Notes - MIECT
Segurança Em Redes De Comunicações
Notes - MIECT
Segurança Em Redes De Comunicações
  • Segurança Em Redes De Comunicações
  • Corporate Networks Topics
    • Objectives of Network Design
    • Equipments
    • Hierarchical Network Model
    • Modular Network Design
    • Designing the Access Layer
    • Designing the Core Layer
    • Virtual LANs
      • VLANs on Access Points
    • Spanning Tree Protocol
    • IP Routing Overview
  • Introduction to Network Security
    • Type of Attacks
    • Attacks Phases
      • Infiltration Phase
      • Propagation Phase
      • Aggregation and Exfiltration Phase
    • Defenses
    • Security Metrics
  • Network Access Control
    • AAA Architecture
      • TACACS+
      • RADIUS
      • DIAMETER
    • IEEE 802.11 services
    • Joining a BSS
      • WLAN Frames
      • Joining BSS with AP
    • WPA and 802.11i (WPA2)
  • Network Flow Control
    • Network Security Systems
    • Firewalls
    • High-Availability
    • Load Balancing Firewall Load
    • Best Practices and Recommendations
    • IP Spoofing
    • Half-Open TCP Connection Problem
    • DDoS Mitigation at Source
    • Cisco’s Access Control Lists (ACL)
    • Linux IPTables
    • Control By Analysis of Higher Layers
  • Secure Communications
    • Public Key Infrastructure (PKI)
    • X.509 Certificate Contents
    • Traffic Tunnel Concept
      • Next Hop Resolution Protocol (NHRP)
      • Hub-Spoke vs. Spoke-Spoke
    • IPSec
    • Establishing SA and Cryptographic Keys
    • Virtual Private Networks (VPN)
    • Management of Asymmetric Keys
  • Remote Access
    • Remote Access
    • IPsec NAT Transversal
    • Integration with Flow Control
  • Intrusion Detection and Prevention
    • Intrusion Detection and Prevention
    • Host-Based vs. Network-Based
    • Signature vs. Anomaly Based
    • Network Deployment
  • Network Monitoring SIEM
    • Core and End-to-End Monitoring
    • Node Monitoring
    • End-User/Host/App Monitoring
    • Server/Service/Cloud Monitoring
    • Per-Service Detailed Monitoring
    • Data Sources
      • SNMP
      • NetFlow
    • Network Passive Probing Packet Capturing
    • Remote CLI Access
    • Log Files Access
      • Log Management Systems (LMS)
      • Security Information and Events Management (SIEM)
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  • Technical Network Vulnerabilities
  • Software
  • Hardware
  • Known vs. Unknown
  1. Introduction to Network Security

Attacks Phases

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Last updated 2 years ago

Escalation of goals and privileges.

  • Public knowledge opens doors to private information and access to protected domains [Infiltration].

  • The first illicit access to a protected domain may not provide a relevant outcome.

  • The attacker must acquire more knowledge [Learning].

  • The additional knowledge allows to access other secure domain zones/devices/data with increasing relevance [Propagation].

    • At any phase, the attacker may require additional knowledge [Learning].

  • When a relevant outcome is acquired it must be transferred outside of the protected domain [Exfiltration].

  • Direct exfiltration may denounce the relevant points inside of the secure domain.

    • The relevant outcome must be first transferred inside the protected domain to a less important point [Aggregation].

    • The attacker chooses a point that may be detected and lost without harm.

Technical Network Vulnerabilities

Software

  • Applications.

  • Frameworks/API.

  • Protocols.

  • Operating Systems.

    • Kernel, kernel modules, drivers, and base applications.

    • Configurations!

Hardware

  • Physical tempering.

  • Physical emissions.

    • Electromagnetic emissions, sound, ...

  • Power stability, Electromagnetic Pulses (EMP), etc ...

Known vs. Unknown

  • CVE.

  • IDS/IPS and antivirus databases.