The latest articles on DEV Community by Rao Shahzaib (@rao_shahzaib_8243663d67cb). https://dev.to/rao_shahzaib_8243663d67cb https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F2858270%2Fe378c96e-b4d1-43af-a792-d76f576a01b9.jpg https://dev.to/rao_shahzaib_8243663d67cb en Rao Shahzaib Mon, 02 Mar 2026 05:48:24 +0000 https://dev.to/rao_shahzaib_8243663d67cb/the-networking-layer-most-devops-engineers-never-learn-2879 https://dev.to/rao_shahzaib_8243663d67cb/the-networking-layer-most-devops-engineers-never-learn-2879 <p>I couldn't debug container networking properly because I never understood how packets actually move at the kernel level.</p> <p>So I wrote 11 hands-on articles that build the entire container network stack from scratch. No Docker. No Kubernetes. Just raw Linux commands.</p> <p>Namespaces, veth pairs, bridges, routing, iptables, NAT, conntrack — you build all of it yourself.</p> <p>Free and open source. <a href="https://github.com/ShahzaibRao/containers-Networking-From-Scratch/" rel="noopener noreferrer">Link </a>.</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F3om0dhjflonxs1rg6pwp.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F3om0dhjflonxs1rg6pwp.png" alt=" " width="725" height="481"></a></p> linux kernel docker kubernetes Rao Shahzaib Thu, 17 Apr 2025 07:15:26 +0000 https://dev.to/rao_shahzaib_8243663d67cb/get-your-personal-lifetime-email-no-login-needed-43p9 https://dev.to/rao_shahzaib_8243663d67cb/get-your-personal-lifetime-email-no-login-needed-43p9 <p>Looking for a reliable custom email without the hassle? This site lets you create <strong>unlimited temporary email addresses</strong> — and the best part? <strong>No login required!</strong> Just save your email credentials and you're all set. Perfect for:</p> <p>✅ Signing up for websites safely<br> ✅ Avoiding spam in your main inbox<br> ✅ Creating test emails on the fly</p> <p>Want even more? 👉 <strong>Create a free account now</strong> and unlock the ability to make <strong>up to 10 email addresses</strong>, with all your secrets saved — no need to write anything down!</p> <p>🚀 Start here: <a href="https://webmail.raoshahzaib.site/en/" rel="noopener noreferrer">https://webmail.raoshahzaib.site/en/</a></p> smtp tempmail anonymous serverless Rao Shahzaib Fri, 11 Apr 2025 05:13:22 +0000 https://dev.to/rao_shahzaib_8243663d67cb/best-site-to-create-temporary-custom-emails-valid-for-30-days-1n36 https://dev.to/rao_shahzaib_8243663d67cb/best-site-to-create-temporary-custom-emails-valid-for-30-days-1n36 <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F4na1ynfkqvj7rwpp6oyz.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F4na1ynfkqvj7rwpp6oyz.png" alt="Image description" width="800" height="433"></a><br> Need a quick email address that lasts longer than the usual 10-minute options? This site lets you create up to 5 custom email addresses under a single account, all valid for 30 days. Perfect for:<br> Signing up for websites without using your real email<br> Testing email flows or features<br> Keeping your inbox spam-free<br> No complicated setup — just pick your email names and you're good to go.<br> 🔗 Try it here: <a href="https://webmail.raoshahzaib.site/en/" rel="noopener noreferrer">https://webmail.raoshahzaib.site/en/</a></p> anonymous smtp cloudflarechallenge webdev