Packet Pushers - Fat Pipe

What are the most essential topics to understand for a new networkers? Ethan Banks and Holly Metlitzky address a listener’s question about foundational topics, covering what a network is, the differences between packet-switched and circuit-switched networks, and the nature of the internet as a “network of networks.” They discuss the importance of Internet Protocol (IP),... Read more »

Traditional network monitoring was built around SNMP and logs. And while there’s still a role for these sources, network observability aims to incorporate more data to help you build a holistic picture of the network and its behavior and performance. These sources can include flows, streaming telemetry, APIs, NETCONF, the CLI, deep packet inspection, synthetic... Read more »

Surveillance is a fact of life with modern technology, be it corporate data harvesting or government snooping. If you’re thinking about personal privacy, today’s episode covers common tools for communication and Web browsing. We dig into the end-to-end encryption capabilities of the messaging tools Signal and WhatsApp, look at the capabilities and limits of the... Read more »

Take a Network Break! This week we get an update on SonicWall’s new firewall warranty. We also cover Cisco’s Wi-Fi 7 launch; in addition to new APs, Cisco also updates its branding and rolls out “simplified” licensing that bundles features you might not want. Aviatrix adds a PaaS option for its cloud networking software, but... Read more »

On today’s episode, artificial intelligence with sponsor Selector.AI. If you’re curious and maybe still skeptical about the value AI brings to network operations, listen to this episode. Selector is on the forefront of AIOps for networking, building models that are customized and specifically targeted at networks. What Selector is doing is NOT simply the low-hanging... Read more »

AI can support network operations, but it can also be complex, mysterious, and steeped in vendor hype. On today’s episode, guest Phil Gervasi clarifies some of the terminology and concepts of AI, including distinctions among concepts like generative AI, general AI, and large language models (LLMs). Phil shares tips for getting beyond the hype to... Read more »

Today we explore Virtual Local Area Networks (VLANs). This topic was prompted by a question from college student Douglas. We’ll explain the fundamental concepts of VLANs, such as their role in segmenting and managing network traffic, and the technical details for implementation. We’ll also address key topics including VLAN tags, access and trunk ports, and... Read more »

With the current cultural emphasis on AI and how that is changing our world, we often forget the human element of individuals and teams when building an effective software development team. On today’s Day Two DevOps, we explore the psychology behind software teams, psychological safety for those teams and how the advent of AI plays... Read more »

Microsoft’s Active Directory and Entra ID are valuable targets for attackers because they store critical identity information. On today’s Packet Protector, we talk with penetration tester and security consultant Eric Kuehn about how he approaches compromising AD/Entra ID, common problems he sees during client engagements, quick wins for administrators and security pros to fortify their... Read more »

Take a Network Break! This week we cover a serious Cisco vulnerability, SonicWall offering a firewall warranty, and a security advisory from ID provider Okta. Apple buys a stake in a satellite telecommunications company, Lumen and Google team up on a joint networking/AI deal, and we check on financial results from Arista Networks, Extreme Networks,... Read more »

On today’s episode, we chat with wireless ISP engineer Elijah Zeida. Elijah had an interesting connectivity challenge to solve for a remote mountain town that relies on a wireless connection for Internet access, and not much budget to solve it with. But he got it done by building his own SD-WAN using Mikrotik boxes and... Read more »

Everyone has their own hot take or bit of wisdom to share regarding technical leadership.  Today, host Laura Santamaria weaves these insights on communication, collaboration, decision making and more from her guests on the first six episodes of Technically Leadership. Listen, reflect and then apply to your own leadership role. Episode Links: Laura Santamaria Packet... Read more »

In this episode of N Is For Networking, co-hosts Ethan Banks and Holly Metlitzky take a question from college student Douglas that turns into a ride on the networking highway as they navigate the lanes of bandwidth and latency. Ethan and Holly define the concepts of bandwidth and latency and discuss current data transfer protocols... Read more »

Ostinato is a network traffic generator aimed at network engineers who need test traffic, whether in a lab or production, to do things such as test circuit bandwidth, determine if SD-WAN or load balancing rules are working as intended, investigate packet drops, and more. Originally released as an open-source project, Ostinato is now offered as... Read more »

We are firmly entrenched in a hybrid cloud world, from on-prem data centers to multiple cloud platforms to branch and remote offices, not to mention wandering end users connecting via VPN. While the network is the common substrate among all these locations, every cloud provider has its own network implementation. Managing, monitoring and securing all... Read more »

Security professionals often have an impulse to want to move on to the next new thing. While that can be helpful in a field that thrives on change, it can also make it hard to focus on routine tasks and mundane (yet essential) security controls and practices. Whether this impulse is due to varying degrees... Read more »

Take a Network Break! This week we discuss Google adding traffic shaping to its cross-cloud interconnect, Aviatrix bringing hybrid cloud transit to its cloud networking service, and Microsoft forcing MFA for Entra ID customers. Microsoft CEO Satya Nadella forgoes $5 million in incentive pay for Microsoft security lapses, Extreme Networks adds new features to its... Read more »

Alkira provides a Multi-Cloud Networking Service (MCNS) that lets you connect public cloud and on-prem locations using a cloud-delivered, as-a-service approach. But Alkira offers more than just multi-cloud connectivity. On today’s sponsored episode of Heavy Networking, we dig into Alkira’s full set of offerings, which include networking, visibility, governance, and security controls such as firewalls... Read more »

In this episode of Total Network Operations the conversation focuses on the impact and implementation of AI on network operations. Host Scott Robohn is joined by guest Michael Wynston to discuss the foundational requirements for AI implementation, such as well-documented processes, version control, and lab testing. Michael also talks about the need for lifelong learning... Read more »

Frames and packets: how are they different and why is it important to know those differences? On this first episode of N Is For Networking, join co-hosts Holly Metlitzky and Ethan Banks to learn the fundamentals about frames and packets, plus some bonus material on layers and addresses. N Is For Networking is the newest... Read more »