No more Azure magic Internet blackbox
Azure fixes the outbound Internet blackbox for VMs; building an efficient network with eBPF; always LAG your single-port handoffs and more vulnerability fun
A late edition this week again, that’s packed with some thoughtful pieces for your future career 👔 and some Architecture pieces and tweaks ⛓️, and even a real-life use of eBPF in a NetFlow-like way. Let’s dive in; ⬇️
NetEng
Default outbound access for VMs in Azure will be retired finally solving one of the oddities of Azure Cloud’s “magic outbound SNAT” that just allows isolated VMs Internet egress from a random MS Public IP you can’t control
Building an Efficient Network Flow Monitoring Tool with eBPF is a three part guide that deep deives into using eBPF to construct a NetFlowesque Collector
Why Single-Port LAGs? is one of those things that looks daft until you’ve worked as a NetEng long enough to see the sence (Native VLAN Trunks to your ESXi box with only “one VLAN ever, we promise” anyone?)
Backdoored firmware lets China state hackers control routers with “magic packets” and you thought WoL was bad enough
NotEng
Where does my computer get the time from? takes you down the NTP time rabbithole with our friends Sammy Stratum, Ginny GPS and Andy Atom
Great Architects Always Seek Feedback is a hard-learnt lesson as you progress in your Career; the more you know, the less you’re right
Cloud Costs Every Programmer Should Know proves that money is always king and should inform Design decisions more than it probably does
AI-assisted Decision-making is coming not for your job, but to help you better do your job
Ollama is like ChatGPT but running locally on your machine, and available instantly for integration into VSCode and other CLI-based switches
Industry
IPv6-only in EVPN-VXLAN Fabrics has useful information on the subject from Infoblox
Learn network programmability basics from Cisco DevNet is a fantastic resource to start your NetDevOps journey, and is completely free of charge
AWS kicks off cloud race to mandate MFA by default might be annoying for some, but will be valuable in stopping attackers at the Two Factor Frontdoor
That’s all for this week, but if you have any tip-offs or tidbits you’d like us to feature then please feel free to let us know at newsletter@reloadin.net and we’ll see if we can add them in 💬.