Network Security Specialist III

1 month ago

Arlington, Virginia, United States Farfield Systems Full time
Job Overview

Farfield Systems is seeking a highly skilled Network Security Specialist III to join our team. As a key member of our Cybersecurity and Infrastructure Protection Agency (CISA) Hunt and Incident Response Team (HIRT), you will play a critical role in supporting the Federal staff with a broad set of support functions.

Key Responsibilities:

  • Assist the Government lead in coordinating teams in preliminary incident response investigations
  • Interface with customers while on site
  • Determine appropriate courses of action in response to identified and analyzed anomalous network activity
  • Assess network topology and device configurations to identify critical security concerns and provide security best practice recommendations
  • Collect and analyze network intrusion artifacts to enable mitigation of potential Computer Network Defense incidents
  • Analyze identified malicious network activity to determine weaknesses exploited, exploitation methods, effects on system and information
  • Collect network device integrity data and analyze for signs of tampering or compromise
  • Assist with real-time CND incident handling tasks to support onsite engagements

Required Skills:

  • U.S. Citizenship
  • Active TS/SCI clearance
  • DHS Suitability
  • 5+ years of directly relevant experience in network investigations
  • Knowledge of CND policies, procedures, and regulations
  • Knowledge of TCP/IP protocols
  • Strong understanding of standard protocols – ICMP, HTTP/S, DNS, SSH, SMTP, SMB, NFS, etc.
  • Knowledge and experience of Wifi networking
  • Knowledge and experience with network topologies – DMZ's, WAN's, etc.
  • Experience with Splunk (or other SIEM's)
  • Ability to find, characterize, and report signs of infection
  • Knowledge of Computer Network Defense policies, procedures, and regulations
  • Knowledge of defense-in-depth principles and general attack stages with respect to network security architecture
  • Ability to characterize and analyze network traffic to identify anomalous activity and potential threats to network resources
  • Ability to identify and analyze anomalies in network traffic using metadata
  • Experience with reconstructing a malicious attack or activity based on network traffic
  • Experience examining network topologies to understand data flows through the network

Desired Skills:

  • Knowledge of network device integrity concepts and methodologies
  • Understanding of how to preserve evidence integrity according to standard operating procedures or national standards
  • Proficiency with network analysis software (e.g. Wireshark)
  • Proficiency with carving and extracting information from PCAP data
  • Proficiency with non-traditional network traffic (e.g. Command and Control)
  • Proficiency with preserving evidence integrity according to standard operating procedures or national standards
  • Proficiency with designing cyber security systems and environments in a Linux and/or Windows environment
  • Proficiency with virtualized environments

Required Education:

BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 4-6 years of network investigations or forensics experience.

Desired Certifications:

  • DoD IAT Level II, IASAE II, CSSP Analyst
  • DoD GCIA, GCIH, CSSP Analyst/CSSP Incident Responder
  • DoD CEH, CSSP Analyst
  • SANS GIAC GNFA preferred

Farfield Systems is an equal opportunity employer and welcomes applications from diverse candidates. We are committed to creating an inclusive work environment that values diversity, equity, and inclusion.

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