Efficiency : Efficiency of a program depends upon the choice of data structures. For example: suppose, we have some data and we need to perform the search for a perticular record. In that case, if we organize our data in an array, we will have to search sequentially element by element. hence, using array may … Read more
Data Structure can be defined as the group of data elements which provides an efficient way of storing and organising data in the computer so that it can be used efficiently. Some examples of Data Structures are arrays, Linked List, Stack, Queue, etc. Data Structures are widely used in almost every aspect of Computer Science … Read more
Frame Work is collection of software or program, that trigger off easy coding and implementing the code. It helps to programmer to achieve goals in short period of time. Some of frame works- Laravel Laravel is a free, open-source PHP web framework, created by Taylor Otwell and intended for the development of web applications following … Read more
To install PHP, we will suggest you to install AMP (Apache, MySQL, PHP) software stack. It is available for all operating systems. WAMP for Windows LAMP for Linux MAMP for Mac SAMP for Solaris FAMP for FreeBSD XAMPP (Cross, Apache, MySQL, PHP, Perl) for Cross Platform: It includes some other components too such as FileZilla, … Read more
Vulnerabilities need to be identified by both the penetration tester and the vulnerability scanner. The steps are similar for the security tester and an unauthorized attacker. The attacker may choose to proceed more slowly to avoid detection, but some penetration testers will also start slowly so that the target company can learn where their detection … Read more
Develop a penetration test plan Establishing the test ground rules is a particularly important part of penetration analysis. The rules are captured in the penetration test plan, which defines the test objective, the product configuration, the test environment, test resources, and schedule. It is important that penetration testing use ethical evaluators who are no antagonistic … Read more
It is possible that email and browser-based viruses, Trojans and worms are the source of the myth that Windows is attacked more often than Linux. Clearly there are more desktop installations of Windows than Linux. It is certainly possible, if not probable, that Windows desktop software is attacked more often because Windows dominates the desktop. … Read more
HOW TO SET UP A FIREWALL UNDER LINUX? To configure a Linux firewall, you will likely use the latest implementation of firewalling, called IPTables. IPTables is a packet filter for kernels 2.4 and above. It is a tremendous improvement over IPChains and provides enhanced features such as stateful packet filtering, Network Address Translation, MAC Address … Read more
/etc/passwd is a text file that contains the attributes of (i.e., basic information about) each user or account on a computer running Linux or another Unix-like operating system. DESIGN The permissions for /etc/passwd are by default set so that it is world readable, that is, so that it can be read by any user on … Read more
SHADOW FILE In Unix-like operating systems, /etc/shadow is used to increase the security level of passwords by restricting all but highly privileged users’ access to hashed password data. Typically, that data is kept in files owned by and accessible only by the super user. DESIGN Systems administrators can reduce the likelihood of brute force attacks … Read more