Access Control Model

Access Control Models:

Access Controls ensures that only authenticated and authorized entities can access resources.

Role Based Access Controls:
It uses roles to manage rights and permissions for users.This is useful for users within a specific department who perform the same job functions. An administrator creates the roles and then assigns the specific rights and permissions to the roles instead of users.

Rule Based Access Controls:
Rule Based Access Controls uses rules. Rules can be static and dynamic. Static rules are implemented on routers or on firewalls. Examples of dynamic rules are IPS then modify rules to block the traffic from an attacker.

Discretionary Access Controls:
Every object has an owner, and the owner establishes access for the objects. 

Mandatory Access Controls:
It uses labels sometimes referred to as security labels to determine access. Administrators assign labels to users and files/folders. When the label matches then the system grants access to that files/folders. When the label doesn't match, the access model blocks the access.

Attribute Based Access Controls:
It evaluates attributes and grants access based on the value of these attributes. Attributes can be any attributes and grant access when the system detects a match.

Comments

Post a Comment

Popular posts from this blog

Analyzing Spear Phishing Email

Image
Phishing is the technique of fraudulent attempt by the attacker to obtain sensitive and confidential information i.e. Credentials, PII information, credit card, bank details. It can also be targeted attack to focus on the specific organization of individual. The attacker often tailors an email to speak directory to targeted user. There are many types of phishing as follow. I wouldn't explain the types. You can read Here . In this article you'll learn how to analyze the sophisticated phishing email. So, Let's start the case study to explain.  Spearphising :  Spearphising is the technique in which attacker aims at one person and lures him/her into providing confidential data. Attacker compile the email according to the specific user. The email would consist some of the target's email, username, designation.  Case Study: User receive the spearphising email containing the PDF attachment with double extension. Email body contains the unprofessional statement "Kindly m
Read more

Cyber Threat Intel

Image
What is Cyber Threat Intel? Threat intel is the information about the threats. Cyber threat intel is used to better understand, predict and adopt to the behavior of malicious actors. It plays an important role in preventing the zero-day attacks. " Threat information that has been aggregated, transformed, analyzed, interpreted, or enriched to provide the necessary context for decision-making processes " (NIST). Threat Intel life Cycle: Intelligence lifecycle is the process of developing raw information into finished intelligence for policymaker to use in decision making and action. CTI Life Cycle Planning and Direction Planning and direction helps in setting up the goals for the threat intel program. Priorities and requirements are defined in this phase. Collection: Collection means gathering of data to produce the finished intelligence. Data includes logs(Firewall, IPS/IDS, Endpoints), threat feeds and OSINT(reports, social media, public forums). Collection Types of Collectio
Read more

Authentication Services

Image
  Authentication Services: In this section we will discuss the authentication services. The main goal of these services are to ensure that unencrypted credentials are not sent across the network. In other words they ensure that credentials are not sent in clear text. Kerberos: It is a network authentication mechanism mostly used in both windows active directory domain and some Unix environments. Kerberos provides mutual authentication that can help prevent MITM attacks and uses tickets to help prevent replay attacks. Working of Kerberos: The KDC(key distribution center) uses a complex process of issuing TGTs(Ticket granting tickets) and other tickets. The KDC packages user credentials within the ticket. Tickets provide authentication for users when they access resources such as files on the file server. These tickets are sometimes referred to as tokens. NTLM: New Technology LAN Manager is a suite of protocols that provide authentication, integrity, and confidentiality within windows sy
Read more