Browsed by
Tag: security

Local Admin Password Solution (LAPS) STEP-BY-STEP

Local Admin Password Solution (LAPS) STEP-BY-STEP

Today we will deploy Microsoft LAPS solution to manage local administrator passwords in computers. Its an excellent tool that takes the burden of rotation of local administrator account password or to avoid cases when all workstation have the same password for local administrator account. First we need to download LAPS from the MS download center and install it on Management Computer (Domain Controller). LAPS is installed to “%ProgramFiles%\LAPS”. https://www.microsoft.com/en-us/download/details.aspx?id=46899 For “Managed computers” we can run the installer to install same…

Read More Read More

Describing Security Event Analysis: Diamond Model for Intrusion Analysis

Describing Security Event Analysis: Diamond Model for Intrusion Analysis

Critical thinking skills are a core requirement for a security analyst. The security analyst must be able to link together logs, events, and other meta-data by identifying patterns across a massive amount of gathered data. The diamond model, developed by Caltagirone, Pendergast, and Betz is a method for helping the security analysts derive order from the chaos. The basic intent of the diamond model is to create a systematic way to analyze events in a repeatable way so that the…

Read More Read More

Regulatory Compliance

Regulatory Compliance

Compliance regulations are a major driver for security in organizations of all kinds. They define not only the scope and parameters for the risk and security architectures of an organization, but also the liability for those organizations that fail to comply. Current trends in regulatory compliance include the following: Strengthened enforcement Global spread of data breach notification laws More prescriptive regulations Growing requirements regarding third parties (business partners) Risk-based compliance on the rise Compliance process streamlined and automated The following…

Read More Read More

Access Control Models

Access Control Models

Access control includes control over access to the network resources, information system resources, and information. It is crucial for an organization to implement the proper access controls to protect the organization’s resources and information. A security analyst should understand the different basic models for implementing access controls in order to better understand how attackers can break the access controls. Mandatory Access Control Secures information by assigning sensitivity (security level) labels on information and comparing it to the level of sensitivity…

Read More Read More

Describing Security Event Analysis: Cyber Kill Chain

Describing Security Event Analysis: Cyber Kill Chain

The cyber kill chain is a model that describes the structure of an attack. One of an analyst’s key jobs is to understand exactly what the attackers did. The steps of the kill chain enhance visibility into an attack and enrich an analyst’s understanding of an adversary’s tactics, techniques, and procedures.   The following lists the seven stages of the cyber kill chain: Reconnaissance: Research, identification and selection of targets, often represented as crawling Internet websites such as conference proceedings and…

Read More Read More

IPS Evasion Techniques

IPS Evasion Techniques

Traffic Fragmentation One of the early network IPS evasion techniques used fragmentation of traffic to attempt to bypass the network IPS sensor. Fragmentation-based evasion refers to any evasion attempts where the attacker fragments the malicious traffic, hoping to avoid detection or filtering in the following ways: Bypassing the network IPS sensor if the IPS sensor does not perform any fragment reassembly Reordering the fragments, hoping the network IPS sensor does not correctly reorder the fragments Classic examples of fragmentation-based evasion…

Read More Read More

Describing Information Security Concepts: Risk

Describing Information Security Concepts: Risk

Risk is a function of the likelihood of a given threat source’s exercising a particular potential vulnerability, and the resulting impact of that adverse event on the organization. Managing risk is a complex, multifaceted activity that requires the involvement of the entire organization. The NIST Special Publication 800-39: Risk Management Guide for Information Technology Systems defines some common risk terminology that is appropriate for security analysts, as follows: Risk= Threats x Vulnerabilities x Impact A threat source is an intent…

Read More Read More

Dynamic ARP Inspection (DAI)

Dynamic ARP Inspection (DAI)

Dynamic ARP Inspection (DAI) has following characteristics – Enable DHCP shooping first – Create ARP ACL for static IPs – By default all ports are untrusted when feature is enabled – 15 PPS rate-limit for untrusted ports by default ip arp inspection vlan 13 interface GigabitEthernet1/0/33 ip arp inspection trust interface GigabitEthernet1/0/34 ip arp inspection limit 10 arp access-list TEST-ARP-ACL permit ip host 10.10.10.10 mac AAAA.BBBB.CCCC 0.0.0 ip arp inspection filter TEST-ARP-ACL vlan 13 errdisable recovery cause arp-inspection errdisable recovery…

Read More Read More

Source Guard

Source Guard

Cisco Switch IP Source Guard has following features – Allows DCHP traffic by default – Enable DHCP shooping first – Create ip source binding table for static IPs – No ARP Police on trusted port interface GigabitEthernet1/0/33 ip verify source port-security ip source binding AAAA.BBBB.CCCC vlan 13 10.10.10.10 interface GigabitEthernet1/0/33 show ip verify source show ip source binding