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Technology Short Take 176

Scott Lowe

Networking Lee Briggs (formerly of Pulumi, now with Tailscale) shows how to use the Tailscale Operator to create “free” Kubernetes load balancers (“free” as in no additional charge above and beyond what it would normally cost to operate a Kubernetes cluster). Ivan Pepelnjak dives deep on DHCP relaying on a Linux host.

Linux 112
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New Linux-based ransomware targets VMware servers

Network World

Cheerscript plants double-extortion malware on ESXi servers.

Vmware 186
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Microsegmentation – Secure Your Internal Network

CTOvision

Microsegmentation like that provided by vendors CISCO and VMware state that traditional perimeter defenses akin to medieval castles walls no longer work. Since 2000, secure networks have been built by segmenting traffic at the switch port level from server to server, radically limiting east-west traffic. Nathaniel Crocker.

Network 150
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Issue with VMware-Formatted Cumulus VX Vagrant Box

Scott Lowe

I recently had a need to revisit the use of Cumulus VX (the Cumulus Networks virtual appliance running Cumulus Linux) in a Vagrant environment, and I wanted to be sure to test what I was doing on multiple virtualization platforms. Unfortunately, there’s a simple error in the VMware-formatted box that prevents it from working.

Vmware 60
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Building a VMware-Formatted Cumulus VX Vagrant Box

Scott Lowe

In this post, I’m going to walk you through the process I used to build a Vagrant box for Cumulus VX that will work with VMware desktop hypervisors (like VMware Fusion or VMware Workstation ). If you’re not familiar with Cumulus VX, it’s a virtual appliance version of Cumulus Linux. This will create a “native” VMware VM.

Vmware 60
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Technology Short Take 171

Scott Lowe

Networking The networking section this time around is focused on application level protocols…but hey, they’re still networking protocols, right? A UEFI flaw , affecting both Windows and Linux, that leverages malicious images? Let the linking begin! Stealing cryptographic keys from SSH ? Double yikes.

Linux 103
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Open vSwitch Now a Linux Foundation Project

Scott Lowe

News emerged today that Open vSwitch (OVS) has formally moved over to the Linux Foundation. The project can finally shed itself of the (unfair) claims that the governance under Nicira (and later VMware) wasn’t “open enough.” For more information, refer to the official Linux Foundation press release.

Linux 60