Security Accessible Through Accessibility
The e-commerce thrust around the globe has generated the need for secure Internet transactions. The two key fundamentals of secure business dealings are authentication and authorization. Hence, access control deployment is on the rise, and their market is growing rapidly. The access control equipments help in constructing centralized access control. These products authenticate the user & then authorize them to access resources for which permission has been given. But this is limited to a certain zone beyond which the product loses its network. Systems of access control are becoming quite common & their uses are growing, both in public and private sectors. Thus, both of these sectors are deploying access control equipments for various applications ranging from keeping a record of time and attendance to physical access. This has largely helped in reducing the crime and fraud cases that takes place in the society. The low-cost resolution technology ascendancies, magnetic stripes & card systems for automatic identification are rapidly gaining popularity. Thus, the access control systems market is growing rapidly and money is spinning like never before. Web access control has two fundamental design models. The first model is known as the “plug-in” model. In this particular model, software based programs are installed in every Web server so as to protect the product. The second model is called the “proxy” model. This model uses one or more than one proxy servers so as to regulate Web accessibility. A single proxy server takes care of numerous Web servers, however, recommendation is given to use two for redundancies. To avail further information on Access Control Technologies, their market potentiality and future forecast, read the report: “Access Control Technologies and Market Forecast World Over (2007)” published by RNCOS at: http://www.rncos.com/Report/COM19.htm RNCOS is an industry leader in the field of online business research. We specialize in industry research on various business verticals. To read our other reports, visit us at: - http://www.rncos.com/Report.htm or email us at info@rncos.com To get the latest news visit our newly launched Blog section at http://www.rncos.com/Blog/ We provide global business information for industry research, business consulting, & bring reputed companies and firms to us for business enhancement solutions.
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FTP Servers and Security - Three methods that Secure FTP Servers use
FTP (File Transfer Protocol) has been the basis for file transfer since the dawn of the internet. The truly remarkable feature about FTP was that it was operating system independent. Files could be smoothly transferred between Unix, Windows and any other operating system. The other cool feature about FTP was that a simple validation mechanism consisting of a username and a password could be used to limit access to files. However, the actual data itself was transferred unencrypted and it was easy to intercept and listen in on an FTP connection. The internet itself had very minimal security built into it. Consisting of many smaller independent networks that stretched across the globe, the path that a data packet took to get from point A to point B was unpredictable. With the popularity of the internet, it became essential to be able to transmit many types of critical data with some amount of security. Netscape Communications solved the security problem on the internet by developing the Secure Sockets Layer Protocol (SSL) which used public key cryptography to encrypt data transmitted over the internet. This is still the widely accepted security mechanism and is implemented by all web browsers. FTPS Secure File Transfer Modifications to the FTP protocol were proposed to incorporate the use of SSL for encrypting file transfers over the internet. The modified mechanism is referred to as FTPS. In order to maintain backwards compatibility with the original file transfer protocol, an FTPS connection could either be explicit, where the connection between the client connection and the server starts out as regular FTP and then negotiates a secure connection, or implicit where the connection starts out being encrypted. HTTPS Secure File Transfer Since a web browser is already capable of public key cryptography, simple downloads and uploads can be performed directly through a web browser using the HTTPS protocol. This means that special FTP Client software is not required. SFTP Secure File Transfer The Secure Shell protocol also known as SSH was developed by Tatu Ylonen to enable secure access to remote shells using public key cryptography and replace Telnet and other non secure shells. This protocol has since evolved to also support a file transfer mechanism known as SFTP. The main advantage of this mechanism is that it did not require the opening of an additional data channel connection for transferring files. All of these three methods of secure file transfer are based on public key cryptography and all of them are equally capable of securing the transfer of critical files across the internet. The only drawback of these methods is that there is a data overhead associated with encrypting files. There is also a performance overhead associated with encrypting the files at the source and decrypting them at the destination. Because of this, system administrators sometimes use regular FTP for file transfers within a secured internal network. However, for transferring files over the internet, this is a small price to pay in exchange for the guarantee that sensitive files reach their destination without being intercepted or tampered with.Okay, you now know about the three types of secure ftp servers. If you are looking for a secure FTP server to run on your windows system that can support all three secure file transfer mechanisms, be sure to visit <a href ="http://www.sysax.com/">http://www.sysax.com/</a> and download <a href ="http://www.sysax.com/download.htm?c=48#sysaxserv">Sysax FTP Server</a>
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