--- title: "#network-security articles | Hashnode" description: "Explore 454 articles tagged #network-security on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/network-security" --- Tag # #network-security 454 posts · 142 followers [Kazem Mortazavi](https://hashnode.com/@kazem-mortazavi) · [3d ago](https://hashnode.com/posts/defense-in-depth-in-practice-what-stops-an-attacker-after-the-firewall/6af067a362c865ab83972001) ### [Defense in Depth in Practice: What Stops an Attacker After the Firewall?](https://securityland.hashnode.dev/defense-in-depth-in-practice-what-stops-an-attacker-after-the-firewall?utm_source=hashnode&utm_medium=feed) Ask IT managers what their network security rests on, and most will name a firewall or an antivirus product. That is exactly the problem: no single point in a network is secure on its own. Defense in 2 min read · [securityland.hashnode.dev](https://securityland.hashnode.dev/defense-in-depth-in-practice-what-stops-an-attacker-after-the-firewall?utm_source=hashnode&utm_medium=feed) [Cyber Knight](https://hashnode.com/@cyberknight2479) · [3d ago](https://hashnode.com/posts/the-switch-has-no-patch-and-the-holes-don-t-even-have-names-yet/6af01e75b6c6ae12dd61f7a0) ### [The Switch Has No Patch — and the Holes Don't Even Have Names Yet](https://nulltrace.hashnode.dev/the-switch-has-no-patch-and-the-holes-don-t-even-have-names-yet?utm_source=hashnode&utm_medium=feed) D-Link just warned that its DGS-3130 switches carry multiple zero-day flaws. No CVE, no fix, no details — just a list of things to switch off. 5 min read · [nulltrace.hashnode.dev](https://nulltrace.hashnode.dev/the-switch-has-no-patch-and-the-holes-don-t-even-have-names-yet?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/the-switch-has-no-patch-and-the-holes-don-t-even-have-names-yet/6af01e75b6c6ae12dd61f7a0) [Kazem Mortazavi](https://hashnode.com/@kazem-mortazavi) · [Nov 4](https://hashnode.com/posts/sase-explained-why-backhauling-traffic-to-the-data-center-no-longer-works/6aeab9d8d5a216718f0ae8a0) ### [SASE Explained: Why Backhauling Traffic to the Data Center No Longer Works](https://securityland.hashnode.dev/sase-explained-why-backhauling-traffic-to-the-data-center-no-longer-works?utm_source=hashnode&utm_medium=feed) Picture a branch office whose staff spend the day in Microsoft 365 and a handful of cloud applications. Their traffic first travels to the headquarters data center, passes through the firewall and pro 2 min read · [securityland.hashnode.dev](https://securityland.hashnode.dev/sase-explained-why-backhauling-traffic-to-the-data-center-no-longer-works?utm_source=hashnode&utm_medium=feed) [sunal datanet hosting solutions](https://hashnode.com/@sunaldatanet) · [Nov 3](https://hashnode.com/posts/5/6ae9c4182dcdcdbf7c4e8ed5) ### [5 𝐅𝐢𝐫𝐞𝐰𝐚𝐥𝐥 𝐂𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐭𝐢𝐨𝐧 𝐂𝐡𝐞𝐜𝐤𝐬 𝐄𝐯𝐞𝐫𝐲 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐒𝐡𝐨𝐮𝐥𝐝 𝐏𝐞𝐫𝐟𝐨𝐫𝐦](https://datanetfortinet.hashnode.dev/5?utm_source=hashnode&utm_medium=feed) Explore 5 firewall configuration checks to improve network security, review access rules, strengthen IPS protection and secure remote access. 5 min read · [datanetfortinet.hashnode.dev](https://datanetfortinet.hashnode.dev/5?utm_source=hashnode&utm_medium=feed) [Cyber Knight](https://hashnode.com/@cyberknight2479) · [Oct 31](https://hashnode.com/posts/one-attack-every-0-44-seconds-the-ddos-war-just-got-smaller-and-harder-to-stop/6ae5967c9e8d424363b1a5ec) ### [One Attack Every 0.44 Seconds. The DDoS War Just Got Smaller — and Harder to Stop.](https://nulltrace.hashnode.dev/one-attack-every-0-44-seconds-the-ddos-war-just-got-smaller-and-harder-to-stop?utm_source=hashnode&utm_medium=feed) Cloudflare blocked 18.2 million network-layer attacks in three months. Almost all of them were short, small, and over before a human could react. That is the point. 6 min read · [nulltrace.hashnode.dev](https://nulltrace.hashnode.dev/one-attack-every-0-44-seconds-the-ddos-war-just-got-smaller-and-harder-to-stop?utm_source=hashnode&utm_medium=feed) [sunal datanet hosting solutions](https://hashnode.com/@sunaldatanet) · [Oct 30](https://hashnode.com/posts/fortinet-firewall-deployment-in-noida-a-practical-guide-for-businesses/6ae48a860b365b09ff8ed932) ### [Fortinet Firewall Deployment in Noida: A Practical Guide for Businesses](https://datanetfortinet.hashnode.dev/fortinet-firewall-deployment-in-noida-a-practical-guide-for-businesses?utm_source=hashnode&utm_medium=feed) Learn how Fortinet firewall deployment helps Noida businesses improve network security, protect business systems, and manage security risks. 4 min read · [datanetfortinet.hashnode.dev](https://datanetfortinet.hashnode.dev/fortinet-firewall-deployment-in-noida-a-practical-guide-for-businesses?utm_source=hashnode&utm_medium=feed) [404 Founders](https://hashnode.com/@404-founders) · [Oct 27](https://hashnode.com/posts/alert-hpe-aruba-aos-cvss-10-rce/6ae09239baab9c32d62d3913) ### [HPE Aruba AOS CVE-2026-79844: Eight CVSS 10.0 Flaws](https://404-founders.com/blog/alert-hpe-aruba-aos-cvss-10-rce?utm_source=hashnode&utm_medium=feed) HPE patches 72 AOS-8 and AOS-10 flaws including eight CVSS 10.0 pre-auth RCE and auth bypass flaws. Patch to AOS-10.8.1.2 or AOS-8.13.3.1 now. 6 min read · [404-founders.com](https://404-founders.com/blog/alert-hpe-aruba-aos-cvss-10-rce?utm_source=hashnode&utm_medium=feed) [Victor Chukwuemeka Onwuegbuchulem](https://hashnode.com/@VickkyProgramming) · [Oct 25](https://hashnode.com/posts/firewalls-and-defence-in-depth-why-one-wall-is-never-enough/6ade6d9a8a5fb597cd7d902f) ### [Firewalls and Defence in Depth: Why One Wall Is Never Enough](https://victor-chukwuemeka.hashnode.dev/firewalls-and-defence-in-depth-why-one-wall-is-never-enough?utm_source=hashnode&utm_medium=feed) Series: Networking Foundations | Post 12 of 14 We have spent eleven posts finding the same uncomfortable truth in every corner of the internet: almost everything was built to trust too much. Now we turn, for the first time, to the defences. The firewall is where most people's mental picture of security lives: a strong wall around the network, keeping the bad out and trusting everything within. That picture is worth understanding in detail, because it is also, precisely, the one that fails, and understanding why it fails is the whole point of this post. 15 min read · [victor-chukwuemeka.hashnode.dev](https://victor-chukwuemeka.hashnode.dev/firewalls-and-defence-in-depth-why-one-wall-is-never-enough?utm_source=hashnode&utm_medium=feed) [Onlive Server](https://hashnode.com/@onliveserver) · [Oct 21](https://hashnode.com/posts/configuring-vmware-esxi-enterprise-networking-vswitches-vlan-segmentation-and-dmz-demarcation/6ad84e8696b57f05418b0d6c) ### [Configuring VMware ESXi Enterprise Networking: vSwitches, VLAN Segmentation, and DMZ Demarcation](https://onliveinfotech.hashnode.dev/configuring-vmware-esxi-enterprise-networking-vswitches-vlan-segmentation-and-dmz-demarcation?utm_source=hashnode&utm_medium=feed) Configure VMware ESXi vSwitches, VLANs, and DMZ firewall rules to isolate workloads and secure enterprise networks. 10 min read · [onliveinfotech.hashnode.dev](https://onliveinfotech.hashnode.dev/configuring-vmware-esxi-enterprise-networking-vswitches-vlan-segmentation-and-dmz-demarcation?utm_source=hashnode&utm_medium=feed) [Kazem Mortazavi](https://hashnode.com/@kazem-mortazavi) · [Oct 20](https://hashnode.com/posts/firewall-policy-cleanup-removing-stale-rules-without-breaking-services/6ad6b2972d1959a41265698c) ### [Firewall Policy Cleanup: Removing Stale Rules Without Breaking Services](https://securityland.hashnode.dev/firewall-policy-cleanup-removing-stale-rules-without-breaking-services?utm_source=hashnode&utm_medium=feed) A firewall is only as strong as the policy running on it. In a recent review of a multi-branch organization, the main firewall had more than 2,000 rules. About a third had not matched a single packet 3 min read · [securityland.hashnode.dev](https://securityland.hashnode.dev/firewall-policy-cleanup-removing-stale-rules-without-breaking-services?utm_source=hashnode&utm_medium=feed)