Hire the best Network Security Engineers

Check out Network Security Engineers with the skills you need for your next job.

Clients rate Network Security Engineers
Rating is 4.8 out of 5.
4.8/5
based on 3,225 client reviews
Bhakti V.
$30/hr
  • Trophy Icon Network Security
  • Information Security
  • Project Risk Management
  • PCI
  • Disaster Recovery
  • Technical Writing
  • Policy Writing
  • Cloud Security
  • ISO 27001
  • Editing & Proofreading
  • Website Copywriting
  • Blockchain
  • Artificial Intelligence
  • Amazon Web Services
  • Robotics

With a degree in Computer Engineering and a passion for writing, my experience spans across writing whitepapers, blogs, research reports, content for websites, thesis for academic submissions, sales pitch, business proposals and more. I am highly organized and schedule my time to get things accomplished accordingly. I am detail-oriented and an excellent researcher. I can be entrusted with big projects as I prefer to complete my work before deadlines giving you ample time to review my work and provide feedback. I take pride in my work

Ratko B.
$38/hr
  • Trophy Icon Network Security
  • Linux System Administration
  • Network Administration
  • Internet Security
  • Firewall
  • CentOS
  • Unix System Administration
  • Apache Administration
  • Zimbra Administration
  • Red Hat Administration
  • Let's Encrypt
  • Ubuntu
  • SSL
  • System Administration
  • Cloudflare

I have 30-years experience in network projects including design, implementation, system administration and in software development. For the first 5 years of my career I worked on software development: coding and especially testing. For the last 25 years I'm working on implementation and maintenance of University of Nis WAN. Last 20 years I'm deeply involved in AMRES (Academic Network of Serbia) project. Don't fix it if it ain't broken, don't break it if you can't fix it! SKILLS SUMMARY - Any system administration tasks - Operating Systems: any *nix (Linux, FreeBSD, SGI IRIX, SCO, Solaris, OSX), Windows 3.1/9x/Me/XP/Vista/W7/W8/W10,...

Marcelo V.
$75/hr
  • Trophy Icon Network Security
  • VMware vSphere
  • Fortinet Technologies
  • Network Administration
  • Cisco UCS
  • DNS
  • Active Directory
  • LAN Implementation
  • Virtual LAN
  • Fortinet

Active Certifications: - Fortinet NSE 4 - VMWare VCP 5 Working on certifications: - Fortinet NSE 5 - Fortianalyzer - Fortinet NSE 5 - FortiEMS I'm a Datacenter/Network administrator available for any kind of IT infrastructure/operation project. My background is from Telecom Engineering, but I'm a "man with many hats" and I've been working in IT for the past 20 years. I have many years of experience in installation, configuration and troubleshooting virtualization solutions using VMware products, cloud solutions/migrations based on Microsoft Office 365 and security implementations using Fortigate. Recently I've been dedicating my work to...

Harrison M.
$100/hr
  • Trophy Icon Network Security
  • Information Security
  • Data Protection
  • Cloud Computing
  • PCI
  • Microsoft Office 365
  • Technical Writing
  • Security Testing
  • Cybersecurity Management
  • Information Security
  • Penetration Testing
  • Vulnerability Assessment
  • Information Security Audit
  • ISO 27001

Hello I am an experienced cyber security professional and owner of the UK based boutique consultancy Periculo.co.uk Having drawn on my experience over a number of years, working with a huge variety of customers ranging from construction companies to banks, charities and MOD contractors I became a freelancer to offer affordable expertise that benefits everyone. I strongly believe that every organisation needs to take security and compliance seriously however not all have the big budget that most consultancys demand for their work. Through my own internal processes I'm able to quickly deliver high quality, best in class security and...

Jan G.
$45/hr
  • Trophy Icon Network Security
  • Cisco Certified Internetwork Expert
  • Network Administration
  • Cisco ASA
  • Cisco Meraki
  • Cisco Router
  • Palo Alto Firewalls
  • VPN
  • Linux System Administration
  • Zabbix

I am independent network consultant with 19 years of experience in network/security business and a CCIE Security #36569 Engineer. As a rule I only give out proposals to jobs that I know how to finish. My goal is to solve issues at hand quickly, precisely and without any delays. As a system engineer and consultant I was responsible for design, implementation and operations of setups ranging from SMB networks to large worldwide-scale deployments. Some of projects I was involved in a significant capacity (lead designer, main contractor for deployment and operations, ...) in included: - SD-WAN networks buildup and operation for two global,...

Alex F.
$35/hr
  • Trophy Icon Network Security
  • Internet Security
  • Wireless Security
  • Security Analysis
  • Information Security
  • Windows Administration
  • Linux System Administration
  • AWS Systems Manager
  • Security Engineering
  • Security Infrastructure

I'm a Security Specialist, with +15 yr of experience in the security field and +20 yr in system administration (Linux, AIX, BSD and Windows) on banking, education and R&D sectors. Feel free to get in touch if you need: * Security infrastructure administration or advice * Security Audit & Pentesting * Linux/Windows/AIX system administration or server troubleshooting and LAMP/LEMP stack deployments and fine tunning. I will be glad to collaborate in any interesting project.

Ramsey B.
$125/hr
  • Trophy Icon Network Security
  • Microsoft Active Directory
  • VMware Administration
  • Server Virtualization
  • Computing & Networking
  • Infrastructure Management
  • Information Security
  • Systems Engineering
  • Amazon Web Services
  • Cloud Engineering Consultation
  • DNS
  • Computer Network
  • Network Design
  • Microsoft Azure
  • Security Engineering

ESXi/vSphere, AWS architecture and implementation, DevSec(Ops), SDN, Windows/Linux systems administration, root-cause analysis on infrastructure including networks, enterprise endpoint product test and eval, test case builds. Throughout my 13 years I've seen and touched almost everything. Very efficient and thorough.

Akar P.
$20/hr
  • Trophy Icon Network Security
  • Cisco ASA
  • Information Security
  • Network Design
  • Network Administration
  • Network Analysis
  • Network Monitoring
  • Cisco Certified Internetwork Expert
  • Cisco Certified Network Associate
  • Network Planning
  • Cisco Router
  • Cisco Certified Network Professional

I am CCIE security and have about 10+ years of experience in network security domain. I am also specialist in network automation using python. Previously I have worked with well-known data centres in India for their infrastructure set up. And I also have a very good experience with cloud set of private or hybrid cloud public cloud. My skill sets are: VPN Switching Routing Firewall Proxmox AWS GCP OCI Monitoring tools setup and etc. I have worked on: Cisco Fortinet Paloalto Checkpoint Vyos Hp and etc.

Samson A.
$120/hr
  • Trophy Icon Network Security
  • Security Engineering
  • Information Security Governance
  • Cloud Computing
  • Information Security
  • Security Operation Center
  • Security Analysis

passionate security enthusiast interested in assisting a team increase their security posture by providing guidance and consultation on building and improving security operation capabilities, reducing overall attack surface with proper vulnerability management, and security engineering/architectural improvements.

Patrick M.
$75/hr
  • Trophy Icon Network Security
  • Python
  • Linux System Administration
  • Information Security
  • LAN Administration
  • Network Administration
  • Veeam
  • VoIP
  • FreePBX
  • Healthcare & Medical
  • Windows Server
  • VoIP Administration
  • Email Support
  • PfSense
  • Network Engineering

💻 20+ years IT experience - specializing in network engineering and security - accomplished Windows server administrator - experienced scripter - VOIP PBX administrator - Microsoft 365 Administrator - Linux administration - Veeam and backup solutions - Powershell scripting - Linux Bash scripting I am an IT worker looking to put my considerable amount of experience to help others. I was a technician for 15 years, a network engineer and systems administrator for three, and now work as a Network Security Engineer for a large healthcare group. I earned an A.A.S. in Information Security and BS in CyberOperations focusing on information...

Evan W.
$140/hr
  • Trophy Icon Network Security
  • System Administration
  • Business with 100-999 Employees
  • Technical Support
  • Microsoft IIS
  • Microsoft Azure
  • Microsoft Server
  • Hardware Troubleshooting
  • VMware ESX Server
  • Windows Server
  • Business with 10-99 Employees
  • Microsoft Windows
  • Office 365
  • Amazon EC2
  • Microsoft Exchange Server

⭐⭐⭐⭐⭐ 5-Star Rating ✅ A Top 3% Performer on Upwork ✅ $100k+ Earned on Upwork ✅ 100% Job Success Score ✅ Top-Rated Plus Talent ✅ Microsoft & AWS Certified ✅ 14+ Years Senior Experience At Scotland’s Premier MSP ✅ Reliable, Professional, Friendly My Expertise: ⚡️ Microsoft Windows Server ⚡️ Microsoft/Office 365 ⚡️ Microsoft Azure Certified Administrator Associate ⚡️ Project Management/Delivery ⚡️ Linux Support - Ubuntu, Apache ⚡️ Networking (DNS, DHCP, Routing, VPNs, Firewall & Security, VLANs) ⚡️ VMWare ESXi & Hyper-V ⚡️ Email Deliverability (DNS, SPF, DKIM, DMARC) ⚡️ Powershell/Automation ⚡️ Connectwise Manage/Automate/Sell, NinjaRMM,...

Prabitra B.
$30/hr
  • Trophy Icon Network Security
  • Network Administration
  • Cisco Certified Network Professional
  • Cisco ASA
  • VPN
  • Firewall
  • Cisco Router
  • Check Point
  • Cisco Meraki
  • Load Balancing
  • Fortinet Technologies
  • Ubiquiti
  • Network Security Management
  • Web Proxy
  • Fortinet

CCSE, ITILv3 , Fortinet NSE4 CCNP R&S,CCNP Security. In the last 12 years, I have been working on various network products and have gained comprehensive experience in Cisco, Fortinet, Sonicwall, Checkpoint, HP, F5, Radware technologies. I have been involved in the design, configuration, and troubleshooting of Network products. Firewalls: Cisco ASA 5500 Series Cisco ASA 5500-X Series Cisco RV Series Cisco Firepower 2100Series Cisco Firepower 4100Series Fortigate 50E Fortigate 60E Fortigate 90E Fortigate 800C Fortigate 100E Fortigate 3OOE Fortigate 800D FortiGate 1500D Checkpoint 4000 Appliance Checkpoint 5800 Appliance Checkpoint...

Kalpesh P.
$20/hr
  • Trophy Icon Network Security
  • Network Monitoring
  • Technical Support
  • Sophos Sophos UTM
  • Microsoft Office
  • VPN
  • Shopify
  • Customer Support
  • Customer Service
  • Firewall

I am Working with Cyberoam/Sophos products. Having 5+ Yrs of hand on Exp. for Cyberoam/Sophos product. Certified Sophos Support Engineer, Cyberoam Certified Engineer as well as working as a Customer support representative for the E-commerce Shopify dropshipping website. 1. Working with Routing, Creating policy Configuring IPSec VPN, SSL VPN, PPTP VPN, L2TP VPN. 2. IPS policy. 3. Spam filter 4. Authentication service on Cyberoam. 5. Depth knowledge in VPN technology. Trained on AWS with skill of create and maintain instances, Assign a role to user, VPC, DNS, Cloudwatch, etc. Troubleshooting, installing, configuring software  System...

Volodya M.
$35/hr
  • Trophy Icon Network Security
  • Linux System Administration
  • Windows Server
  • Web Service
  • Network Administration
  • Database Administration
  • Puppet Administration
  • VPN
  • VMware ESX Server
  • SSH

Greetings, I am experienced DevOps Engineer with a demonstrated history of working in the information technology and services industry. I am skilled in Unix/Linux, Cyber Security, Networking, Windows Servers, Cloud systems, CI/CD Pipelines, Kubernetes/Docker. I am strong engineering professional with a Master's degree focused in Information Technology from State Engineering University of Armenia. Skills: • Good experience with Linux and Windows servers • Good experience with Network technologies • Infrastructure and APM monitoring systems PRTG, ELK, Datadog, Newrelic, OpManager • Good experience with ESXi , Hyper V installation,...

Hafiz Muhammad  B.
$20/hr
  • Trophy Icon Network Security
  • Network Administration
  • Network Design
  • VPN
  • Linux
  • CI/CD Platform
  • Ubiquiti
  • Firewall
  • Website Migration
  • AWS Systems Manager
  • Wireless Network Implementation
  • Wireless Security
  • AWS Server Migration
  • Network Engineering

Result oriented & well-organized Professional Engineer Experience: Over 10 years (Network Engineer) Degree: (MS/Mphil Computer Science) Details of hands-on skills: - Routing Switching (Cisco, UniFi, Dlink) - Microsoft Systems Administration - AWS Administration - Linux Administration - Firewalls Configuration ( Check Point, Cyberoam, ASA, Kerio Control, Sonicwall, Fortinet, Sophos) - Voice over IP Configurations over Secure tunnel - Enterprise Routers 3800 ISR, 2800 ISR,1800, 2900 ISR, 7200VXR, etc - Catalyst Switches series, 2900 & Multilayer 3500, 3700 series. - WAN Architectures (VPN, MPLS) - Redundancy and High Availability...

Samyek M.
$40/hr
  • Trophy Icon Network Security
  • Network Engineering
  • Network Design
  • Network Analysis
  • Microsoft Visio

I have been working as Senior Network Engineer at Netfiniti Pvt. Ltd. (Distributor of Fortinet Products). In these three years I have been involved in various Government and Private projects regarding New Network Architecture Building, Restructuring of Networks, Deployments of various network devices. Also I have been good at troubleshooting network related problem, network connectivity and overall cloud to on-premise network security. Certified: NSE 4 Network Security Professional NSE 7 Enterprise Firewall Trained: SIEM FortiAuthenticator Cloud Security for Azure I am experienced in Secure Enterprise Network, Network Security, Cloud...

Fred C.
$150/hr
  • Trophy Icon Network Security
  • Cisco Meraki
  • Palo Alto Firewalls
  • Cisco Certified Network Associate
  • Cisco ASA
  • Cisco PIX
  • Cisco Certified Network Professional
  • Cisco Router
  • Cisco ISE
  • Cisco IOS

I am a Los Angeles, CA based network engineer/architect with over 14 years of Cisco routers, switches, wireless, and firewall experience. I can troubleshoot any network issues on WAN/LAN/WLAN. I have a flexible full time job as a network architect that allows me to freelance on the side. I help clients design and build efficient networks that is best suited for the client and their business. I have an active CCNP R&S and CCNP Enterprise certification. I have experience with the following: -Cisco firewalls, routers, switches, wifi -Palo Alto firewalls -SonicWall firewalls -Meraki firewalls, switches, wifi -Ubiquiti/UniFi firewalls,...

James T.
$225/hr
  • Trophy Icon Network Security
  • Linux System Administration
  • Windows Administration
  • Virtualization
  • Web Hosting
  • Email Design
  • Network Design
  • Network Monitoring
  • Network Planning
  • Network Administration
  • System Installation & Upgrades
  • Network Engineering
  • Docker
  • NGINX
  • System Monitoring

Hey, I'm James. I've been a self-employed business network and server admin for 21+ years. I've worked with all flavors of Linux and Windows for some of the best businesses in the country. My average customer that I've worked with has been with me over 10 years. I specialize in analyzing current infrastructure and determining the needs of my clients then providing a written plan to correct any issues and protect the business systems from hackers and cryptolockers. In one of my recent projects, I consulted with a six billion dollar, publicly traded company to completely redesign their infrastructure to have redundant firewalls, VMWare...

Tristan C.
$100/hr
  • Trophy Icon Network Security
  • PHP
  • MySQL
  • Laravel
  • VMware Administration
  • Ubiquiti
  • SSL
  • Network Administration
  • System Administration
  • Email Handling
  • Domain Migration
  • IT Incident Troubleshooting
  • Twilio API
  • Email Deliverability
  • Web Hosting
  • DNS

With a degree in Information and Network Technology and several certifications held, I am more than qualified to handle whatever IT task you may need! I have extensive technical knowledge and hands on expertise in: -- Web Development (PHP, Laravel, HTML, CSS, Vue, JavaScript, jQuery) -- Network & Systems Administration (LAN/WAN/WLAN, VPN, DNS, DHCP, Active Directory, etc.) -- Desktop Administration (Windows, Mac OS, Ubuntu and various other Linux distros) -- Database Administration (MySQL, MS SQL) -- Virtual Infrastructure Administration (VMware ESXI, Hyper-V) -- Email Hosting, Email Authentication, Email Deliverability, Email Migrations...

Ankit J.
$42/hr
  • Trophy Icon Network Security
  • CI/CD Pipelines
  • Linux System Administration
  • Microservice
  • Google Cloud Platform
  • Amazon Web Services
  • Kubernetes
  • DevOps
  • Windows Administration
  • Troubleshooting
  • Microsoft Azure
  • Terraform
  • Azure
  • Azure DevOps
  • Deployment Automation
  • Configuration Management

I've nearly 14 Years of experience with Small, Medium & Enterprise companies Implementing and Managing various IT Solution. I have good Expertise on Cloud IaaS & PaaS Solutions, Linux & Windows System Administration, DevOps Engineering. I have been involved in wide range of projects concerning the Planning, R&D, Execution and Maintenance. Since last 5 years as Freelancer/Consultant I have delivered many project on DevOps, GCP, Azure, AWS Clouds, linux & Windows server, Automation, CI/CD Pipeline with Jenkins, Azure DevOps Pipeline, TeamCity, Bitbucket Pipeline on various Technologies like; .Net, .Net Core, Java, Nodejs, Dockerization,...

Oleksandr D.
$60/hr
  • Trophy Icon Network Security
  • Linux System Administration
  • Malware
  • Web Hosting
  • FreeBSD
  • Network Administration
  • DNS
  • WordPress
  • Ubuntu
  • CentOS
  • SSL

I am system administrator with 15 years experience. I have solid technical skills in various areas of IT operations/administration: - DevOps (automatic provision using SaltStack, Ansible); - Linux (CentOS, Debian, Ubuntu, RHEL) and FreeBSD maintenance; - Cloud hosting (AWS, Azure, DigitalOcean); - Virtualization: (Docker, VirtualBox, Vagrant, OpenVZ); - Web servers (apache, nginx); - Databases (MySQL, PostgresQL, Mongo); - Monitoring (Zabbix) - Bash programming; - Mail servers (postfix, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot); - Networking (DHCP, DNS, VPN, OpenVPN, firewalls: iptables/ipfw, proxies) I familiar with...

Brian W.
$125/hr
  • Trophy Icon Network Security
  • Cisco Certified Internetwork Expert
  • VMWare
  • Storage Area Network
  • Cisco Meraki
  • Network Equipment

I have been in the IT field for over 16 years. I have held positions from engineering up to and including principal architect. I have experience on the pre and post sales side of the consulting field and enjoy coming up with solutions for customers. I hold a Cisco CCIE in Routing & Switching and have experience in data center technologies such as virtualization, storage, and enterprise networking.

Arfaoui M.
$25/hr
  • Trophy Icon Network Security
  • Python
  • Penetration Testing
  • Reverse Engineering
  • Linux
  • Web Scraper
  • Web App Penetration Testing
  • Information Security
  • C++
  • Security Analysis
  • C#
  • Security Infrastructure
  • Kali Linux
  • Vulnerability Assessment
  • Security Engineering

✅ A hard-working cybersecurity Engineer driven by passion and curiosity. ✅ I provide Cyber security consultation ✅ Cyber security training ✅ Network Penetration Testing ✅ Active Directory Penetration Testing ✅ Web penetration testing ✅ Vulnerabilities Assessment ✅ Trained to deliver professional penetration testing reports. ✅ Cyber security training labs Development ✅ CTF Labs development ✅ CTF Player; Member of Fword team (currently TOP1 hacking team in Tunisia And TOP 50 worldwide for the year 2021). ✅ Expert reverse engineer with experience in reversing and cracking windows, Linux, and mobile applications. ✅ Have a good experience as a...

Eric V.
$150/hr
  • Trophy Icon Network Security
  • Windows Administration
  • Vulnerability Assessment
  • Penetration Testing
  • Linux System Administration
  • Cisco Router

I have been in the Information Technology and Security business for over 20 years. I have received certifications from Mile2 for C)ISSO (Information System Security Officer), C)PEH (Professional Ethical Hacker) and C)PTE (Penetration Testing Engineer) and GIAC GMON (Continuous Monitoring) and GIAC GNFA (Network Forensics Analyst). I currently monitor networks for DoD contract clients and handle penetration testing for clients of website hosting companies I contract for. I am also a volunteer security professional for the State of Michigan and handle incident response.

Bilal Q.
$19/hr
  • Trophy Icon Network Security
  • Industrial Engineering
  • Windows XP
  • Article Writing
  • Article Rewriting
  • Internet Research
  • Content Writing
  • Press Release Writing
  • Product Description
  • Market Research
  • Electrical Engineering

Objective: To provide my clients with the best content I am a hard-working, disciplined and creative writer. Technical writing is my area of expertise. I can help you with all your content needs. Please contact if you are looking for; - Well-structured content - Catchy headlines - SEO optimized content - 100% unique content - Selling product descriptions Being an experienced industrial worker, I can breakdown difficult concepts to produce accessible content for average readers. So, look no further if you want accurate and engaging copy! Just hit the message button and that’s all.

Vitalij K.
$15/hr
  • Trophy Icon Network Security
  • Linux System Administration
  • Apache HTTP Server
  • NGINX
  • SSL
  • Zabbix
  • DigitalOcean
  • PHP
  • cPanel
  • Ubuntu
  • Linux
  • Virtual Private Server
  • MySQL
  • Website Development
  • Network Administration
  • CentOS

Professional System Administrator: Building, Installing, Configure, Fix errors. Developer: PHP, MySQL. Experience: 5+ years. Business and Individual clients wellcome! -Yes, I am working quickly. -Yes, I will answer on any questions. -Yes, I will do it cheap

Jason L.
$125/hr
  • Trophy Icon Network Security
  • Network Administration
  • DHCP
  • VoIP
  • Ubiquiti
  • Cisco Meraki
  • Cisco Router
  • Unify
  • Network Design
  • Network Planning
  • Computer Network
  • Internet Protocol Security
  • Virtual LAN
  • Network Equipment
  • Firewall
  • PfSense

Experienced Network Engineer. Everything from Routing, Switching, WiFi, Designing, Troubleshooting. I started my career owning an Internet Service Provider and have worked in IT networking my entire career. I'm looking to expand my services by contracting projects for clients remotely. Currently working in with many network technologies at an expert level. Recent 2020 projects in: Cisco, Ubiquiti, Cisco Meraki, Many VOIP solutions, etc.

$NaN/hr

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Inside IT Security: How to Protect Your Network from Every Angle

Network security. Cyber security. Endpoint security. These different, often overlapping arms of IT security can get confusing. As hackers get smarter, it’s increasingly important to know what each does and how to implement them into your own network.

In the wake of the highly-connected Internet of Things (IoT) and the rise of the cloud, we’re facing increased vulnerabilities to our networks—networks that are less monolithic, legacy architectures and more distributed, microservice-based networks. With large-scale data breaches making headlines, whether you’re a small startup or an enterprise organization, security should be a top priority.

In this article, we’ll explore the different types of IT security and what technologies and methods are used to secure each so you can arm your network with the people and plans you need to have excellent lines of defense in place and keep attacks at bay.

The IT security chain

Why are there so many types of IT security? The more links in a network’s chain, the more opportunities for hackers to find their way in. Each component requires its own subsequent security measures—with many of them overlapping and working in tandem, much like the actual components of a network do.

It’s also important to note that with security, there’s no one-size-fits-all approach. Every network is different and requires skilled professionals to create tailored plans across all fronts: apps, databases, network devices, cloud servers, IT infrastructures, and the often weakest link in the security chain: users. These security plans are living, breathing things that need to be updated, upgraded, and patched on a constant basis, too.

Let’s start broad and work our way into narrower fields of security.

It all boils down to information: information security, IT security, and information assurance

Information security and information technology (IT) security sound similar, and are often used interchangeably, but they’re slightly different fields. When we’re talking about information security (or infosec), we’re actually referring to protecting our data—whether that’s physical or digital. IT security is a bit more specific in that it’s only referring to digital information security.

IT security pretty much covers all of the types of security within a network, from components like databases and cloud servers to applications and the users remotely accessing the network. They all fall under the IT security umbrella.

Within this is another term to know: information assurance. This means that any important data won’t be lost or stolen in the event of an attack or a disaster—whether that’s a tornado wiping out a server center or hackers breaking into a database. It’s commonly addressed with things like backups and offsite backup databases and rests on three main pillars: confidentiality, integrity, and availability (CIA). These philosophies carry over into every other aspect of security, whether it’s application security or wireless security.

IT security experts (also, system administrators and network admins, which we’ll talk about next) are one of the most important team members you can hire. They’re responsible for the safety and security of all of a company’s hardware, software, and assets, and regularly audit back-end systems to ensure they’re airtight. Through security analysis, they can identify potential security problems and create “protect, detect, and react” security plans.

Network security: the best defenses

Network security is anything you do to protect your network, both hardware and software. Network administrators (or system administrators) are responsible for making sure the usability, reliability, and integrity of your network remains intact. A hacker is capable of getting into a network and blocking your access, for example by holding a system hostage for a bitcoin ransom. You need an excellent defense in place to ensure you’re protected.

Detecting weaknesses in a network can be achieved through:

Security engineering: the practice of protecting against these threats by building networks to be safe, dependable, and secure against malicious attacks. Security engineers design systems from the ground up, protecting the right things in the right ways. If a software engineer’s goal is to ensure things do happen (click here, and this happens), a security engineer’s goal is to ensure things don’t happen by designing, implementing, and testing complete and secure systems.

As a part of security engineering, there are proactive measures to predict where vulnerabilities might lie and reinforce them before they’re hacked:

  • Vulnerability assessment: Engineers identify the worst case scenarios and set up proactive plans. With security analysis software, vulnerabilities in a computer, network, or communications infrastructure are identified and addressed.
  • Penetration testing: This entails deliberately probing a network or system for weaknesses.
  • Network intrusion detection systems (NIDS): This type of software monitors a system for suspicious or malicious activity.

Network admins are able to target threats (whether through suspicious activity or large queries to a database), then halt those attacks, whether they’re passive (port scanning) or active, like:

  • Zero-day attacks, also called zero-hour attacks—attacks on software vulnerabilities that often occur before the software vendor is aware of it and can offer a patch. Or, hackers will initiate attacks on the software vulnerability the day that it’s made public there’s an issue, before users can install patches (hence the name “zero day”)
  • Denial of service attacks
  • Data interception and theft
  • Identity theft
  • SQL injection

Other methods of protecting networks include:

  • IT Security frameworks: These act like blueprints for a company to set up processes and policies for managing security in an enterprise setting. Which a company uses can depend on the industry and compliance requirements. COBIT is popular among larger, publicly traded companies, ISO 27000 Series is a broad set of standards that can be applied to a number of industries, and NIST’s SP 800 Series is used in government industries, but can be applied elsewhere.
  • Password “salt and peppering”: Adding salt, or random data, to a password makes common passwords less common. A pepper is also a random value attached to the password, which is helpful in slowing hackers down.
  • Authorization, authentication, and two-factor authentication (sometimes sent via SMS, although this can prove vulnerable as well)
  • Virtual Private Networks (VPNs)
    • Application whitelisting, which prevents unauthorized apps from running on a computer
    • Firewalls: Block unauthorized access to a network or data interceptions
    • Honeypots: These are like decoy databases that attract hackers but don’t house any important information.
  • Anti-virus software
  • Encryption—decoding data, in transit or at rest, including end-to-end encryption often used in messaging apps and platforms that only allows encrypted messages to be read by sender and receiver

Within network security is also content security, which involves strategies to protect sensitive information on the network to avoid legal or confidentiality concerns, or to keep it from being stolen or reproduced illegally. Content security largely depends on what information your business deals in.

Endpoint security: securing the weakest link

It’s said that users are often the weakest link in the security chain, whether it’s because they’re not properly educated about phishing campaigns, mistakenly give credentials to unauthorized users, download malware (malicious software), or use weak passwords. That’s why endpoint security is so crucial—it protects you from the outside in.

Endpoint security technology is all about securing the data at the place where it both enters and leaves the network. It’s a device-level approach to network protection that requires any device remotely accessing a corporate network to be authorized, or it will be blocked from accessing the network. Whether it’s a smartphone, PC, a wireless point-of-sale, or a laptop, every device accessing the network is a potential entry point for an outside threat. Endpoint security sets policies to prevent attacks, and endpoint security software enforces these policies.

If you’ve ever accessed a network through a virtual private network (VPN), you’ve seen endpoint security in action. Malware is one of the core threats addressed by endpoint security, including remote access trojans (RATs), which can hack into a laptop and allow hackers to watch you through your webcam.

Internet security: guarding against cyber crimes

The internet itself is considered an unsecured network—a scary truth when we realize it’s essentially the backbone for how we give and receive information. That’s where internet security (or cyber security consulting) comes in, and it’s a term that can get pretty broad, as well. This branch of security is technically a part of computer security that deals specifically with the way information is sent and received in browsers. It’s also related to network security and how networks interact with web-based applications.

To protect us against unwittingly sharing our private information all over the web, there are different standards and protocols for how information is sent over the internet. There are ways to block intrusions with firewalls, anti-malware, and anti-spyware—anything designed to monitor incoming internet traffic for unwanted traffic or malware like spyware, adware, or Trojans. If these measures don’t stop hackers from getting through, encryption can make it harder for them to do much with your data by encoding it in a way that only authorized users can decrypt, whether that data is in transit between computers, browsers, and websites, or at rest on servers and databases.

To create secure communication channels, internet security pros can implement TCP/IP protocols (with cryptography measures woven in), and encryption protocols like a Secure Sockets Layer (SSL), or a Transport Layer Security (TLS).

Other things to have in an internet security arsenal include:

  • Forms of email security
  • SSL certificates
  • WebSockets
  • HTTPS (encrypted transfer protocols)
  • OAuth 2.0, a leading authorization security technology
  • Security tokens
  • Security software suites, anti-malware, and password managers
  • Frequently updating and installing security updates to software, e.g., Adobe Flash Player updates
  • Encryption, and end-to-end encryption

Cloud security: protecting data that’s here, there, and everywhere

Much of what we do over the web now is cloud-based. We have cloud-based servers, email, data storage, applications, and computing, which means all of the communication between onsite and the cloud needs to be secure, too. With all of this connectivity and the flowing of (sometimes sensitive) information comes new concerns with privacy and reliability—and the cloud can be notoriously vulnerable. This has given way to a new subdomain of security policies: cloud computing security.

Computer security, network security, and information security as a whole all need to be optimized for the cloud. For businesses that use public clouds, private clouds, or a hybrid cloud—information is getting exchanged between the two regularly and needs to be protected.

Building a cloud security framework involves creating a strategic framework for how all operations will happen in a cloud environment, managing access, protecting data, and more.

Application security: coding apps to be safe from the ground up

A lot of the internet security focus is on patching vulnerabilities in web browsers and operating systems, but don’t neglect application security—a majority of internet-based vulnerabilities come from applications. By coding applications to be more secure from the start, you’re adding a more granular layer of protection to your internet and network security efforts, and saving yourself a lot of time and money.

App security does rest on top of many of the types of security mentioned above, but it also stands on its own because it’s specifically concerned with eliminating gaps and vulnerabilities in software at the design, development, and deployment stages. Security testing (which should be conducted throughout the code’s lifecycle) digs through the app’s code for vulnerabilities, and can be automated during your software development cycle.

Choosing a language, framework, and platform with extra security fortifications built in is paramount, too. For example, Microsoft’s .NET framework has a lot of built-in security, and the Python Django-style Playdoh platform addresses application security risks. Rising in popularity is the Spring Security framework, a Java framework known for excellent built-in authentication and authorization measures, and the PHP framework Yii prioritizes security, as well.

Aside from framework choice, there are a few strategies to bolster application security, including:

  • Ensuring TLS
  • Authentication and authorization measures
  • Data encryption
  • Sandboxing applications
  • Secure API access
  • Session handling

Not sure where to start? Enlist the help of a network security freelancer today

By adopting a proactive security stance, educating your users, and taking advantage of the latest in authentication measures, you’ll be better able to prevent, detect, and strengthen your company against attacks. However, it’s important to remember that securing your network isn’t a one-time thing—it’s an ongoing process that needs to be constantly occurring and evolving along with your website and organization to ensure you’re protected in the face of the ever-changing landscape of security threats. Luckily, there are plenty of security experts with a variety of specialties on Upwork you can hire to help assess your network for vulnerabilities and create a custom security plan—browse network security freelancers today to get started. You can also utilize IT services on Upwork that matches you with proven IT talent.

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