• OS Administrator Windows

    CACI International (Chantilly, VA)
    …Group Policies + Implement and manage Windows Server roles and features (eg, DNS , DHCP, file services) + Automate tasks using PowerShell scripting + Manage and ... used in secure environments. + Knowledge of networking protocols and services ( DNS , DHCP, HTTP/S, etc.) + Experience with configuration management tools (eg,… more
    CACI International (05/23/25)
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  • Network Based Systems Analyst (Cyber Network…

    ARSIEM (Arlington, VA)
    …knowledge of TCP/IP protocols + In-depth knowledge of standard protocols - ICMP, HTTP/S, DNS , SSH, SMTP, SMB, NFS, etc. + In-depth knowledge and experience of Wifi ... networking + In-depth knowledge and experience of network topologies, DMZs, WANs, etc. + Substantial knowledge of Splunk (or other SIEMs) + Understanding of MITRE Adversary Tactics, Techniques, and Common Knowledge (ATT&CK) + Knowledge of Computer Network… more
    ARSIEM (08/10/25)
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  • IT Monitoring Specialist - TS/SCI with Polygraph

    General Dynamics Information Technology (Fort Belvoir, VA)
    …2022) and Windows client versions. + Familiarity with Active Directory, Group Policy, DNS , DHCP, Microsoft Exchange, and other core Windows services. + Ability to ... analyze and interpret system logs, performance metrics, and alerts to diagnose issues effectively. **Education:** + Bachelor's degree in Information Technology, Computer Science, or a related field (or equivalent work experience). **Certification:** + CompTIA… more
    General Dynamics Information Technology (08/10/25)
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  • Security Engineer , Kuiper Security Controls…

    Amazon (Arlington, VA)
    …in computer science or equivalent - Knowledge of networking protocols such as HTTP, DNS and TCP/IP Preferred Qualifications - 2+ years of any combination of the ... following: threat modeling experience, secure coding, identity management and authentication, software development, cryptography, system administration and network security experience - Experience with AWS products and services - Experience with programming… more
    Amazon (08/10/25)
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  • Cyber Engineer Principal

    SAIC (VA)
    …security-related technologies including encryption, IPsec, PKI, VPNs, firewalls, proxy services, DNS , and access-lists + Knowledge of the DoD Security Technical ... Implementation Guides (STIGS), Security Requirements Guides (SRG), and industry best practices for various applications + Certificate to Field (CtF) Policies Desired Skills: + Experience with Amazon Web Services (AWS) to include services such as VPC, EC2, IAM,… more
    SAIC (08/09/25)
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  • Information Systems Security Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Fort Belvoir, VA)
    …events such as Windows or Linux, and networking protocols such as TCP / IP, DNS , DHCP, or HTTP / HTTPS + Experience with cybersecurity tools and technologies such as ... IDS / IPS, firewalls, host-based security, or Identity and Access Management ( IDAM ) , and DevSecOps tools and practices such as CI / CD pipelines, including GitLab CI / CD and Azure DevOps + Experience with programming or scripting, including with… more
    BOOZ, ALLEN & HAMILTON, INC. (08/09/25)
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  • Network Engineer III

    General Dynamics Information Technology (Fairfax, VA)
    …limited to: BGP, OSPF, STP, ARP, VLANs, Trunking, LACP, VPCs, ICMP, LDAP, RADIUS, DNS , DHCP, HTTP, TLS, SMTP, SSH, SCP + Strong knowledge and hands-on experience ... with Public Key Infrastructure (PKI) and certificates. + Implementation and administration experience with forward and reverse proxies and/or load balancers. **Desired Skills/Knowledge:** + Implementation and administration experience with application centric… more
    General Dynamics Information Technology (08/09/25)
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  • Cyber Network Forensic Analyst IV

    Nightwing (Sterling, VA)
    …knowledge of TCP/IP protocols - In depth knowledge of standard protocols - ICMP, HTTP/S, DNS , SSH, SMTP, SMB, NFS, etc. - In depth knowledge and experience of Wifi ... networking - In depth knowledge and experience of network topologies - DMZ's, WAN's, etc. - Substantial knowledge of Splunk (or other SIEM's)- Understanding of MITRE Adversary Tactics, Techniques and Common Knowledge (ATT&CK) - Knowledge of Computer Network… more
    Nightwing (08/09/25)
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  • Customer Support Engineer

    Insight Global (Reston, VA)
    …working with Windows based tools -Experience with network troubleshooting using DNS , TCP/IP, Browser Tracing, or Fiddler -Strong understanding of client-service ... architecture -Experience reproducing customer issues and document very specific reproduction steps -Strong experience in diagnosing faults in complex online services -Ability to diagnose client-service issues understanding the full client-to-server… more
    Insight Global (08/09/25)
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  • Senior Forescout Security Engineer

    SAIC (VA)
    …Check Point, F5 SSLO, Gigamon, Cisco VPN, Trellix/FireEye (network appliances), DNS , NAT/PAT, Corelight, Cisco ISE, Palo Alto Networks. Target salary range: ... $120,001 - $160,000. The estimate displayed represents the typical salary range for this position based on experience and other factors. REQNUMBER: 2507492 SAIC is a premier technology integrator, solving our nation's most complex modernization and systems… more
    SAIC (08/09/25)
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