Network security
Enterprise cyberdefense strategies must include network security best practices. Get advice on essential network security topics such as remote access, VPNs, zero-trust security, NDR, endpoint management, IoT security, hybrid security, Secure Access Service Edge, mobile security and more.
Top Stories
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Feature
11 Aug 2025
How to use Nmap to scan ports: A complete tutorial
Nmap is a versatile open source security tool that scans ports to identify vulnerabilities, test firewall rules, inventory networks and troubleshoot connectivity issues. Continue Reading
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Tip
08 Aug 2025
How to prevent DoS attacks and what to do if they happen
The worst DoS attacks are like digital tsunamis that put critical business operations at risk. Learn how they work, ways to stop them and how systems can withstand the flood. Continue Reading
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Feature
21 May 2021
How to secure remote access for the hybrid work model
With the post-COVID-19 hybrid work model taking shape, discover the technologies and trends analysts and IT leaders view as the anchors to ensure secure remote access. Continue Reading
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News
20 May 2021
CrowdStrike breaks down 'Golden SAML' attack
The nightmare scenario, demonstrated at RSA Conference 2021, was used by threat actors in the SolarWinds breach and gave them control over both cloud and on-premises systems. Continue Reading
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News
19 May 2021
Cisco shares lessons learned in zero-trust deployment
The networking giant explained at RSA Conference 2021 how it was able to deploy a company-wide zero trust model in less than six months, and what it learned along the way. Continue Reading
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Tip
19 May 2021
How to build a cloud security observability strategy
Security observability in the cloud involves more than workload monitoring. Read up on the essential observability components and tools needed to reap the security benefits. Continue Reading
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Feature
19 May 2021
12 essential features of advanced endpoint security tools
In addition to protecting an organization's endpoints from threats, IT administrators can use endpoint security tools to monitor operation functions and DLP strategies. Continue Reading
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Feature
14 May 2021
Endpoint security strategy: Focus on endpoints, apps or both?
Companies know how to secure traditional endpoints, but what about mobile devices outside the network? They should decide if they want to protect devices, apps or both. Continue Reading
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Tip
14 May 2021
Enterprises mull 5G vs. Wi-Fi security with private networks
While Wi-Fi security can be implemented just as securely as 5G, mechanisms built into 5G offer some compelling benefits to enterprises considering private 5G networks. Continue Reading
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News
13 May 2021
'FragAttacks' eavesdropping flaws revealed in all Wi-Fi devices
Security researcher Mathy Vanhoef said every Wi-Fi device is impacted by at least one of the 12 vulnerabilities, and most devices are vulnerable to several of the flaws. Continue Reading
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Feature
10 May 2021
From EDR to XDR: Inside extended detection and response
As the definition of endpoints evolves, so too must the technology to protect them. Enter extended detection and response, or XDR -- one of cybersecurity's hottest acronyms. Continue Reading
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News
06 May 2021
'BadAlloc' vulnerabilities spell trouble for IoT, OT devices
A week after Microsoft revealed 25 memory allocation vulnerabilities in several IoT and OT products, some devices have been patched, while others have not. Continue Reading
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News
26 Apr 2021
Hackers targeting VPN vulnerabilities in ongoing attacks
As remote work increased during the pandemic, threat actors increasingly targeted known vulnerabilities. Continue Reading
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News
21 Apr 2021
Zero-day flaw in Pulse Secure VPN exploited in attacks
A remote code execution vulnerability found in Pulse Secure VPN appliances has been exploited in attacks affecting government, defense and financial organizations. Continue Reading
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Tip
16 Apr 2021
6 SSH best practices to protect networks from attacks
SSH is essential, but default installations can be costly. Auditing and key management are among critical SSH best practices to employ at any organization. Continue Reading
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Tip
15 Apr 2021
Unify on-premises and cloud access control with SDP
One security framework available to organizations struggling with on-premises and cloud access control issues is a software-defined perimeter. Learn how SDP can help. Continue Reading
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News
08 Apr 2021
Cring ransomware attacking vulnerable Fortigate VPNs
A vulnerability impacting Fortinet's Fortigate VPN, first disclosed and patched in 2019, is being exploited by Cring ransomware operators to extort bitcoin from enterprises. Continue Reading
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Tip
07 Apr 2021
MDR vs. MSSP: Why it's vital to know the difference
When assessing MDR vs. MSSP, the key is understanding why the two aren't interchangeable and how each handles response. Continue Reading
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Tip
01 Apr 2021
5 endpoint security best practices to keep company data safe
With an expanding company perimeter, it's time to implement these endpoint security best practices, from asset discovery to device profiling. Continue Reading
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Feature
22 Mar 2021
How to set up Palo Alto security profiles
Learning how to build and implement security profiles and policies can help novice admins make sure they use Palo Alto Networks firewalls effectively to protect their network. Continue Reading
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Feature
22 Mar 2021
Author's advice on Palo Alto firewall, getting started
Interfaces, licenses, policies -- getting started with a Palo Alto Networks firewall can be confusing. Here, the author of 'Mastering Palo Alto Networks' offers his advice. Continue Reading
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Guest Post
18 Mar 2021
With 5G, security by design is a must
New tech means new security strategies. Deloitte's Wendy Frank and Shehadi Dayekh explain why this is especially true with 5G. Security by design, they advise, is a critical approach. Continue Reading
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Tip
18 Mar 2021
6 AIOps security use cases to safeguard the cloud
Explore six AIOps security use cases in cloud environments, such as threat intelligence analysis and malware detection, as well as expert advice on implementation considerations. Continue Reading
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Tip
15 Mar 2021
Endpoint security vs. network security: Why both matter
As the security perimeter blurs, companies often debate the merits of endpoint security vs. network security. However, it shouldn't be an either-or decision. Continue Reading
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News
04 Mar 2021
Microsoft's security roadmap goes all-in on 365 Defender
Microsoft 365 Defender's new threat analytics feature includes step-by-step reports on attacks, vulnerabilities and more, as well as links to relevant alerts in each report. Continue Reading
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News
11 Feb 2021
Oldsmar water plant computers shared TeamViewer password
In addition to the advisory published by Massachusetts officials, the FBI issued a private industry notification Tuesday that referenced poor password security. Continue Reading
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News
26 Jan 2021
Akamai: Extortion attempts increase in DDoS attacks
New research from Akamai Technologies shows record-breaking DDoS attacks surged in 2020 while extortion-related campaigns against a variety of targets also increased. Continue Reading
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Tip
14 Jan 2021
Extended detection and response tools take EDR to next level
Extended detection and response tools offer new capabilities -- among them greater visibility -- to enterprises searching for better ways to protect their endpoints. Continue Reading
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Quiz
23 Dec 2020
Endpoint security quiz: Test your knowledge
Test your knowledge of SASE, split tunneling, and device discovery tool capabilities and best practices in this endpoint security quiz for IT professionals. Continue Reading
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Tip
16 Dec 2020
6 remote workforce cybersecurity strategies for 2021
Remote worker data security has quickly evolved into a top concern for IT security. Here are six strategies to ensure remote workforce cybersecurity in 2021. Continue Reading
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Feature
10 Dec 2020
Zero-trust initiatives rely on incremental security improvements
Despite implementation challenges, enterprise security leaders see zero trust as the security model of the future and are moving forward with adoption plans. Continue Reading
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Tip
04 Dec 2020
Counter threats with these top SecOps software options
SecOps tools offer many capabilities to address common threats enterprises face, including domain name services, network detection and response, and anti-phishing. Continue Reading
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Tip
20 Nov 2020
What are the biggest hardware security threats?
Hardware security threats -- and strategies to overcome them -- are evolving as enterprises increasingly install autonomous capabilities for smart building and IoT projects. Continue Reading
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Tip
03 Nov 2020
Using SDP as a VPN alternative to secure remote workforces
Software-defined perimeter has been touted as a VPN alternative for secure remote access. How do you know if SDP or a traditional VPN is right for your company? Continue Reading
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Feature
02 Nov 2020
Weighing the future of firewalls in a zero-trust world
Cybersecurity pros have been predicting the firewall's demise for years, yet the device is still with us. But does it have a place in zero-trust networks? One analyst says yes. Continue Reading
- 02 Nov 2020
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Opinion
02 Nov 2020
Cybersecurity for remote workers: Lessons from the front
Tackle the security challenges COVID-19 wrought by using this playbook from an experienced disaster-zone responder. Continue Reading
- 02 Nov 2020
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Tip
29 Oct 2020
Understanding the zero trust-SDP relationship
Zero trust is a complicated framework that spans the IT stack. Find out how software-defined perimeter can address zero trust's network-level access requirements. Continue Reading
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Guest Post
23 Oct 2020
Why SASE should be viewed as an evolution, not revolution
The hype around secure access service edge (SASE) is palpable. But by taking a step back, security leaders can align an emerging trend to their long-term goals. Continue Reading
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Tip
22 Oct 2020
How to prepare for a zero-trust model in the cloud
Zero-trust security in the cloud is different than it is on premises. Learn the concepts and policies to effectively achieve a zero-trust model in the cloud. Continue Reading
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Tip
16 Oct 2020
How enterprise cloud VPN protects complex IT environments
Do you know how enterprise cloud VPN differs from a traditional VPN? Explore how cloud VPN works and whether it's the right option for your hybrid IT environment. Continue Reading
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Tip
28 Sep 2020
Critical IIoT security risks cloud IoT's expansion into industry
The convergence of IoT with industrial processes increases productivity, improves communications and makes real-time data readily available. But serious IIoT security risks must be considered as well. Continue Reading
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Tip
18 Sep 2020
Top 4 firewall-as-a-service security features and benefits
Firewall-as-a-service offerings implement security policies across consolidated traffic headed to all locations. Learn about four security features and benefits of FWaaS. Continue Reading
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Tip
10 Sep 2020
Combination of new, old tech driving remote access security
The massive shift to home-based workforces left IT vulnerable to unexpected threats, but organizations are combining old and new strategies to maintain remote access security. Continue Reading
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News
31 Aug 2020
Cisco issues alert for zero-day vulnerability under attack
Cisco discovered attempted exploitation of a high-severity vulnerability found in the IOS XR software used in some of its networking equipment. Continue Reading
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Answer
28 Aug 2020
Site-to-site VPN security benefits and potential risks
Not every enterprise needs the functionality of a standard VPN client. A site-to-site VPN may be a better choice for some companies, but it's not without risk. Continue Reading
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Tip
25 Aug 2020
Infrastructure as code's security risks and rewards
Infrastructure as code can yield some exciting security benefits for enterprises, but they each come with drawbacks. Learn more about the most critical IaC security impacts. Continue Reading
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Feature
21 Aug 2020
Cybersecurity new normal needs change in process, CISOs say
As CISOs face an increasingly remote workforce, they need to confront past security mistakes, while adjusting to cybersecurity's new normal. Continue Reading
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Tip
18 Aug 2020
10 RDP security best practices to prevent cyberattacks
Securing remote connections is critical, especially in a pandemic. Enact these RDP security best practices at your organization to prevent ransomware, brute-force attacks and more. Continue Reading
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News
06 Aug 2020
Ripple20 vulnerabilities still plaguing IoT devices
Months after Ripple20 vulnerabilities were reported, things haven't gotten much better, say experts at Black Hat USA 2020. In fact, the world may never be fully rid of the flaws. Continue Reading
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Feature
22 Jul 2020
Zero-trust framework ripe for modern security challenges
What is zero-trust security, and why deploy it now? Analysts explain its importance in the current IT era and how to get started with evaluation and implementation. Continue Reading
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News
29 Jun 2020
Record-setting DDoS attacks indicate troubling trend
Akamai Technologies recently mitigated two of the largest DDoS attacks ever recorded on its platform, including a massive 809 million packets per second attack against a bank. Continue Reading
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News
22 Jun 2020
Microsoft acquires CyberX to strengthen IoT security offering
Microsoft is acquiring CyberX to boost its IoT security offerings, though it's unknown whether CyberX will remain a separate entity or be integrated into Microsoft. Continue Reading
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Answer
19 Jun 2020
How to prevent network eavesdropping attacks
One of the biggest challenges of network eavesdropping attacks is they are difficult to detect. Read about prevention measures to help keep your network safe from snoopers and sniffers. Continue Reading
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News
16 Jun 2020
ZDI drops 10 zero-day vulnerabilities in Netgear router
Trend Micro's Zero Day Initiative published 10 vulnerabilities in Netgear's R6700 router that have gone unpatched for seven months. Continue Reading
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Feature
11 Jun 2020
VPC security best practices and how to implement them in AWS
To best secure network access, AWS administrators need to create rules for network resources. Learn how to implement Amazon VPC security best practices in this book excerpt. Continue Reading
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Feature
11 Jun 2020
Overcome AWS security vulnerabilities with VPCs, IAM
Securing network access in AWS requires the right rules to be in place. Learn more about Virtual Private Clouds and how implementing them can prevent common cloud security attacks. Continue Reading
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Answer
11 Jun 2020
Identifying and troubleshooting VPN session timeout issues
Troubleshooting VPN session timeout and lockout issues should focus first on isolating where the root of the problem lies -- be it the internet connection, the VPN vendor or the user device. Continue Reading
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News
09 Jun 2020
'CallStranger' vulnerability affects billions of UPNP devices
A new vulnerability in the Universal Plug and Play protocol could be used to exfiltrate enterprise data and launch DDoS attacks, and patches may not arrive for a long time. Continue Reading
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News
04 Jun 2020
Remote work cybersecurity a concern during pandemic
Recent surveys by NordVPN and Kaspersky found that more than 60% of employees use personal devices as they work from home due to the coronavirus -- which creates cybersecurity issues. Continue Reading
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Tip
01 Jun 2020
How to fortify IoT access control to improve cybersecurity
Security technology is still playing catch-up with the new risks and attack vectors associated with IoT. Learn how to improve IoT access control and identity management here. Continue Reading
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Feature
01 Jun 2020
SASE adoption accelerating as workforce goes remote
Experts suggest enterprises should consider SASE adoption for network security as the remote workforce grows in order to reduce cost and complexity. Continue Reading
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Answer
27 May 2020
Is VPN split tunneling worth the security risks?
Enabling VPN split tunneling may increase speed and decrease bandwidth use and costs, but it also increases the number of security vulnerabilities faced. Continue Reading
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News
18 May 2020
Advent calls off Forescout acquisition
On what was scheduled to be the closing day, Forescout Technologies instead announced Advent International will not proceed with the $1.9 billion acquisition as planned. Continue Reading
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Tip
18 May 2020
How to balance secure remote working with on-site employees
Post-pandemic, organizations must strike the right balance between on-site and remote work security. Here's how to make sure your cybersecurity program is prepared. Continue Reading
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Quiz
06 May 2020
Test your cyber-smarts with this network security quiz
Show what you know about the topics covered in the May 2020 issue of Information Security magazine. If you get nine of 10 answers right, you'll also receive CPE credit! Continue Reading
- 01 May 2020
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Feature
01 May 2020
AI-powered cyberattacks force change to network security
Companies now face sophisticated enemies using AI and machine learning tools for their attacks. It's a world of new dangers for those defending network systems and data. Continue Reading
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Opinion
01 May 2020
Plan now for the future of network security
How to battle well-funded, technologically sophisticated threats and ensure high-quality network performance? CISOs need a plan to meet network challenges now and in the future. Continue Reading
- 01 May 2020
- E-Zine 01 May 2020
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News
27 Apr 2020
Zero-day flaw in Sophos XG Firewall exploited in attacks
Sophos released an emergency patch over the weekend for its XG firewalls after threat actors exploited a zero-day SQL vulnerability in the products to steal customer data. Continue Reading
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Feature
27 Apr 2020
Securing a remote workforce amplifies common cybersecurity risks
Securing a remote workforce during the pandemic has not only created unforeseen cybersecurity risks, but also magnified old ones with more employees using home networks. Continue Reading
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News
20 Apr 2020
Google unveils BeyondCorp Remote Access as VPN alternative
Google unveiled a new iteration of its zero-trust network offering with BeyondCorp Remote Access, which is designed to help remote workers securely connect to critical web apps. Continue Reading
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Tip
14 Apr 2020
Use an IoT security architecture to protect networks end to end
Organizations can reap benefits from IoT technology but only if it is properly secured. Learn the components of IoT network architecture and the unique security considerations of each. Continue Reading
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Tip
03 Apr 2020
Comparing SASE vs. traditional network security architectures
Today's dispersed environments need stronger networking and security architectures. Enter cloud-based Secure Access Service Edge -- a new model for secure network access. Continue Reading
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Answer
02 Apr 2020
Considering the differences in LAN vs. WAN security
Given the differences in the security of LAN and WAN, enterprises need to guard against insider threats, secure against unauthorized access and potentially secure the edge, too. Continue Reading
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Tip
25 Mar 2020
Answering the top IoT risk management questions
Vulnerable IoT devices are commonly installed on enterprise networks, putting IT on the lookout for security issues. Here are answers to the biggest IoT risk management questions. Continue Reading
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Tip
17 Mar 2020
4 tips to ensure secure remote working during COVID-19 pandemic
Don't let teleworkers compromise your enterprise's security. Follow these tips to ensure secure remote working in the event of a teleworker boom during a pandemic. Continue Reading
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News
05 Mar 2020
Amid expansion, BlackBerry security faces branding dilemma
BlackBerry continues its push into security by addressing a number of endpoint devices. But analysts discuss whether the former mobile device maker has a perception problem. Continue Reading
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Answer
26 Feb 2020
Wired vs. wireless network security: Best practices
Explore the differences between wired and wireless network security, and read up on best practices to ensure security with or without wires. Continue Reading
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News
05 Feb 2020
Cisco Discovery Protocol flaws jeopardize 'tens of millions' of devices
Armis Security disclosed five vulnerabilities, dubbed 'CDPwn,' in Cisco's Discovery Protocol, which impact 'tens of millions' of Cisco devices such as routers and IP phones. Continue Reading
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News
22 Jan 2020
Netgear under fire after TLS certificates found in firmware -- again
Security researchers revealed Netgear firmware exposed TLS certificate keys, but SearchSecurity discovered it wasn't the first time the issue had been reported to the vendor. Continue Reading
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News
17 Jan 2020
Unpatched Citrix vulnerability expands as mitigations fall short
Citrix discovered another product affected by last month's vulnerability, while security researchers found an attacker blocking exploits of the vulnerability. Continue Reading
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News
14 Jan 2020
Citrix patches for ADC and Gateway flaw to begin rolling out next week
Citrix announced security fixes on the way one month after disclosing a vulnerability in its ADC and Gateway appliances, which has already seen preliminary attacks in the wild. Continue Reading
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News
10 Jan 2020
Threat actors scanning for vulnerable Citrix ADC servers
Scans for vulnerable Citrix servers were discovered by security researchers following the disclosure of a remote code execution flaw in Citrix ADC and Gateway products. Continue Reading
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Tip
30 Dec 2019
IT vs. OT security -- and how to get them to work together
While IT and OT security have historically been separate, the advent of IoT is forcing the two together. Cross-pollinating IT with OT is critical to ensuring IoT security. Continue Reading
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Tip
19 Dec 2019
What cloud workload security tools and controls work best?
Read on to learn how to build a cloud security model that allows your team to embed controls and monitor deployment without getting in the way of business processes. Continue Reading
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Feature
19 Dec 2019
ICS security challenges and how to overcome them
Security cannot be an afterthought in internet-connected industrial control systems. IEEE member Kayne McGladrey offers best practices to stay safe in a connected world. Continue Reading
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Answer
19 Dec 2019
Host IDS vs. network IDS: Which is better?
Compare host IDS vs. network IDS through the pros and cons of each, and learn how more modern systems may be better suited to ensure effective enterprise security. Continue Reading
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Tip
17 Dec 2019
Perimeterless security still has borders -- and APIs need it
Many people believe perimeterless security means borders are a thing of the past. But virtual borders secure APIs needed by mobile users and cloud workloads. Check out how to manage them. Continue Reading
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Tip
05 Dec 2019
How to implement zero-trust cloud security
The nature of cloud environments and workloads is changing. Security team approaches must evolve in response. Learn how to implement zero-trust cloud security from expert Dave Shackleford. Continue Reading
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News
04 Dec 2019
NSS Labs drops antitrust suit against AMTSO, Symantec and ESET
NSS Labs dropped its antitrust suit against the Anti-Malware Testing Standards Organization, Symantec and ESET, ending a contentious legal battle in the endpoint security market. Continue Reading
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Answer
22 Nov 2019
What are the top network security techniques for modern companies?
Protecting the enterprise network remains integral to overall IT security. Here are the top network security techniques enterprises are using to protect data. Continue Reading
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Opinion
20 Nov 2019
What's the answer for 5G security?
Learn about the planning of 3GPP in developing specifications for 5G security in this synopsis of 5G Americas' white paper, 'The Evolution of Security in 5G.' Continue Reading
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Tip
19 Nov 2019
Boost network security visibility with these 4 technologies
The network is where it's at if you want to stop malicious actors. But first you need to up your network visibility. Learn about four technologies that can help. Continue Reading
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Tip
19 Nov 2019
Network visibility and monitoring tools now amp up security
Three technology trends are currently making network visibility even more central to security tools. Learn more about the impact of big data, AI and APIs. Continue Reading
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Tip
12 Nov 2019
A fresh look at enterprise firewall management
Enterprises need to know where and how to install firewalls for maximum protection. Find out firewall management best practices that can help protect your organization. Continue Reading
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News
05 Nov 2019
First BlueKeep attacks in the wild may be dark portents
Following months of warnings from law enforcement and the infosec community, the first BlueKeep exploit campaign was discovered in the wild and experts say it won't be the last. Continue Reading
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News
29 Oct 2019
Adobe exposure includes data on 7.5 million users
Adobe exposed data on 7.5 million users and employees and one expert says the incident highlights why production data shouldn't be used in test environments. Continue Reading
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News
22 Oct 2019
Forcepoint Web Security offering reaches for the edge
Forcepoint has delivered a web-based security tool leveraging elastic cloud gateway technology that allows admins to access content from any remote location. Continue Reading
