Network security protocols

Network security protocols are a type network protocol that ensures the security and integrity of data in transit over a network connection. Network security protocols define the processes and methodology to secure network data from any illegitimate attempt to review or extract the contents of data.

Network security protocols are primarily designed to prevent any unauthorized user, application, service or device from accessing network data. This applies to virtually all data types regardless of the network medium used.

Network security protocols generally implement cryptography and encryption techniques to secure the data so that it can only be decrypted with a special algorithm, logical key, mathematical formula and/or a combination of all of them. Some of the popular network security protocols include Secure File Transfer Protocol (SFTP), Secure Hypertext Transfer Protocol (HTTPS) and Secure Socket Layer (SSL).

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• Applications 

  Once an afterthought in software design, security is becoming an increasingly important concern during development as applications become more frequently accessible over networks and are, as a result, vulnerable to a wide variety of threats. Security measures built into applications and a sound application security routine minimize the likelihood that unauthorized code will be able to manipulate applications to access, steal, modify, or delete sensitive data. Actions taken to ensure application security are sometimes called countermeasures. The most basic software countermeasure is anapplication firewall that limits the execution of files or the handling of data by specific installed programs. The most common hardware countermeasure is a router that can prevent theIP address of an individual computer from being directly visible on the Internet. Other countermeasures include conventional firewalls,encryption/decryption programs, anti-virus programs, spyware detection/removal programs and biometric authenticationsystems.

  Application security can be enhanced by rigorously defining enterprise assets, identifying what each application does (or will do) with respect to these assets, creating a security profile for each application, identifying and prioritizing potential threats and documenting adverse events and the actions taken in each case. This process is known as threat modeling. In this context, a threat is any potential or actual adverse event that can compromise the assets of an enterprise, including both malicious events, such as a denial-of-service (DoS) attack, and unplanned events, such as the failure of a storage device.  

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• LOGS

  In many real-world applications, sensitive information must be kept in log files on an untrusted machine. In the event that an attacker captures this machine, we would like to guarantee that he will gain little or no information from the log files and to limit his ability to corrupt the log files. We describe a computationally cheap method for making all log entries generated prior to the logging machine’s compromise impossible for the attacker to read, and also impossible to modify or destroy undetectably.
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