Securing public servers

Securing public servers help to prevent hackers from gaining access to additional hosts if a compromise were to occur. Learn about common attacks and mitigations.


  • Cloud service models Video — 00:08:27
    • Cloud computing services are categorized using the term “as a service” (aaS). This episode discusses IaaS, Paas, SaaS, and where responsibility lies for each type of service.

  • Docker container lab Video — 00:04:08
    • Containerized applications are self-contained boundaries consisting of only application files, not an operating system. This demo shows how to work with Docker containers on the Linux platform.

  • Hypervisors and virtual machines Video — 00:08:24
    • Hypervisors are servers configured to host virtual machine guests. This episode will discuss Type 1 and Type 2 hypervisors as well as hardening.

  • Common attacks and mitigations Video — 00:09:47
    • Public servers are subjected to many types of attacks that can be mitigated by hardening the network and host using a wide variety of methods. This episode covers common attacks include DDoS, URL hijacking/redirection, session replay, and pass-the-hash.

  • Securing the cloud Video — 00:10:20
    • Cloud security is generally split between the Cloud Service Provider (CSP) and the cloud tenant, depending on which type of cloud service is being used. Security solutions include firewalls, data loss prevention tools as well as a Cloud Access Security Broker which enforces cloud computing security policies.

  • Ask me anything Video — 00:01:59
    • Virtual machines, often referred to as instances, are widely used both on-premises and in the cloud. This episode tackles issues related to being aware of deployed instances in the interest of reducing the attack surface.

  • Cloud deployment models Video — 00:08:45
    • Virtualization alone does not constitute cloud computing; a number of characteristics such as resource pooling and metered usage must also be involved. This episode discusses public, private, hybrid and community clouds.

  • Exam question review Video — 00:02:10
    • Public servers can be hosted as virtual machines in the public cloud. In this episode, a scenario is presented where a virtual machine requires access to specific cloud-based resources.

  • Containers and software-defined networking Video — 00:11:27
    • Modern software development often uses application containers which serve as a logical boundary for app files and settings outside of the operating system. This episode also covers software-defined networking (SDN).

  • Defining a public server Video — 00:00:44
    • Public servers offer services to Internet users. These servers should be hardened and placed on an isolated network such as a screened subnet or DMZ so that in the case of compromise, lateral movement by the attacker will not allow access to other sensitive hosts.


Course description

Meet the author

Mike Meyers, affectionately called the “Alpha Geek,” is the industry’s leading authority on CompTIA certifications. He is the president and co-founder of Total Seminars, LLC, a provider of PC and network repair seminars, books, videos and courseware for thousands of organizations throughout the world. Mike has been involved in the computer and network repair industry since 1987 as a technician, instructor, author, consultant and speaker. He has sold over a million IT and certification books, including the best-selling CompTIA A+ Certification All-in-One Exam Guide and CompTIA Network+ Certification All-in-One Exam Guide. He has personally taught thousands of students, including U.S. senators, U.S. Supreme Court Justices, members of the United Nation, every branch of the U.S. Armed Forces, many branches of the Department of Justice, hundreds of corporate clients and academic students at every level.

Meet the author

At Infosec, we believe knowledge is the most powerful tool in the fight against cybercrime. We help IT and security professionals advance their careers with a full regimen of certification and skills training. We also empower all employees with security awareness training to stay cybersecure at work and home. Driven by smart people wanting to do good, Infosec educates entire organizations on how to defend themselves from cybercrime. That’s what we do every day — equipping everyone with the latest security skills so the good guys win.

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