zFTPServer Features

Active Directory Integration

Enable ftp access for Windows users. zFTPServer handles Windows or Active directory authentication automatically without the need to manually import users and sync user data. zFTPServer can also override and complement user data, offering powerful, simplified management, and superior ease of use.

The following authentication methods are included:

  • Using an Active Directory / Domain
  • Using a Windows Server (Local or Remote)

Additions to the Account management:
With this extension, accounts in zFTPServer can be connected to Windows accounts. If applied to users, it specifies certain account settings like login limits, bandwidth management, and special home directory contents. If applied to groups, it specifies defaults to all users belonging to that Windows group, making management of thousands accounts a breeze.

Seamless authentication at login
Accounts and settings in zFTPServer always takes precedence and thus zFTPServer checks if the user...
... 1. exist as a regular account in zFTPServer?
... 2. exist as a Windows-connected account in zFTPServer?
... 3. pass Windows authentication?

After aquiring the relevant user data a regular login-attempt to the ftp server is performed. This means that restrictions and security settings can be specified in zFTPServer on accounts (users and groups) that are connected to Windows-accounts and thus effectively enforce all these powerful features of zFTPServer onto the Windows-accounts trying to login to the FTP server.

Windows account impersonation
Using this extension, it is possible to run each connection as the corresponding Windows user - effectively making all Windows access rights and security restrictions apply seemlessly. This means that a folder only a certain Windows user can read can be read by the ftp server pretending to be that user after the user has successfully connected to the ftp server. Of course, this also applies to network paths (UNC), making management a breeze.

Tight integration
Also, using the special Active Directory tokens (%AD_HOMEDIR%, %AD_COMMENT%, %AD_SCRIPT%), setting up management for Windows users is really a breeze. For example, if you specify the home directory in zFTPServer for the Windows integrated zFTPServer group "Domain users" to use %AD_HOMEDIR%, all users will automatically have their own home directories.

Actually, the power of this extension goes way beyond anything currently on the market for FTP servers. Despite all this power, it is still a very elegant and easy to use solution.


A built in webserver provides easy and secure access over HTTPS. Users can access their account using a browser, no FTP client needed.

HTTPS uses a browser to transfer files. This provides a very different user experience from traditional FTP. The user will not need any FTP software. You can list, download, upload, delete and rename files using a regular webbrowser.

Make your FTP server more accessible to the users. By not requiring any extra software your service becomes more appealing by lowering the threshold. Your service will also reach people when they're behind a firewall that blocks FTP.

Link to specific folders and files.
The URI scheme lets you link to the specific folder or file that you need. Just enter the address to the server followed by the path to your file and you are sent directly to it. If you are accessing the same resource regularly, you can quickly reach it through a bookmark.

HTTPS is an encrypted service, no information is sent in clear text. This means your communication is secure.

The HTTPS service is integrated with all the features that come with zFTPServer. You get the Speed scheduler, Active Directory Integration, Events and much more.


Securely transfer files using the firewall friendly SFTP protocol. With this extension zFTPServer will support not only FTPS (SSL/TLS) but also SFTP version 3, 4, 5, and 6 of the SSH file transfer protocol.

SFTP uses SSH to transfer files. Unlike standard FTP, it encrypts both commands and data, preventing passwords and sensitive information from being transmitted in clear text over the Internet. It is similar to FTP, but because it uses a different protocol, you must use a FTP client that supports SFTP.

Public/private key authentication
Since zFTPServer can handle public/private keys for authentication, for instance generated with PuTTYGen, it is very robust and secure. The client keeps the private key secure on the client's local computer and distributes the public key so that it may be imported into zFTPServer. zFTPServer will associate this public key with a user's account and use it to verify that the client is using the correct key pair, effectively authenticating the account. zFTPServer supports any combination of allowing or requiering a specific private key from the client in addition to providing a password or not. You may even specify several public keys.


Support for fully transparent use of IPv6 in all server functions, including both full and minified addresses. zFTServer uses for instance EPSV/EPRT protocol extensions for FTP.

IPv6 (Next Generation Internet Protocol)
IPv4-addresses nearly depleted, IPv6 secures your future.
Stuck in IPv4?
- The world is growing and so is zFTPServer!


  • Fully transparent use of both IPv4 and IPv6.
  • IPv6 just works no fuzzy config needed, upgrade zFTPServer now.
  • IPv6 available in both Corporate and Enterprise editions.

Virtual Users Integration

Have zFTPServer integrate with any system for user authentication and configuration! With virtual script-based integration zFTPServer can connect to just about any data source (e.g. databases, management information systems, flat-files, ...) to verify and configure accounts. All you have to do is setup two access points; one for verifying that a user will be allowed access, and one that tells zFTPServer the user configuration (home directory structure, limitations, security settings, etc.).

User verification
This script (or program) is used to verify that a user is allowed to login. Your verification script can be supplied with any parameters you choose, but it's recommended that you at least include the two tokens "%USERNAME%" and "%PASSWORD%" to properly verify the user. Then simply use the standard return value to indicate to zFTPServer if this particular user will be allowed access into your system; return value of 0 means access is granted, and any other value denies access.

User configuration
This script (or program) is used to configure the user's setup. Your configuration script can be supplied with any parameters you choose, but it's recommended that you at least include the token "%USERNAME%" to properly know which user is requesting it's configuration. Then simply return a complete user setup to standard out, specifying anything you need like home directory structure, speed- or login-limitations, special security settings, etc. just like a regular account setup file.

Message Customization

Customize messages sent from the FTP Server to the connecting user. This enables the user to, for example, get information of loading statistics, server information and date and time of commands. For more advanced options, tokens and also to get scripting and external program execution ability buy the "Events and Messages"-extensions.

The following tokens are available:

Date / Time:

  • %YYYY% -Current year
  • %MM% -Current month, 2 numbers (01-12)
  • %M% -Current month (1-12)
  • %DD% -Current day, 2 numbers (01-31)
  • %D% -Current day (1-31)
  • %hh% -Current hour, 2 numbers (00-23)
  • %h% -Current hour (0-23)
  • %mm% -Current minute, 2 numbers (00-59)
  • %m% -Current minute (0-59)


  • %TOTAL_DOWNLOADED% -Total amount of data downloaded from the server
  • %TOTAL_UPLOADED% -Total amount of data uploaded to the server
  • %TOP_n_DOWNLOADERS% -Shows a list of the n top downloaders (n i explicitly defined, eg. %TOP_15_DOWNLOADERS% returns 15 largest downloaders)
  • %TOP_n_UPLOADERS% -Shows a list of the n top uploaders (n i explicitly defined, eg. %TOP_7_UPLOADERS% returns 7 largest uploaders)
  • %TOP_DOWNLOADER_n_USERNAME% -Shows the username of the n:th top downloader (n i explicitly defined, eg. %TOP_DOWNLOADER_8_USERNAME% returns the 8:th top downloader)
  • %TOP_DOWNLOADER_n_DOWNLOADED% -Shows the amount of data downloaded by the n:th top downloader (n i explicitly defined, eg. %TOP_DOWNLOADER_8_DOWNLOADED%)
  • %TOP_UPLOADER_n_USERNAME% -Shows the username of the n:th top uploader (n i explicitly defined, eg. %TOP_UPLOADER_14_USERNAME% returns the 14:th top uploader)
  • %TOP_UPLOADER_n_UPLOADED% -Shows the amount of data uploaded by the n:th top uploader (n i explicitly defined, eg. %TOP_UPLOADER_14_UPLOADED%)


  • %CONNECTIONS% -Shows the current number of connections to the server
  • %USERS_LOGGED_ON% -Shows the current number of users logged on to the server
  • %SW_NAME% -Current server program name
  • %SW_VERSION% -Current server program version
  • %SW_BUILD% -Current server program build


  • %IP% -IP of the current user
  • %USERNAME% -Username of the current connected user

Events and Messages : Reactive

Have zFTPServer notify users or initiate actions when events occur using powerful scripting facilities! This extension allows zFTPServer to enforce user scriptable rules and policies such as virus checks on uploaded files, automatically transform between file formats, and to send notifications about special events.

The following events are included:

  • OnConnect -when a user connects
  • OnQuit -when a user sends QUIT
  • OnDisconnect -when a user disconnects
  • OnLoggedIn -when a user successfully logs in
  • OnChangeDirectory -when a user change directory
  • OnCreateDirectory -when a directory is created
  • OnRemoveDirectory -when a directory is removed
  • OnListDirectoryStart -when a file listing starts
  • OnListDirectoryEnd -when a file listing ends
  • OnDownloadStart -when a file download starts
  • OnDownloadEnd -when a file download ends
  • OnUploadStart -when a file upload starts
  • OnUploadEnd -when a file upload ends
  • OnRemoveFile -when a file is removed
  • OnRename -when a file or directory is renamed

The following tokens are included:


  • %EXECUTE(cmd)% -executes an external command (cmd), that may consist of other tokens and returns the result


  • %GROUPS% -a single-quoted, space-separated list of groups that the current user is member of
  • %FTP_DIRECTORY% -FTP directory of current user
  • %LOCAL_DIRECTORIES% -a single-quoted, space-separated list of local directories of current FTP directory
  • %FTP_FILENAME% -last file accessed by user (FTP path)
  • %LOCAL_FILENAME% -last file accessed by user (local path)
  • %FTP_FILENAME_NEW% -new name of last file accessed by user (FTP path), used only during rename events
  • %LOCAL_FILENAME_NEW% -new name of last file accessed by user (local path), used only during rename events
  • %TRANSFERRED% -bytes transferred by user during last command
  • %FILESIZE% -size of last file accessed by user

Events and Messages : Proactive

Have zFTPServer react to events before they happen! With this extension you can specify before-scripts that limits access based on date/time, downloaded files or even information stored in external databases. Together with Reactive you have a full-fledged Integration Server. Your imagination is the limit!

The following events are included:

  • BeforeConnect -before a user connect
  • BeforeLoggedIn -before a user is authenticated
  • BeforeChangeDirectory -before a user change directory
  • BeforeCreateDirectory -before a directory is created
  • BeforeRemoveDirectory -before a directory is removed
  • BeforeListDirectory -before a file listing
  • BeforeDownload -before a download starts
  • BeforeUpload -before an upload starts
  • BeforeRemoveFile -before a file is removed
  • BeforeRename -before a file or directory is renamed

The following tokens are included:


  • %EXECUTE(cmd)% -executes an external command (cmd), that may consist of other tokens and returns the result


  • %GROUPS% -a single-quoted, space-separated list of groups that the current user is member of
  • %FTP_DIRECTORY% -FTP directory of current user
  • %LOCAL_DIRECTORIES% -a single-quoted, space-separated list of local directories of current FTP directory
  • %FTP_FILENAME% -last file accessed by user (FTP path)
  • %LOCAL_FILENAME% -last file accessed by user (local path)
  • %FTP_FILENAME_NEW% -new name of last file accessed by user (FTP path), used only during rename events
  • %LOCAL_FILENAME_NEW% -new name of last file accessed by user (local path), used only during rename events
  • %TRANSFERRED% -bytes transferred by user during last command
  • %FILESIZE% -size of last file accessed by user

Speed Scheduler

Schedule server activity to idle time when you are away from the computer. Speed Scheduler allows administrators to throttle upload and download speeds limits based on rule sets and time constraints. Rules can of cource be ignored for local network access.

With Speed Scheduler you won't have to turn off zFTPServer during gaming sessions with your friends or suffer poor download speeds due to massive uploads. Speed scheduler allows multiple prioritized rules to be created so that speed limitations can be set to suite your every need.

Virtual Filesystem

Access directories, network shares and NAS-units seamlessly using FTP. zFTPServer can dynamically mount any disk or directory for any user or group. The virtual file system also allows administrators to map several directories resident on different servers or computers into a virtual directory accessible for users when they log in.

SSL/TLS Support

Secure your data transfers. Integrated encryption support using cutting edge standards (up to 256 bits AES) means zFTPServer is up for the task of securely managing business critical data. Support for professionally signed encryption certificates (like Verisign certificates) and self-signed keys are of course included.


zFTPServer can automatically detect and block multiple connection attempts to for instance avoid brute force attacks.

Advanced IP-Access Management

Access rights with respect to IP adresses or domain names may be specified, granting or denying access from specific locations.

Advanced Account Expiration

Accounts expire on fulfillment of specific criteria, including date, after a specified number of days/weeks/months has passed, after a specified number of downloads have been performed, and more.

Powerful User & Group Account Management

Users and Groups may join multiple groups simultaneously. zFTPServer is flexible and innovative user and group rights management system coupled with scripting and other management features is the administrators dream.

UAC - User Account Control

Fully UAC compatible means zFTPServer runs without hazzle in Windows Vista, Windows 7 and Windows Server 2008.

Minimal Resource Footprint

zFTPServer is designed with minimal resource footprint in mind from the very beginning. Threading, separating the administration application from the server application, and careful allocation and deallocation of memory with no memory leakages, are some of the design choices and strategies implemented to minimize performance costs.

Automatic Updates

Get the latest version automatically or handle updates manually!

Scripting Friendly (for Expert Users)

Powerful scripting features means administrators or developers can access and control zFTPServer or even include zFTPServer as part of a data management or business support system. zFTPServer supports standard TCP/IP connections, making scripts easy to develop (e.g. create new accounts via php). Sample scripts can be obtained here

Remote Administration

Administer zFTPServer on the move! The server and the administrative interface are separated into two different applications enabling remote maintenance and administration of the server. Connect to your zFTPServer and configure it from anywhere in the world.

Run as System Service

Run your zFTPServer automatically as a system service (WindowsNT/2000/XP/2003) or in application mode.


Heavily threaded, each user login, download and upload operation runs threaded. This means the OS can distribute threads over several processors or cores. Strict memory allocation, deallocation, and resource control also means proper deallocation after completion of each operation.

Optional Tray Applet

To optimize performance, zFTPServer runs either as a regular application with a tray applet OR (preferrably) as a system service. Running as a service we have chosen not to have a tray applet running. However zFTPServer Administration that connects, natively or remote, to your server minimizes to the tray with an active icon giving you an updated overview of the server state should you like.

Registry Free (Optional)

zFTPServer and zFTPServer Administration can run directly from a USB-stick on the fly, as zFTPServer, running in application mode makes no registry entries.


Need support for foreign languages like Chinese and Russian. zFTPServer supports UTF-8 mode to allow special (multibyte) characters.

Ultra Fast Transfer

World class performance with minimal system resource allocation! More than 11MB/sec. on average on 100MBit LAN means zFTPServer outperforms most windows ftp servers. Tests with 500 concurrent active users have been performed without any performance concerns (on a standard desktop PC).

Passive Mode Host/IP

Need to pass through a firewall? zFTPServer supports active and passive mode connections allowing administrators to specify both IP-adresses or host names for servers with dynamic ip adresses and/or behind firewalls (e.g. myserver.no-ip.com)

Upload Balancing

zFTPServer supports automatic upload balancing for virtual directories. Uploaded files end up where there is space.

Site-To-Site (FXP)

fxpzFTPServer supports allowing or disallowing site-to-site transfers.

Multilingual Interface

zFTPServer Suite is currently available in English, Swedish, Italian, Traditional Chinese (Taiwan), Portuguese (Portugal), Slovak, Hungarian, German, French, Portuguese (Brazil), Simplified Chinese (P.R.C.), Czech, Russian, Ukrainian, Spanish (Traditional), Norwegian (Bokmal).



A Windows based FTP server with focus on clever Active Directory integration and powerful, effortless administration.

Active Directory Integration

With clever integration, accounts or groups in zFTPServer can be connected to Windows or AD accounts or groups. You can specify default or specific settings for all users belonging to a Windows or AD group. Windows account impersonation effectively makes all Windows access rights and security restrictions apply seamlessly.

Easy Remote Administration

The server and the administrative interface are separated into two applications. Connect to your zFTPServer and configure or administrate it securely from anywhere in the world!

Full-fledged Integration Server

Powerful account management together with reactive and proactive scripting and virtual users makes zFTPserver a fully-fledged integration server. You can have zFTPserver automatically test data integrity, import data into the business system, notify the controller when branch offices upload the latest sales figures and verify virtual users with any system.

Reactive and Proactive Scripting

zFTPServer enforces user scriptable rules and policies such as virus checks on uploaded files, automatic transformations between file formats and notifications on special events. Specify before action-scripts that limits access based on e.g. date/time, downloaded files or even information stored in external databases.

zFTPserver uses the FTP, SFTP, FTPS, TFTP and HTTPS protocols. You can for example turn off FTP and only allow SFTP connections if you wish! zFTPServer also supports security certificates, strong encryption and IPv6.

Additionally, with public/private key authentication you can automate logins and set up an entirely different level of security!

For the past 10 years zFTPserver has been downloaded over 3 million times from more than 150 countries in 6 continents.[Testimonials]

"We have converted from a competitor's ftp server program, not only have we saved money, but we have deployed a superior product. zFTPServer is easy to setup and administer and consumes less system resources than any other competitive product."
Kurt Stoffer, WeGotYourBackup.com

"Teradyne sells automated functional test equipment for both commercial and aerospace applications. The zFTPServer is used to provide data to the module under test."
Gerald Nagle, Teradyne, Inc.

"We had a customer that needed a flexible and easy to manage FTP server, zFTPServer Suite was absolutely perfect. The customer is happy, we are happy."
Chris Terry, Nextshore LLC

"As a web developer I have used it as a personal ftp server to have graphic designers get files to my local machine. Really intuitive and easy to use, a very convenient and quick solution to FTP. Thanks!"
Cito Giulini, web101dev

"Fast change of group memberships and the opportunity to use virtual directories. ...there is not another product for windows."
Juergen, ERF

"In Russia company's rarely pay's for software, but I go to our chef and say: we need to buy this."
Michail Okounev, MOSSHTAB

Download zFTPServer

zFTPServer Editions

  Free Personal Professional Corporate Enterprise
Virtual file system
Unicode and UTF-8
Run as system service
Support for multi-core & -processor
Passive mode (host and IP based)
Customized messaging
Users & inheritable group rights
Remote administration
Encrypted remote administration  
Automatic updates  
FTPS (SSL/TLS support)  
Upload balancing    
IP & domain access control    
FXP Site-to-site    
Speed scheduling    
Events handling-reactive    
Events handling-proactive      
Active Directory integration      
SFTP - with public/private key authentication        
Virtual users - script-based authentication integration        
Max accounts & connections 5 5 25 200 Unlimited

Note: Each purchased licence is only valid for one instance of zFTPServer Suite

* License for one year of updates included with each purchase (NOTE: the software itself never expires, only the ability to update expires)

Installation instructions

DOWNLOAD To simplify, all functionality is included in the zFTPServer Suite installation file. Features are then unlocked using licence files which you buy online. No extra downloads are needed!

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