Podcasts about IPv4

Why a proposal for an alternative to IPv6 is unlikely to be viable, Microsoft really doesn’t want you to run Exchange Server on-prem, Google will finally stop being a proper search engine, setting up an email server for internal use, and mitigating DDoS attacks without Cloudflare. Plugs Support us on patreon and get an ad-free RSS feed with some early episodes Tuning ZFS for Databases Webinar: May 27th at 11am EDT: Database Performance on ZFS with Tom Lawrence News/discussion Veteran network architect proposes IPv8 – to improve IPv4, not leapfrog v6 Exchange Server zero-day vulnerability can be triggered by opening a malicious email Google Search as you know it is over Free consulting We were asked about setting up an email server for internal use, and mitigating DDoS attacks without Cloudflare. See our contact page for ways to get in touch.

Why a proposal for an alternative to IPv6 is unlikely to be viable, Microsoft really doesn’t want you to run Exchange Server on-prem, Google will finally stop being a proper search engine, setting up an email server for internal use, and mitigating DDoS attacks without Cloudflare. Plugs Support us on patreon and get an ad-free RSS feed with some early episodes Tuning ZFS for Databases Webinar: May 27th at 11am EDT: Database Performance on ZFS with Tom Lawrence News/discussion Veteran network architect proposes IPv8 – to improve IPv4, not leapfrog v6 Exchange Server zero-day vulnerability can be triggered by opening a malicious email Google Search as you know it is over Free consulting We were asked about setting up an email server for internal use, and mitigating DDoS attacks without Cloudflare. See our contact page for ways to get in touch.

Why is IPv6 so much more complicated than IPv4? Could a newer version such as IPv8 be the solution? Guest Brian Carpenter joins our hosts to explain that many of IPv6's complications are mathematical necessities. They point out that IPv6 has a 30 year head start on any IPv8 proposal that would struggle with many... Read more »

Why is IPv6 so much more complicated than IPv4? Could a newer version such as IPv8 be the solution? Guest Brian Carpenter joins our hosts to explain that many of IPv6's complications are mathematical necessities. They point out that IPv6 has a 30 year head start on any IPv8 proposal that would struggle with many... Read more »

In this episode, Adam Torres interviews Paulius Judickas, VP of Strategic Alliances at IPXO. Paulius explains the growing scarcity of IPv4 addresses and how IPXO's marketplace helps companies lease and monetize digital infrastructure assets. Follow Adam on Instagram at https://www.instagram.com/askadamtorres/ for up to date information on book releases and tour schedule. Apply to be a guest on our podcast: https://missionmatters.lpages.co/podcastguest/ Visit our website: https://missionmatters.com/ More FREE content from Mission Matters here: https://linktr.ee/missionmattersmedia Learn more about your ad choices. Visit podcastchoices.com/adchoices

In this episode, ⁠Adam Torres⁠ interviews ⁠Paulius Judickas⁠, VP of Strategic Alliances at IPXO. Paulius explains the growing scarcity of IPv4 addresses and how IPXO's marketplace helps companies lease and monetize digital infrastructure assets. Follow Adam on Instagram at ⁠https://www.instagram.com/askadamtorres/⁠ for up to date information on book releases and tour schedule. Apply to be a guest on our podcast: ⁠https://missionmatters.lpages.co/podcastguest/⁠ Visit our website: ⁠https://missionmatters.com/⁠ More FREE content from Mission Matters here: ⁠https://linktr.ee/missionmattersmedia⁠ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks, joins Holly and Ethan for another round of multicast. Part two helps fill in details not covered in episode 50. They cover how multicast traffic also affects Ethernet frame addressing, and the key differences between IPv4 and IPv6 multicast. They also explain new hybrid multicast... Read more »

Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks, joins Holly and Ethan for another round of multicast. Part two helps fill in details not covered in episode 50. They cover how multicast traffic also affects Ethernet frame addressing, and the key differences between IPv4 and IPv6 multicast. They also explain new hybrid multicast... Read more »

As the sun goes down on a glorious spring evening on the western edge of Europe, Elliot Williams is joined by Jenny List for a look at the week in all things Hackaday. First up: Hackaday Europe tickets are on sale! Bad luck folks, the early bird tickets disappeared in an instant, but regular ones are still available for now. We're really looking forward to making our way to Lecco for a weekend of hacks, and it would be great to see you there too. Then we have a new feature for the podcast, the Hackaday Mailbag. This week's contribution comes from [Kenny], a longtime friend of Hackaday and probably our most regular conference attendee. To the hacks, and we have some good ones. An air hockey robot might not seem like a challenge, but the engineering which went into [BasementBuilds'] one proves it's not a job for the faint hearted. Then we look at compression molding of recycled plastic using 3D-printed molds, something that seems surprisingly accessible and we'd like to try, too. We've got a new DOS, a 3D-printed zipper repair, the IPv4 replacement we didn't get, and the mind-bending logic of ternary computing. It's one of those weeks where the quick hacks could all deserve their own in-depth look, but perhaps the stand-outs are and Arduino style compiler that includes the source code compressed within the binary, and a beautifully-done revival of a 1980s brick cellphone as a modern 5G unit. Finally in the longer reads we've got an examination of wired versus Bluetooth headphones -- we're both in the wired camp -- and a look back at the age of free dialup. As is so often the case, the experience there differed between Brits and Americans. Anyway, enjoy the episode, and we have another week to look forward to.

One of the early design principles of the Internet was end-to-end connectivity: that is, every device on the Internet would be publicly addressable, and every device could share its resources or provide services. That design principle wasn’t achieved with IPv4 for a variety of reasons (including address scarcity, and many network owners not wanting endpoints... Read more »

One of the early design principles of the Internet was end-to-end connectivity: that is, every device on the Internet would be publicly addressable, and every device could share its resources or provide services. That design principle wasn’t achieved with IPv4 for a variety of reasons (including address scarcity, and many network owners not wanting endpoints... Read more »

IPv4 Mapped IPv6 Addresses https://isc.sans.edu/diary/IPv4%20Mapped%20IPv6%20Addresses/32804 More IP KVM Vulnerabilities https://eclypsium.com/blog/your-kvm-is-the-weak-link-how-30-dollar-devices-can-own-your-entire-network/ AWS Bedrock AgentCore Code Interpreter DNS Leak https://www.beyondtrust.com/blog/entry/pwning-aws-agentcore-code-interpreter

If you’re looking for a network automation project but you’re worried about breaking stuff, why not build your automation adventure around IPv6? If your production traffic runs on IPv4, you can experiment with automated configurations and changes using IPv6 without negatively impacting that v4 traffic. You can get a two-for one experience learning both IPv6... Read more »

If you’re looking for a network automation project but you’re worried about breaking stuff, why not build your automation adventure around IPv6? If your production traffic runs on IPv4, you can experiment with automated configurations and changes using IPv6 without negatively impacting that v4 traffic. You can get a two-for one experience learning both IPv6... Read more »

Het gebouw verzakt, het contract loopt af, en 160 servers moeten naar een nieuw thuis. Twee datacentra tegelijk verhuizen — met een team van vrijwilligers. Welkom bij ColoClue. Netwerkvereniging ColoClue is een coöperatieve colocatievereniging: een club van zo'n 250 leden die samen serverruimte huren in professionele datacentra en daar hun eigen hardware ophangen. Geen SLA's, geen commerciële dienst — maar wel een eigen netwerk (AS8283), verbindingen met meerdere internet exchanges en een indrukwekkende hoeveelheid veteranen uit de internetbranche. Bestuurslid Tjerk Jan Vonk en medeoprichter Niels Raijer vertellen over de dubbele datacenterverhuizing die deze zomer op het programma staat. Van EU Networks (het pand verzakt) en Cupra naar Iron Mountain in Haarlem en NorthC in Amsterdam. Daarnaast: een nieuw remote rack in Enschede, een partnerschap met AMS-IX via de Bright Networks Club, en Randals zoektocht om twee servers op één colocatieplek te hangen zonder dubbel te betalen. Over Tjerk Jan Vonk Tjerk Jan Vonk is freelance netwerkarchitect en sinds april 2024 bestuurslid bij ColoClue, waar hij de dubbele datacentermigratie leidt. Hij heeft eerder bij Equinix Enschede gewerkt en studeerde aan Saxion Hogeschool. LinkedIn: https://www.linkedin.com/in/tjerk-jan-vonk-6171b638/ Website: https://decramy.nl Over Niels Raijer Niels Raijer is CTO en oprichter van Fusix Networks en medeoprichter van ColoClue. Met 25+ jaar ervaring in IP-networking is hij ook vice-voorzitter van NLNOG en voorzitter van de Route Server Support Foundation. LinkedIn: https://www.linkedin.com/in/niels-raijer-733156/ Website: https://www.fusix.nl In deze aflevering 0:00:00 Een verzakkend datacenter en een aflopend contract — de aanleiding0:05:30 EU Networks sluit de deuren: wat nu met negen racks vol servers?0:09:00 250 leden, 160 servers: de schaal van ColoClue in perspectief0:11:30 Eén of twee datacentra? De ledenbevraging en de beslisboom0:20:00 Iron Mountain en NorthC: hoe kies je een nieuw datacenter?0:25:00 Verrassing: ColoClue opent een remote rack in Enschede0:29:00 ColoClue punches above its weight — professioneler dan het mag zijn0:37:00 Wenspakketje: PDU's, crossconnects en de grote Excel-sheet0:44:30 De verhuisplanning: mei en juli, met busjes vol oud ijzer0:47:00 Harde schijven, RAID-configuraties en de angst voor nevenschade0:55:00 Connectiviteit regelen: Fusics, AMS-IX en de Bright Networks Club1:03:00 IPv4-schaarste, IPv6-dromen en Odido-frustratie1:09:00 Oproep: ColoClue zoekt vrijwilligers voor de netwerkcommissie1:11:00 Randals twee-server-dilemma: ducttape of dubbel betalen? Genoemd in deze aflevering ColoClue — https://coloclue.net Fusix Networks — https://www.fusix.nl AMS-IX / Bright Networks Club NorthC Datacenters Iron Mountain (voorheen InfoSwitch, via Leaseweb) Nikhef Soleus (VPS-vereniging) Immich (open source foto-oplossing) Tips van de tafel Tjerk Jan: Lees je SMART-values uit om harde schijven in de gaten te houden voordat ze stuk gaan. Randal: Gebruik een rotatiebackupschema (dagelijks/wekelijks/maandelijks) én bewaar backups op een andere locatie. Annelies: Druk je favoriete foto's ook fysiek af — digitale backups zijn niet het hele verhaal. See omnystudio.com/listener for privacy information.

Kenneth Finnegan entertained us with stories about accidentally contributing to the internet's ability to network. Wondering how the internet works? All those terms about IPv4, IPv6, BGP, OSPF, CDN and other alphabet  soup? Check out the YouTube videos by NetworkChuck. Kenneth writes about his adventures on his blog, The Life of Kenneth. Some of the posts related to this show are: Creating an Internet Exchange for Even More Fun and Less Profit Building an Anycast Secondary DNS Service  Building the Micro Mirror Free Software CDN  We also mention FCIX aka fcix.net or the Fremont Cabal Internet Exchange You can also find Kenneth at @kwf@social.afront.org where you will find more about half-dollars, nickels, and trains. If you also secretly long to run a locomotive, take a look at the Run-A-Locomotive program at WPRM. The title is related to the XKCD comic 2347: Dependency. Transcript

An airhacks.fm conversation with Francesco Nigro (@forked_franz) about: break dancing and basketball including meeting Kobe Bryant in Italy during a dunk competition, using AI coding assistants like Claude Opus 4.5 and GitHub bots for infrastructure setup and CI/CD pipeline configuration, limitations of LLMs for novel performance-sensitive algorithmic work where training data is scarce, branchless IPv4 parsing optimization as a Christmas coding challenge, CPU branch misprediction costs when parsing variable-length IP address octets, converting branching logic into mathematical operations using bit tricks for better CPU pipeline utilization, LLMs excelling at generating enterprise code based on well-documented standards and conventions, providing minimal but precise documentation and annotations to improve LLM code generation quality, the Boundary Control Entity BCE architecture pattern and standards-based development, the core problem of thread handoff between event loops and ForkJoinPool worker threads in frameworks like quarkus Vert.x and Micronaut, mechanical sympathy implications of cross-core memory access when serialized data is allocated on one core and read by another, CPU cache coherency costs and last-level cache penalties when event loop and worker pool run on different cores, the custom virtual thread scheduler project (netty-virtual-thread-scheduler) enabling a single platform thread to handle both networking I/O and virtual thread execution, approximately 50% CPU savings demonstrated by Micronaut when using unified Netty-based scheduling, collaboration with Oracle Loom team including Victor Klang and Alan Bateman on minimal scheduler API design, the scheduler API consisting of just two methods onStart and onContinue plus virtual thread task attachments, work stealing algorithms and their complexity including heuristics similar to Linux CFS scheduler, the importance of being declarative about thread affinity rather than automatic magical binding to avoid issues with lazy class loading and background reaper threads, thread factory based approach for creating virtual threads bound to specific platform threads, stream-based run queues with graceful shutdown semantics that fall back to ForkJoinPool for progress guarantees, thread-local Scoped Values as a hybrid between thread locals and scoped values for efficient context propagation, performance problems with ThreadLocal including lazy ThreadLocalMap allocation overhead on virtual threads and scalability issues with ThreadLocal.remove() and soft reference queues, the impact on reactive programming where back pressure and stream composition still require higher-level abstractions beyond Basic Java concurrency primitives, structured concurrency limitations for back pressure scenarios compared to reactive libraries, deterministic testing possibilities enabled by custom schedulers where execution order can be controlled, the poller mechanism for handling blocking I/O in virtual threads in a non-blocking way, observability improvements possible through virtual thread task attachments for monitoring state changes, cloud cost implications of inefficient thread scheduling and unnecessary CPU wake-up cycles, the distinction between framework developers and application developers as different user personas with different abstraction needs Francesco Nigro on twitter: @forked_franz

Are you struggling to get IPv6 working, whether in a lab or even a pilot deployment? Ed, Nick, and Tom walk through the essentials of IPv6 troubleshooting, revealing the non-negotiable differences between IPv4 and IPv6 that can trip up even experienced network engineers. They break down why blocking all ICMP, like in v4, will instantly... Read more »

Are you struggling to get IPv6 working, whether in a lab or even a pilot deployment? Ed, Nick, and Tom walk through the essentials of IPv6 troubleshooting, revealing the non-negotiable differences between IPv4 and IPv6 that can trip up even experienced network engineers. They break down why blocking all ICMP, like in v4, will instantly... Read more »

In this episode of PING, APNIC Chief Scientist Geoff Huston returns with his annual review of BGP, reflecting on developments across 2025. Geoff has been publishing this year-in-review analysis of BGP dynamics for more than a decade, and this time he has uncovered some genuinely surprising shifts. His 2025 analysis has been published in two parts on the APNIC Blog. Border Gateway Protocol (BGP) is the mechanism by which network operators announce their Internet address space to the rest of the world and, in turn, learn about the addresses announced by others. Operators participating in the global default-free zone receive all publicly announced routes, each expressed as an IP prefix and associated with its originating Autonomous System Number (ASN). Every BGP speaker has a unique ASN, and all routing information is exchanged and interpreted through this fundamental identifier. In effect, the ASN is the basic unit of interdomain routing. BGP also carries path information that describes how routing announcements traverse the network. This data informs routing policy decisions — which paths to prefer, and through which commercial or technical relationships. While the protocol itself is well understood, the system as a whole is anything but simple. When more than 100,000 ASes are continuously exchanging routing information, complexity is unavoidable. Speaking BGP is about telling things and learning things, but it's also about deciding what to do with what has been learned. This is the work behind a router, and involves holding all the information and performing routing decisions on it, so the ‘size' of the information shared and learned has a direct impact on the ‘cost' of operating as a BGP speaker (cost here ultimately means memory and CPU). For most of the Internet's history, BGP growth has been relentless, forcing operators to continually ask whether their current routing infrastructure can accommodate future growth. All technology adoption has a life cycle, and is often referred to as the ‘technology adoption curve'. New technologies start out expensive and scarce, become cheaper and widely adopted, and eventually reach a point of saturation where growth slows and replacement becomes the dominant driver. For much of its existence, the Internet has remained firmly in the rapid growth phase of this curve, with sustained increases in users, networks, and routing information. Geoff has detected changes in the pace of growth for both IPv4 and IPv6, which suggest the underlying economics behind investment in Internet, and growth in customers has reached it's saturation point: We are entering a time where BGP growth may not have the same dynamics we've been used to, and questions about capital investment in BGP routing and underlying Internet Addressing are not the same.

“Availability is resilience. If you can't see it, you can't secure it.” — Roland Dobbins, Principal Engineer, NETSCOUT ASERT Team In this Technology Reseller News podcast, Doug Green, Publisher of TR Publications, speaks with Roland Dobbins, Principal Engineer on NETSCOUT's ASERT (Arbor Security Engineering & Response Team), about the growing risk of outbound DDoS attacks—and why service providers and enterprises must defend against threats moving in every direction. NETSCOUT, a global leader in network visibility and DDoS defense, has been monitoring an alarming surge in outbound and cross-network (east-west) attack traffic driven by new “Turbo Mirai” botnets, particularly the Aisuru variant. These attacks can exceed 20 terabits per second and 6 gigapackets per second, overwhelming even the largest operators. Dobbins explains that while most organizations focus on protecting against incoming DDoS traffic, outbound attack streams can be just as damaging, clogging peering links and taking down critical infrastructure. “We're seeing broadband networks unintentionally launching massive attacks, sometimes over a terabit per second, because of compromised IoT and connected devices,” Dobbins said. “It's not just about defending the target — it's about protecting your own network from being part of the problem.” NETSCOUT's ASERT team, which observes 40,000–50,000 DDoS attacks daily across 60% of the world's IPv4 space, provides continuous research and live mitigation guidance to customers worldwide. Dobbins emphasized that effective DDoS defense requires edge-to-edge visibility, sub-second detection, and suppression of both inbound and outbound traffic. “You can't secure what you can't see,” he added. “Operators need full visibility across their networks, with active mitigation built into daily operations.” Learn more about NETSCOUT's global threat research and DDoS defense solutions at netscout.com. Software Mind Telco Days 2025: On-demand online conference Engaging Customers, Harnessing Data

professorjrod@gmail.comEver wonder how your phone grabs an IP address the instant you join Wi‑Fi? We break down the invisible handshake that makes it happen: DORA. From discovery to acknowledgement, we map each step of the DHCP exchange, explain lease timers, and show how networks hand out addresses at scale without stepping on their own toes. Along the way, we share practical stories from classrooms, offices, and coffee shops that turn abstract packets into clear mental models.We go deeper than definitions. You'll learn how scopes shape address pools, why reservations keep printers stable, and how APIPA exposes broken paths with 169.254.x.x clues. In segmented environments, relays and the GIADDR field become the traffic cops that steer requests to the right subnet; misconfigure them and clients get stranded. Security gets real too: rogue DHCP can poison DNS, starvation floods can exhaust pools, and well‑meaning mesh gear can become a second server. We detail protective moves like DHCP snooping, port security, and rate limiting, plus how snooping's binding tables feed stronger Layer 2 defenses.Resilience matters, so we unpack failover strategies—hot standby, load balancing, and legacy split scopes—and the rich set of DHCP options that deliver DNS, NTP, TFTP, and VoIP boot settings. We also tackle IPv6 with a sober lens: where SLAAC fits, when DHCPv6 is still essential, and why economics slow change even as IPv4 addresses remain scarce. If you support users, we hand you a troubleshooting playbook: spot APIPA, check relays, expand scopes, and use ipconfig release/renew to solve issues methodically and ace help desk interviews.If this helped you see the network with new eyes, tap follow, share with a teammate, and leave a quick review. Got a DHCP puzzle or a rogue gear story? Send it our way and we might feature it next time.Inspiring Tech Leaders - The Technology PodcastInterviews with Tech Leaders and insights on the latest emerging technology trends.Listen on: Apple Podcasts SpotifySupport the showArt By Sarah/DesmondMusic by Joakim KarudLittle chacha ProductionsJuan Rodriguez can be reached atTikTok @ProfessorJrodProfessorJRod@gmail.com@Prof_JRodInstagram ProfessorJRod

professorjrod@gmail.comEver wish the network would just explain itself? We walk through the real language of connectivity—how links come alive, how packets choose their paths, and how a few core ideas unlock routers, firewalls, addressing, and the exam questions that test them. It starts with the wire (and the air): DSL over copper, cable scaling with DOCSIS, fiber to an ONT at your home, and why fixed wireless, satellite, and 5G fill coverage gaps with very different tradeoffs in speed and latency. From there, we draw the line between moving traffic and governing it. Routers forward based on IP and subnets; firewalls enforce policy using IPs, protocols, and ports—think velvet rope, but for packets.We bring the TCP/IP stack down to earth with a clean mental model of layers and encapsulation, then dig into IPv4 addressing, subnet masks, and private ranges that rely on NAT to share a single public IP. You'll learn why static IPs belong on printers and servers, how DHCP's DORA flow keeps clients online, and what APIPA is telling you when a lease fails. We also size up IPv6—128-bit addresses, hexadecimal notation, dual stack—and unpack the practical roadblocks that slow adoption despite the promise of massive address space.Transport choices make or break performance, so we compare TCP's three‑way handshake and delivery guarantees with UDP's low-latency approach favored by streaming and gaming. We highlight the ports every tech should know—22, 53, 80, 443, 67/68, 21/20, 3389—because port literacy speeds troubleshooting. On identity and isolation, we translate DNS records (A, AAAA, CNAME, MX, TXT) into everyday use and show how VLANs reduce broadcast noise while VPNs protect data over untrusted networks. To cement it all, we run live quiz walkthroughs and model how to spot keywords, eliminate distractors, and reason under time pressure—skills you can carry straight into the CompTIA A+ and beyond.If this helped you think more clearly about networks, follow the show, leave a rating, and share it with a friend who's studying. Got a topic you want us to deep-dive next—DHCP, DNS, or VLANs? Drop a note and subscribe so you don't miss the next breakdown.Inspiring Tech Leaders - The Technology PodcastInterviews with Tech Leaders and insights on the latest emerging technology trends.Listen on: Apple Podcasts SpotifySupport the showArt By Sarah/DesmondMusic by Joakim KarudLittle chacha ProductionsJuan Rodriguez can be reached atTikTok @ProfessorJrodProfessorJRod@gmail.com@Prof_JRodInstagram ProfessorJRod

Sometimes weirdness occurs within DNS if you’re on an IPv4 network and you connect to a dual-stack or v6-only VPN. Maybe the browser doesn’t connect, but you can still send pings, or vice versa. Is the OS getting confused about which stack and which order of interfaces to request services? Is the weird behavior being... Read more »

Sometimes weirdness occurs within DNS if you’re on an IPv4 network and you connect to a dual-stack or v6-only VPN. Maybe the browser doesn’t connect, but you can still send pings, or vice versa. Is the OS getting confused about which stack and which order of interfaces to request services? Is the weird behavior being... Read more »

We’re diving into another IPv6 Basics today with the topic of dual-stack, which means running the IPv4 and IPv6 protocol stacks simultaneously. We get many questions about the implications of running dual-stack, and in this episode we’ll provide answers. We start by getting a little finicky about the definition of dual-stack, and then talk about... Read more »

We’re diving into another IPv6 Basics today with the topic of dual-stack, which means running the IPv4 and IPv6 protocol stacks simultaneously. We get many questions about the implications of running dual-stack, and in this episode we’ll provide answers. We start by getting a little finicky about the definition of dual-stack, and then talk about... Read more »

Mark “Murch” Erhardt and Mike Schmidt are joined by Bruno Garcia and Liam Eagen to discuss Newsletter #369.News● Update on differential fuzzing of Bitcoin and LN implementations (24:56) ● Garbled locks for accountable computing contracts (0:58) Selected Q&A from Bitcoin Stack Exchange● Is it possible to recover a private key from an aggregate public key under strong assumptions? (39:45) ● Are all taproot addresses vulnerable to quantum computing? (41:24) ● Why cant we set the chainstate obfuscation key? (45:20) ● Is it possible to revoke a spending branch after a block height? (52:09) ● Configure Bitcoin Core to use onion nodes in addition to IPv4 and IPv6 nodes? (53:45) Releases and release candidates● Bitcoin Core 29.1rc2 (54:22) ● Core Lightning v25.09rc4 (56:45) Notable code and documentation changes● Bitcoin Core #31802 (57:37) ● LDK #3979 (1:04:46) ● LND #10102 (1:06:19) ● Rust Bitcoin #4907 (1:07:04)

Transitioning from IPv4 to IPv6, or at least IPv6-mostly, is no easy task. Today’s show provides some education and advice about IPv6 transition mechanisms. We cover options such as NAT64, DNS64, PREF64, and more, as well as use cases. Also, if your technology vendors aren’t offering some of these mechanisms, ask for them – you’re... Read more »

Transitioning from IPv4 to IPv6, or at least IPv6-mostly, is no easy task. Today’s show provides some education and advice about IPv6 transition mechanisms. We cover options such as NAT64, DNS64, PREF64, and more, as well as use cases. Also, if your technology vendors aren’t offering some of these mechanisms, ask for them – you’re... Read more »

This show has been flagged as Clean by the host. IPv6 for Luddites Andrew (aka mcnalu) recently triggered Beni by saying that he turns off IPv6 in order to get devices working on his home network. In this show Beni educates Andrew the Luddite and explains why moving from IPv4 to IPv6 is a good idea. They also explore how IPv6 can be used in a world where ISPs and devices do not all support it and what tools, tips and tricks are available during this rather long transitional phase to the newish (like 30 years old, a blink of an eye in IT) protocol. Relevant RFCs RFC 4861: Neighbor Discovery (basically the ICMP based replacement of ARP) RFC 4862: Stateless Address Configuration RFC 4941: Privacy Extension for SLAAC RFC 6146: NAT64 RFC 6147: DNS64 RFC 6877: XLAT464 (Allow your legacy software to talk to its legacy server in an IPv6 only environment) Provide feedback on this episode.

Send us a textCheck us out at:  https://www.cisspcybertraining.com/Get access to 360 FREE CISSP Questions:  https://www.cisspcybertraining.com/offers/dzHKVcDB/checkoutGet access to my FREE CISSP Self-Study Essentials Videos:  https://www.cisspcybertraining.com/offers/KzBKKouvNetwork security is the cornerstone of modern cybersecurity, and understanding its intricacies is essential for anyone preparing for the CISSP exam. In this comprehensive episode, Sean Gerber delivers a rapid review of Domain 4: Communications and Network Security, which constitutes 13% of the CISSP exam questions.The episode opens with a cautionary tale about a disgruntled Chinese developer who received a four-year prison sentence for deploying a logic bomb that devastated his former employer's network. This real-world example underscores the critical importance of proper employee termination procedures and privilege management—especially for technical staff with elevated access. As Sean emphasizes, "The eyes of Sauron" should be on any high-privilege employee showing signs of discontent.Diving into Domain 4, Sean expertly navigates through foundational concepts like the OSI and TCP/IP models, explaining how they standardize network communications and why security professionals must understand them to implement effective defense strategies. The discussion progresses through IP networking (both IPv4 and IPv6), secure protocols, multi-layer protections, and deep packet inspection—all crucial components of a robust security architecture.Particularly valuable is Sean's breakdown of modern network technologies like micro-segmentation, which divides networks into highly granular security zones. While acknowledging its power to limit lateral movement during breaches, he cautions that implementation requires sophisticated knowledge of software-defined networking (SDN) and careful planning: "It's better to start small than to go out and think of and get too big when you're dealing with deploying these SDN type of capabilities."Wireless security, content delivery networks, and endpoint protection receive thorough examination, with Sean emphasizing that endpoints are "your first line of detection" and advocating for comprehensive endpoint detection and response (EDR) solutions that go beyond traditional antivirus. The episode concludes with insights on voice communication security, contrasting traditional telephone networks with modern VoIP systems and their unique vulnerabilities.Whether you're preparing for the CISSP exam or looking to strengthen your organization's network security posture, this episode provides actionable insights backed by real-world experience. Ready to deepen your understanding of cybersecurity fundamentals? Subscribe to the CISSP Cyber Training Podcast and check out the free resources available at cisspybertraining.com to accelerate your certification journey.Support the showGain exclusive access to 360 FREE CISSP Practice Questions delivered directly to your inbox! Sign up at FreeCISSPQuestions.com and receive 30 expertly crafted practice questions every 15 days for the next 6 months—completely free! Don't miss this valuable opportunity to strengthen your CISSP exam preparation and boost your chances of certification success. Join now and start your journey toward CISSP mastery today!

The Threadripper leads the conversation this week, with it's impressive Linux performance and many, many cores and PCIe lanes. Then Bcachefs dangles over the precipice, NetworkManager 1.54 has some impressive features, and the Kernel calendar turns the page from 6.16 to the 6.17 merge window. Firewire is still around, KDE gets a day/night mode, and Wayland may never be ready. For tips we have OpenSnitch and a novel use for qemu-img. You can see the show notes at https://bit.ly/40OxbMf and until next week! Host: Jonathan Bennett Co-Host: Jeff Massie Download or subscribe to Untitled Linux Show at https://twit.tv/shows/untitled-linux-show Want access to the ad-free video and exclusive features? Become a member of Club TWiT today! https://twit.tv/clubtwit Club TWiT members can discuss this episode and leave feedback in the Club TWiT Discord.

Let’s talk about common misconceptions regarding DNS and IPv6. We’ve heard these often enough that we felt we should talk through each one. We cover issues including what kind of DNS record types can be returned via IPv6 (and IPv4, too), more details on what really goes on with Happy Eyeballs, and combining A/AAAA records... Read more »

Let’s talk about common misconceptions regarding DNS and IPv6. We’ve heard these often enough that we felt we should talk through each one. We cover issues including what kind of DNS record types can be returned via IPv6 (and IPv4, too), more details on what really goes on with Happy Eyeballs, and combining A/AAAA records... Read more »

Let’s chat about point-to-point links. On today’s episode we cover what should and shouldn’t be done, and discuss why following RFC's doesn't always get you to the right place. We dig into questions including: Don't we just use link-local addresses for point-to-points? Shouldn't we assign a /127, just like we do a /31 in IPv4?... Read more »

Let’s chat about point-to-point links. On today’s episode we cover what should and shouldn’t be done, and discuss why following RFC's doesn't always get you to the right place. We dig into questions including: Don't we just use link-local addresses for point-to-points? Shouldn't we assign a /127, just like we do a /31 in IPv4?... Read more »

Today we talk with Tommy Jensen, a Senior Technical PM Strategist at Microsoft, about IPv6 support in Windows. Tommy shares what he hears from enterprises that are moving toward IPv6-mostly, strategies for dealing with older applications and devices that expect IPv4, and how the customer conversations he's having about IPv6 now are more engaged and... Read more »

Today we talk with Tommy Jensen, a Senior Technical PM Strategist at Microsoft, about IPv6 support in Windows. Tommy shares what he hears from enterprises that are moving toward IPv6-mostly, strategies for dealing with older applications and devices that expect IPv4, and how the customer conversations he's having about IPv6 now are more engaged and... Read more »

IPv4 addresses are worth an awful lot of money, the serious dangers of a seemingly sensible deepfake law, Microsoft is 50 years old, and our thoughts on antivirus on Linux and Windows.   Plugs Support us on patreon and get an ad-free RSS feed with early episodes sometimes Accurate and Effective Storage Benchmarking   News […]

IPv4 addresses are worth an awful lot of money, the serious dangers of a seemingly sensible deepfake law, Microsoft is 50 years old, and our thoughts on antivirus on Linux and Windows.   Plugs Support us on patreon and get an ad-free RSS feed with early episodes sometimes Accurate and Effective Storage Benchmarking   News... Read More

AWS Morning Brief for the week of April 7th, with Corey Quinn. Links:Amazon EC2 now supports more bandwidth and jumbo frames to select destinationsAPI Gateway launches support for dual-stack (IPv4 and IPv6) endpointsAWS Lambda adds support for Ruby 3.4Amazon CloudWatch Logs increases maximum log event size to 1 MBAmazon Neptune announces 99.99% availability Service Level AgreementAnnouncing the general availability of Amazon VPC Route ServerUnder the hood: Amazon EKS Auto ModeOptimizing cost savings: The advantage of Amazon Aurora over self-managed open source databasesHow AWS Sales uses generative AI to streamline account planningIssue with AWS SAM CLI (CVE-2025-3047, CVE-2025-3048)

Our ongoing IPv6 Basics series continues with an episode on v6 routing essentials. We start with a comparison of various routing protocols: RIP, OSPF, IS-IS, EGP, and BGP. We look at pros and cons of each, and discuss challenges such as dual stack IPv4 and IPv6 network implementation, memory and resource use with IPv6, and... Read more »

Our ongoing IPv6 Basics series continues with an episode on v6 routing essentials. We start with a comparison of various routing protocols: RIP, OSPF, IS-IS, EGP, and BGP. We look at pros and cons of each, and discuss challenges such as dual stack IPv4 and IPv6 network implementation, memory and resource use with IPv6, and... Read more »

Trends in the global BGP table--the Default Free Zone (DFZ) table--can tell us a lot about the state of the global Internet. Is the Internet growing? Is IPv6 growing, or are we still in a world of "all things IPv4?" Geoff Huston joins Tom Ammon and Russ White to review the state of the routing table from 2024.

It's YOUR time to #EdUp In this episode, brought to YOU by the ⁠⁠InsightsEDU⁠⁠ 2025 conference & Ellucian LIVE 2025 YOUR guests are John Brzozowski, CEO, & Mark Ewen, VP of Sales, IPClear, & Mark Albert, CIO, DeSales University YOUR host is ⁠⁠Dr. Joe Sallustio This episode highlights how institutions can monetize their unused IPv4 addresses through network modernization & transformation. The conversation explores how IPClear helps universities identify, optimize & monetize their IPv4 assets while preparing for IPv6 adoption. The discussion reveals how DeSales University worked with IPClear to consolidate their IP addresses from over 10,000 to less than 55, resulting in millions in revenue, improved network security & performance. The experts share insights on the current IPv4 market & the future transition to IPv6. Key topics include network asset optimization, revenue generation opportunities for institutions, technical transformation processes & the importance of education around digital assets in higher education. Listen in to #EdUp Do YOU want to accelerate YOUR professional development? Do YOU want to get exclusive early access to ad-free episodes, extended episodes, bonus episodes, original content, invites to special events, & more? Then ⁠⁠⁠⁠⁠⁠BECOME AN #EdUp PREMIUM SUBSCRIBER TODAY⁠⁠ - $19.99/month or $199.99/year (Save 17%)! Want YOUR org to cover costs? Email: EdUp@edupexperience.com Thank YOU so much for tuning in. Join us on the next episode for YOUR time to EdUp! Connect with YOUR EdUp Team - ⁠⁠⁠⁠⁠⁠⁠⁠⁠Elvin Freytes⁠⁠⁠⁠⁠⁠⁠⁠⁠ & ⁠⁠⁠⁠⁠⁠⁠⁠⁠Dr. Joe Sallustio⁠⁠⁠⁠ ● Join YOUR EdUp community at ⁠⁠⁠⁠⁠⁠⁠⁠⁠The EdUp Experience⁠⁠⁠⁠⁠⁠⁠⁠⁠! We make education YOUR business!

It’s history day on N Is For Networking! We learn about the development of IPv6 directly from Bob Hinden, one of the pioneers who made it happen. Bob discusses his journey from early work on ARPANET to his significant contributions to IPv6. We also cover the transition from IPv4, the challenges faced during IPv6’s creation,... Read more »

It’s history day on N Is For Networking! We learn about the development of IPv6 directly from Bob Hinden, one of the pioneers who made it happen. Bob discusses his journey from early work on ARPANET to his significant contributions to IPv6. We also cover the transition from IPv4, the challenges faced during IPv6’s creation,... Read more »

Apple proposes 45-day maximum certificate life. SEC fines four companies for downplaying their SolarWinds attack severity. Google adds 5 new features to Messenger including inappropriate content. Does AI-driven local device-side filtering resolve the encryption dilemma forever? The very nice looking "Session" messenger leaves Australia for Switzerland. Another quick look at the question of the EU's software liability moves. Fake North Korean employees WERE found to install backdoor malware. How to speed up an SSD without using SpinRite. Using ChatGPT to review and suggest improvements in code. And Internet governance has been trying to move the Internet to IPv6 for the past 25 years, but the Internet just doesn't want to go. Why not? And will it ever? Show Notes - https://www.grc.com/sn/SN-998-Notes.pdf Hosts: Steve Gibson and Leo Laporte Download or subscribe to this show at https://twit.tv/shows/security-now. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit You can submit a question to Security Now at the GRC Feedback Page. For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6. Sponsors: canary.tools/twit - use code: TWIT e-e.com/twit threatlocker.com for Security Now 1password.com/securitynow

Apple proposes 45-day maximum certificate life. SEC fines four companies for downplaying their SolarWinds attack severity. Google adds 5 new features to Messenger including inappropriate content. Does AI-driven local device-side filtering resolve the encryption dilemma forever? The very nice looking "Session" messenger leaves Australia for Switzerland. Another quick look at the question of the EU's software liability moves. Fake North Korean employees WERE found to install backdoor malware. How to speed up an SSD without using SpinRite. Using ChatGPT to review and suggest improvements in code. And Internet governance has been trying to move the Internet to IPv6 for the past 25 years, but the Internet just doesn't want to go. Why not? And will it ever? Show Notes - https://www.grc.com/sn/SN-998-Notes.pdf Hosts: Steve Gibson and Leo Laporte Download or subscribe to this show at https://twit.tv/shows/security-now. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit You can submit a question to Security Now at the GRC Feedback Page. For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6. Sponsors: canary.tools/twit - use code: TWIT e-e.com/twit threatlocker.com for Security Now 1password.com/securitynow