{"id":1008,"date":"2024-11-29T16:04:13","date_gmt":"2024-11-29T16:04:13","guid":{"rendered":"https:\/\/cybersecurityinfocus.com\/?p=1008"},"modified":"2024-11-29T16:04:13","modified_gmt":"2024-11-29T16:04:13","slug":"building-a-resilient-network-defense-with-network-based-intrusion-detection-systems","status":"publish","type":"post","link":"https:\/\/cybersecurityinfocus.com\/?p=1008","title":{"rendered":"Building a Resilient Network Defense with Network Based Intrusion Detection Systems"},"content":{"rendered":"
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Network based Intrusion Detection System (NIDS) is an important layer of security in the cybersecurity world. It essentially acts as a proactive guard, constantly scrutinizing network traffic activity \u2014 watching the data packets that travel across your devices for patterns that suggest signs of unauthorized access and other malicious behavior.\u00a0<\/span>\u00a0<\/span><\/p>\n

By bringing the highest level of network defense strategies and a full understanding of what an NID system is capable of, you have a greater chance of keeping your organizational data safe from this ongoing threat in cyberspace. But first, let\u2019s start with understanding \u2013 what is Network Intrusion Detection Systems<\/a>?<\/span><\/p>\n<\/div>\n<\/div>\n

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What is a Network based Intrusion Detection System?<\/h2>\n<\/div>\n<\/div>\n
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Network based intrusion detection system, or NIDS for short, is a fundamental security program used to monitor your network traffic to check if anything looks suspicious. It\u2019s a virtual lookout that is constantly screening the traffic flow, trying to spot anything that is inherently suspicious. Essentially an NIDS does what a firewall does, but instead of just blocking the known threats, it goes a step further by actively spotting patterns or anomalies to detect network intrusion.<\/span>\u00a0<\/span><\/p>\n

NIDS can be in one of two forms: it could either be inline or passive. An inline NIDS is located right in the network path: it monitors every single bit of traffic that passes through it. Passive NIDS on the other hand is placed at a tap for SPAN port where it gets a replica of the traffic that is being analyzed without blocking any of the actual traffic flow. Overall, passive notifications have all the advantages of an inline, but it doesn\u2019t intervene in the data process which means that the operation doesn\u2019t affect the actual traffic flow.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Step-by-Step Process for Setting Up NIDS<\/h2>\n<\/div>\n<\/div>\n
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Network<\/span> based intrusion <\/span>detect<\/span>ion entails monitoring and analyzing network traffic to <\/span>detect<\/span> network intrusion <\/span>or security threats.<\/span> Here\u2019s<\/span> a step-by-step guide to effectively\u00a0<\/span>set <\/span>up <\/span> network<\/span> based<\/span> intrusion <\/span>detect<\/span>ion:<\/span><\/p>\n<\/div>\n<\/div>\n

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1. Choose the Right NIDS Solution<\/h3>\n<\/div>\n<\/div>\n
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NI<\/span>DS software or hardware solution should be chosen by keeping the size of the network and the level of security<\/span> in mind<\/span>. <\/span>However, consider that traditional NIDS solutions have evolved into Network Detection and Response (NDR)<\/a> systems, which not only detect threats but also provide automated responses and deeper visibility into network activity, making them a more robust choice for modern security challenges.<\/span><\/p>\n<\/div>\n<\/div>\n

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2. Identify Critical Network Points<\/h3>\n<\/div>\n<\/div>\n
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Place NIDS sensors at<\/span> strategic<\/span> network points such as perimeter defenses, internal network segments, and high-traffic areas like servers and databases. Sensors should be placed in choke points where many of the network services traverse.<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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3. Baseline Network Traffic<\/h3>\n<\/div>\n<\/div>\n
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Monitor the network over time to<\/span> baseline a pattern so the tool can<\/span> distinguish between normal behavior and malicious activities.<\/span><\/p>\n<\/div>\n<\/div>\n

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4. Configure NIDS Rules<\/h3>\n<\/div>\n<\/div>\n
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Define rules or signatures to detect network intrusion attack types such as:<\/span>\u00a0<\/span><\/p>\n

Malware and Virus Signatures<\/span>Unusual Protocol Use<\/span>Port Scans<\/span>Denial of Service (DoS) Attacks<\/a><\/span>Unauthorized Access Attempts<\/span><\/p>\n

Ensure rules are updated regularly, either manually or through an automatic update service, to detect emerging threats.<\/span><\/span>\u00a0<\/span><\/p>\n<\/div>\n<\/div>\n

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5. Monitor Network Traffic in Real-Time<\/h3>\n<\/div>\n<\/div>\n
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Continuously <\/span>monitor<\/span> traffic and alerts in real-time.<\/span> NIDS solutions <\/span>generally capture<\/span> and analyze data packets using methods such as <\/span><\/span>deep packet inspection (DPI)<\/span><\/span> to detect malicious patterns in the payload.<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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6. Analyze Suspicious Activity<\/h3>\n<\/div>\n<\/div>\n
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When an alert is generated, investigate suspicious activities by analyzing the source and destination IP addresses, time of access, ports used, and the type of traffic. Look for patterns like:<\/span>\u00a0<\/span><\/p>\n

Large amounts of data are being transferred to unfamiliar external IPs (potential exfiltration).<\/span>Repeated login failures (brute-force attack).<\/span>Traffic to or from unexpected countries or regions.<\/span>\t\t\t\t\t\t<\/p><\/div>\n<\/div>\n

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7. Correlate with Other Systems<\/h3>\n<\/div>\n<\/div>\n
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Assist the NIDS alerts with other logs from other security tools like host-based IDS, antivirus <\/span>firewall<\/span>, and others<\/span>.<\/span><\/p>\n<\/div>\n<\/div>\n

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8. Respond to Intrusions<\/h3>\n<\/div>\n<\/div>\n
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Develop an incident response plan that dictates how to respond to various alerts. Take actions like:<\/span>\u00a0<\/span><\/p>\n

Blocking malicious IPs.<\/span>\u00a0<\/span>Quarantining affected systems.<\/span>\u00a0<\/span>Initiating a full forensic investigation to assess the damage and scope of the attack.<\/span>\t\t\t\t\t\t<\/p><\/div>\n<\/div>\n

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Recommended Reading<\/h3>\n\n
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The First 72-Hours: How to Approach the Initial Hours of a Security Incident<\/a><\/h3>\n<\/div>\n<\/div>\n
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\n\t\t\t\t\t\t\t\t\tRead More<\/span>
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9. Regularly Update NIDS<\/h3>\n<\/div>\n<\/div>\n
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NIDS systems should be updated on a regular basis to <\/span>detect<\/span> new threats.<\/span> This includes constantly updating <\/span>network <\/span>intrusion <\/span>detect<\/span>ion signatures, intrusion rules, and the software as soon as new versions are released.<\/span> However, modern Network Detection and Response (NDR) solutions offer an edge by using AI-driven analytics and behavioral monitoring, reducing reliance on manual updates while improving detection of emerging and sophisticated threats.<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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10. Review and Optimize<\/h3>\n<\/div>\n<\/div>\n
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Regularly review the NIDS logs to trim the system. Distinguish false positives and reduce nuisance hits by editing the rules.<\/span>\u00a0<\/span><\/p>\n

Network based intrusion detection is an ongoing process that requires vigilant monitoring, regular updates, and quick response to threats. By integrating it into a broader cybersecurity strategy, organizations can greatly enhance their defense against network-based attacks.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Common Challenges in Implementing NIDS Solutions<\/h2>\n<\/div>\n<\/div>\n
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Although Network Intrusion Detection Systems are vital for protecting network infrastructure, they <\/span>seem to bring<\/span> a range of challenges in terms of implementation. To ensure that the technology is implemented effectively, it is important to understand and address the issues that may arise. Here are some of the most frequent problems <\/span>associated <\/span>with the implementation of NIDS:<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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1. False Positives and False Negatives<\/h3>\n<\/div>\n<\/div>\n
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One of the most frequent problems associated with NIDS is <\/span>determining<\/span> how to avoid false alarms that may pose a serious threat to security specialists\u2019 work. Designing <\/span>optimal<\/span> detection algorithms is <\/span>a hard task<\/span>, as stringent mechanisms may start providing too many false alarms while more lenient settings may not be able to recognize true threats as such.<\/span><\/p>\n<\/div>\n<\/div>\n

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2. High Network Traffic<\/h3>\n<\/div>\n<\/div>\n
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High-traffic systems provide NIDS with a lot of information that needs to be inspected.<\/span> Therefore, the system may become <\/span>overwhelmed,<\/span> and the performance may plateau, which may be harmful and dangerous in terms of detecting and responding to ICD-related threats.<\/span><\/p>\n<\/div>\n<\/div>\n

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3. Encrypted Traffic<\/h3>\n<\/div>\n<\/div>\n
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M<\/span>ore and more organizations <\/span>have <\/span>started employing traffic encryption as a way to avoid data theft.<\/span> It <\/span>seems to be<\/span> very helpful<\/span> for digital <\/span>security,<\/span> but it creates blind spots for NIDS, as they are not able to detect or predict threats if they are encrypted.<\/span><\/p>\n<\/div>\n<\/div>\n

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4. Evolving Threats<\/h3>\n<\/div>\n<\/div>\n
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Cyber-attacks are continuously evolving, while threat actors develop new strategies and solutions for bypassing conventional or other types of NIDS. Thus, safety specialists <\/span>are required to<\/span> constantly update their detection rules and algorithms, which may be costly and time-consuming.<\/span><\/p>\n<\/div>\n<\/div>\n

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5. Integration with Other Security Tools<\/h3>\n<\/div>\n<\/div>\n
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NIDS solutions often need to work in tandem with other security systems, such as firewalls, SIEMs, and endpoint detection tools<\/a>. Ensuring seamless integration and communication between these systems can be complex, potentially creating silos of information that hinder overall network visibility.<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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How Fidelis Network\u00ae Tackles These Challenges<\/h2>\n<\/div>\n<\/div>\n
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The Fidelis Network Detection and Response solution is designed to address many of the concerns and difficulties typically associated with traditional NIDS. By leveraging advanced machine learning and behavioral analytics, Fidelis Network<\/a>\u00ae reduces false positives and false negatives so the security team can focus on genuine threats.<\/span>\u00a0<\/span><\/p>\n

Moreover, Fidelis employs efficient traffic inspection mechanisms that can be used to penetrate and process data in large quantities without performance loss. And it fully supports deep packet inspection, eliminating the blind spot of encrypted traffic.<\/span>\u00a0<\/span><\/p>\n

Fidelis Network\u00ae is also extremely scalable, whether in a small or large environment. Furthermore, the platform continuously updates its threat intelligence<\/a> and detection algorithms to stay ahead of evolving cyber threats.<\/span>\u00a0<\/span><\/p>\n

Lastly, for better integration, you can choose Fidelis Elevate<\/a>\u00ae, an Extended Detection and Response (XDR) solution as it ensures a unified approach to network security, to further enhance the capabilities of Fidelis NDR Solution across endpoints, networks, and cloud environments.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\tStrengthen your cybersecurity strategy now.\t\t\t\t\t<\/div>\n
\n\t\t\t\t\t\tLet Fidelis Elevate\u00ae help you detect and respond to threats in real time. Discover how to: \t\t\t\t\t<\/div>\n
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The post Building a Resilient Network Defense with Network Based Intrusion Detection Systems<\/a> appeared first on Fidelis Security<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Network based Intrusion Detection System (NIDS) is an important layer of security in the cybersecurity world. It essentially acts as a proactive guard, constantly scrutinizing network traffic activity \u2014 watching the data packets that travel across your devices for patterns that suggest signs of unauthorized access and other malicious behavior.\u00a0\u00a0 By bringing the highest level […]<\/p>\n","protected":false},"author":0,"featured_media":1009,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-1008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/1008"}],"collection":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1008"}],"version-history":[{"count":0,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/1008\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/media\/1009"}],"wp:attachment":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}