Free ssh secure file transfer software for linux

Fast Secure File System exports existing directories securely over the network, letting users store and retrieve encrypted data in a scalable and transparent way. FSFS is written in C and works on GNU/Linux systems on x86 and PPC architectures, with help from FUSE and OpenSSL.
File systems are easily the most evident, from the point of view of users, component of an operating system. Through file systems it is possible to organize data in a wide variety of ways, and access resources through a common interface.
Users can nowadays not only store and retrieve documents, but also find information on running processes and system settings (through ProcFS), access and manipulate e-mail (for example with GmailFS), or perform several other operations.
In several circumstances and scenarios it is desirable to protect stored files and directories from manipulation by unknown or malicious users: financial or health-related data, confidential documents, or any kind of personal or sensitive data may need to be stored securely, in such a way that it can not be examined or modified freely by third parties.
Most file systems do not take action in this sense, and external cryptographic utilities are sometimes employed to secure data before storage. While this can be a perfectly secure solution, it is not transparent to users.
Distributed file systems propose efficient ways of accessing data remotely as if it resided on the local machine; when it comes to dealing with securely stored data as in the examples above, care must be taken to preserve confidentiality and integrity also during network transfer.
Not all distributed file systems accomplish this task, weakening the overall security of the system, or do so inefficiently, making it inconvenient for users.
FSFS is a secure, distributed file system in users space, written in C with much help from FUSE and OpenSSL. It lets users store and retrieve data securely and transparently, knowing that it is protected both on permanent storage devices and while in transit over the network.
It is also concerned with scalability, therefore separates data cryptography from the server, leaving it to the clients; this approach is similar to the one used in CFS, and opposite to those taken on by other secure file system solutions (like NFS on top of IPsec).
FSFS is written as a pair of user space daemons that act as client and server. Because of this, it needs no kernel support (unlike NFS over IPsec), save the FUSE loadable kernel module on clients, included in Linux since 2.6.14; servers dont use FUSE and depend only on user space OpenSSL libraries.
Servers export an existing file system (of virtually any kind) to clients over the network through two separate channels: a TLS connection set up with OpenSSL, and a clear channel. Requests from the clients to the servers are sent via the TLS socket, thus they are encrypted and authenticated, according to TLS v1 specifications, by the channel itself and decrypted on receipt, as they are usually very short and the relevant cryptography does not constitute a great overhead; simple server replies undergo the same process.
Cryptography in this case happens at both ends of the transmission.
In a distributed file system, large amounts of data may be transferred between clients and servers, thus encrypting and decrypting everything may become too cumbersome for both parties, and as more clients are added to the system the server may severely lose performance; moreover, file data should be stored encrypted anyway, so the cryptography could be moved to the clients, in such a way that each encrypts data before a write operation sends it over the network to the server, and decrypts it after a read retrieves it.
This way servers only deal with TLS details and can concentrate on serving client requests by doing the relevant I/O on the underlying, "physical" file system. As the data is already encrypted, it does not need to go through the TLS channel and the corresponding overhead, but can be sent via the clear channel, provided the messages are authenticated.
Enhancements:
- This release fixes two bugs. One bug related to socket creation and would cause problems on some systems (namely OpenSUSE 10.2). The other bug related to server configuration creation when using the Python configuration utilities. Users dont need to upgrade to this release if theyre not experiencing problems or are not using the Python configuration utilities.

Secure Data Manager project is a manager for passwords and other private data.
Secure Data Manager (SDM) is a full-featured password manager application written entirely in Java (so it can run on Unix or Windows). It encrypts logins and other private information for Web sites, computers, credit cards, etc.
Main features:
- Many great features and more coming each month based on user feedback!
- No limit to how you use the product or how often!
- Trusted since you and everyone else can see the code that protects your passwords -- keeping the application clear of any trojans or bad business practices.
- Open source -- so if you know how to write code, you can add any feature you want!
- Free.

SSH Enchanter is a small library for scripting SSH sessions.
Enchanter is a small library that helps you script SSH sessions in a manner similar to Expect. It comes in multiple flavors that support different scripting languages including Python, Ruby and BeanShell. This tool requires Java 5 or greater.
Here is an example script, date.py, that connects to a remote SSH server and gets the output of the date command:
ssh.connect(myserver, myusername);
ssh.waitFor(:~>);
ssh.sendLine(date);
print Server date is +ssh.getLine();
ssh.disconnect();
To execute this script with the script and enchanter jar in the current directory, run
java -jar enchanter-python-VERSION.jar date.py
Main features:
- Different builds to support Python, Ruby, and BeanShell scripts
- Learning Mode to automatically build scripts based on observing an interactive SSH session
- Supports public key and password-interactive authentication
- API similar to the ZOC telnet/SSH client
Enhancements:
- This release fixes the case when a missing DSA or RSA key wouldnt properly fail over to password-based authentication methods.

Trustix Secure Linux is a Linux distribution for servers with focus on security and stability.
Trustix Secure Linux was specifically designed for the server market. With a focus on security and stability, the whole system benefits from a fully automatic update agent known as SWUP, eliminating the most critical issue of server security - Patch management.
Enhancements:
- The Comodo Trustix team is proud to announce the release of Trustix Secure Linux 3.0.5, an update to the previous Tikka Masala. The new release is named Mirch Masala to describe the new interesting changes associated. This release has its major change from the previous release of 3.0 with the re-introduction of Anaconda as the preferred choice of installer. In addition, most packages have been upgraded to their latest versions upon customer requests. The core updates available are: kernel 2.6.19.7, PostgreSQL 8.2.3, MySQL 5.0.27, CP+ 3.3, Samba 3.0.24.

Secure FTP is a client application that allows for a 128-bit encrypted secure connection to be made to a server that supports FTP over SSL (or FTPS).
The application can be run via its graphical user interface (GUI) or from the command-line interface (CLI), allowing for headless (scriptable) operation. This makes Secure FTP a great option for both novice and advanced users.
The client is fully RFC 2228 compliant and offers both types of SSL connection options: explicit and implicit, which means more server compatibility.
Secure FTP is free to use for noncommercial use. Those wishing to use the client for commercial purposes are granted a license free of charge for 30 days.
The client is supported on Windows, Mac OS X, and any Unix platform where a Java 2 runtime environment (version 1.4+) is present. It was written in 100% pure Java.
Enhancements:
- The software was translated into French.
- Minor bug fixes and library updates were done.

Secure Login provides a login extension similar to Operas Wand login.

It uses the built-in password manager, but deactivates the prefilling of login forms.
Instead, you are now able to login with one click or a keyboard shortcut (ALT+N).
Just add the Secure Login toolbar button to your toolbar, or use the provided statusbar icon.
If you hover over one of the icons, a tooltip is shown, displaying the login url and the number of available logins (users).
For more than one user or login forms on the current page a selection prompt is displayed on login.
You have the option to play sound notifications (*.wav) for found login data on the current page or when logging in.
All the options can be changed using the Secure Login settings menu or the statusbar icon context menu.

Secure Login provides you with a number of Security enhancements and helps protecting you from phishing:

Disabling the prefilling of login forms prevents malicious JavaScript code to automatically steal your login data.
This is due to the fact that no login data is inserted in form fields before the user clicks on the login button or logs in using the keyboard shortcut.
To make sure you login to the right website, the second level domain of the login url is compared to the second level domain of the current page.
If they do not match a dialog prompt is displayed before login.

SecureLogin provides you with an optional setting to protect you from all JavaScript code during login.
This can prevent cross-site scripting (XSS) attacks without having to deactivate JavaScript completely.
If you enable this option, your login data will never be inserted in any form fields nor will the login form be submitted.
Instead your credentials will be sent to the login page using internal Firefox methods.
Not all login forms will work this way, e.g. not those using JavaScript routines.
Therefore, you can add such websites to an exception list.

Fast Data Transfer is an application for efficient data transfers that is capable of reading and writing at disk speed over wide area networks (with standard TCP).
It can be used to stream a large set of files across the network, so a large dataset composed of thousands of files can be sent or received at full speed, without the network transfer restarting between files.
The project is written in Java, runs an all major platforms, and is easy to use.
Main features:
- Streams a dataset (list of files) continuously, using a managed pool of buffers through one or more TCP sockets.
- Uses independent threads to read and write on each physical device
- Transfers data in parallel on multiple TCP streams, when necessary
- Uses appropriate-sized buffers for disk I/O and for the network
- Restores the files from buffers asynchronously
- Resumes a file transfer session without loss, when needed