They also provide a nice picture into what goes on behind the scenes during an FTP session. Now, on to the information... The Basics FTP is a TCP based service exclusively. There is no UDP component to FTP. FTP is an unusual service in 227 entering passive that it utilizes two ports, a 'data' port and a 'command' port (also known as the control port). Traditionally these are port 21 for the command port and port 20 for the data port. The confusion begins however, when we find that depending on the mode, the data port is not always on port 20. Active FTP In active mode FTP the client connects from a random unprivileged port (N > 1023) to the FTP server's command port, port 21. Then, the client starts listening to port N+1 and sends the FTP command PORT N+1 to the FTP server. The server will then connect back to the client's specified data port from its local data port, which is port 20. From the server-side firewall's standpoint, to support active mode FTP the following communication channels need to be opened: FTP server's port 21 from anywhere (Client initiates connection) FTP server's port 21 to ports > 1023 (Server responds to client's control port) FTP server's port 20 to ports > 1023 (Server initiates data connection to client's data port) FTP server's port 20 from ports > 1023 (Client sends ACKs to server's data port) When drawn out, the connection appears as follows: In step 1, the client's command port contacts the server's command port and sends the command PORT 1027. The server then sends an ACK back to the client's command port in step 2. In step 3 the server initia
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top vsftpd PASV configuration set up, yet still not working up vote 0 down vote favorite So, I've been researching FTP/FTPS, and have been trying to set up a working FTPS server. To use FTP(S), I've been using the service vsftpd, and the my server is an amazon EC2 instance running Ubuntu 14.04. masq@ftp:~$ uname -a Linux ftp 3.15.0-031500rc2-generic #201404201435 SMP Sun Apr 20 18:36:18 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Now, the configuration file seems pretty straightforward in setting up. HOW-EVER, things.. aren't working properly... for some reason... The problem I'd like addressed in this thread is the problem of passive vs. active configuration. Now, I've enabled pasv mode in the config file. I've specified some ports for pasv to utilize, and I've specified the address that it's on... etc. (I'll post my file's config below) and yet... I still get this error when i issue an "ls" command over ftp! Here is an example run of that (I'm just FTPing to localhost so i know that firewall stuff isn't getting in the way (that does ensure that firewall doesn't get in the way... right?!)): masq@ftp:~$ ftp localhost Connected to localhost. 220 (vsFTPd 3.0.2) Name (localhost:masq): john 331 Please specify the password. Password: 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp> ls 200 PORT command successful. Consider using PASV. 150 Here comes the directory listing. -rw-rw-r-- 1 1000 1000 0 Feb 18 04:55 random 226 Directory send OK. ftp> passive Passive mode on. ftp> ls 227 Entering Passive Mode (xxx,xxx,xxx,xxx,46,229). ftp: connect: Connection refused ftp> and here is my config file... # allow anyone to connect? anonymous_enable=NO # is it turned