server security standards
Transferring files securely FTPS
FTPS is a protocol for file transfer using SSL to secure orders and data transferred between the client and server. Secure Sockets Layer (SSL) and its successor, Transport Layer Security (TLS) are cryptographic protocols providing communications Secure Internet for things such as web browsing, e-mail, FTP and other data transfers. SSL was developed by Netscape Communications Corporation to provide security and Internet privacy. Because of the widespread use of SSL, may be considered as a "de facto standard.
FTPS support encryption of the channel as defined in RFC 2228. With FTPS, transfer of data is in a manner to allow both parties to authenticate each other and to prevent eavesdropping, manipulation and counterfeiting in messages exchanged.
How do FTPS
When establishing a secure SSL session, the following steps occur:
1. Authenticate the server to the client.
2. Allow the client and server to select encryption algorithms, or numbers that much support.
3. Optionally authenticate the client to the server.
4. Public use encryption techniques to generate key shared secrets.
5. Define a SSL encrypted connection.
The authentication server allows a user to confirm the identity a server. SSL client software can use standard techniques of public key cryptography to check whether a server certificate and identification number public are valid and have been issued by a certification authority (CA) listed in the client list of trusted CA. This confirmation can be important if the user, for example, send a card number online credit and want to verify the identity of the receiving server.
The client encrypts the secret premaster server public key. Only the corresponding private key can correctly decrypt the secret, so that the client has some assurance that the identity associated with the public key is actually the server with which the client is connected. Otherwise, the server can not decrypt premaster the secret and can not generate the symmetric keys required for the session and the session closes.
Public Key Cryptography
Public key cryptography ensures private and secure transmission of data through two processes: authentication and encryption. Authentication ensures that the sender of data is exactly what he said. Encryption, the most effective way to achieve data security is the process of translating data into code. To show the difference between 56-bit, 128 bit and 256-bit encryption, consider the following example:
Sending information in clear is like sending a postcard by mail - the contents are visible to anyone who wants to see. Using this analogy, 56-bit is like sending information in a white envelope and a 256-bit encryption is like that captures data in a lead-lined, Titanium 6 inch thick Security is transported by an armored tank with a convoy of a hundred armed guards.
Public and private keys
Authentication and encryption using digital codes called "keys" - a private key and public. The public key used to encrypt messages and private key same is used to decrypt them. Important, however, that despite their symbiotic association is virtually impossible to deduce the private key if you know the public key.
The public key has two main functions: validation and encryption of data. As its name suggests, the public key is released in any party seeking one of these two functions.
The private key on the other hand, is required for encryption data (also called signature) and decoding. Unlike the public key, this key is closely guarded.
Digital Certificates
Digital certificates are a standard way to join a public key to a name. To provide a digital certificate, the sender Data must request a digital certificate from a certification authority (CA), VeriSign. Thus, the CA acts as a neutral third party that verifies the data sender is who or what are supposed to be. After checking this information, the May issue a CA certificate key public for the parties to use. The standard most commonly used for X.509 digital certificates. A universal standard for this type is necessary because in the purpose of sending encrypted data, know the recipient's public key.
Abstract
FTPS should be used when you need to transfer sensitive or confidential data between a client and a server that is configured to use SSL for secure transactions.
About the Author
Zephyr Development Corporation is a highly respected developer of advanced terminal emulation and host integration solutions for Microsoft Windows. More about Zephyr's PASSPORT and FTPS Secure SSL File Transfer:
http://www.zephyrcorp.com/ftps.htm
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