Episode Archive

Episode Archive

235 episodes of TechSNAP since the first episode, which aired on December 4th, 2014.

  • 409: Privacy Perspectives

    August 9th, 2019  |  39 mins 14 secs
    ad-blocking, adblock plus, advertising, amiunique, apple, bleee, bluetooth, bluetooth le, browser fingerprinting, canvas, chrome, devops, encryption, encryption debate, facebook, firefox, ghostery, google, incognito, ios, iphone, jupiter broadcasting, mozilla, openvpn, panopticlick, privacy, privacy badger, private browsing, security, sysadmin podcast, techsnap, ublock, ublock origin, vpn, webgl, whatsapp, wireguard

    We examine why it's so difficult to protect your privacy online and discuss browser fingerprinting, when to use a VPN, and the limits of private browsing.

  • 408: Apollo's ARC

    July 26th, 2019  |  35 mins 13 secs
    agc, ai, apollo, apollo anniversary, apollo guidance computer, arc, caching, chris siebenmann, cloud, core rope, dancing demon, devops, floating point, fpu, intel, kernel module, kvm, loihi, machine learning, magnetic core, margaret hamilton, memory, nasa, neural networks, neuromorphic computing, openzfs, page cache, pohoiki, punch cards, qcow, qcow2, qemu, retro computing, simd, snapshots, sysadmin, techsnap, text adventure, trs-80, vhd, virtualization, zfs, zfs on linux, zol

    We take a look at the amazing abilities of the Apollo Guidance Computer and Jim breaks down everything you need to know about the ZFS ARC.

  • 407: Old School Outages

    July 10th, 2019  |  42 mins 31 secs
    amd, benchmarks, bgp, bgp leak, cloudflare, cpu, deployment, devops, ecc, epyc, facebook, google, grafana, infosec, intel, internet, internet infrastructure, librenms, logging, logs, metrics, microsoft, monitoring, nagios, netdata, nrpe, observability, old school, opennms, outages, performance, prometheus, regex, riemann, rkpi, ryzen, server, server builds, sysadmin, techsnap, time series, verizon, xeon, zabbix

    Jim shares his Nagios tips and Wes chimes in with some modern monitoring tools as we chat monitoring in the wake of some high-profile outages.

  • 406: SACK Attack

    June 23rd, 2019  |  43 mins 33 secs
    backdoor, crypto, cryptocurrency, device removal, devops, dram, ecc, encryption, firefox, freebsd, linux, memory, mozilla, mss, networking, openzfs, ping of death, ram, rambleed, raw send, rowhammer, sack panic, sandbox, sandbox escape, security, ssd, targeted attack, tcp, techsnap, trim, zero day, zfs

    A new vulnerability may be the next 'Ping of Death'; we explore the details of SACK Panic and break down what you need to know.

  • 405: Update Uncertainty

    June 11th, 2019  |  30 mins 47 secs
    automatic updates, backups, bluekeep, brute force, devops, firewalls, goldbrute, hard drive, industrial control systems, internet worm, microsoft, nas, network security, nsa, out of support, password security, patching, patching policies, rdp, remote desktop, remote desktop protocol, rosewill, security, ssd, storage, supermicro, techsnap, terminal services, updates, vulnerabilities, wannacry, windows, windows update, windows xp, worm

    We explore the risky world of exposed RDP, from the brute force GoldBrute botnet to the dangerously worm-able BlueKeep vulnerability.

  • 404: Prefork Pitfalls

    May 25th, 2019  |  33 mins 49 secs
    apache, apache bench, apache mpms, benchmarking, cdn, concurrency, devops, event loop, http, lighttpd, mod_php, multi-processing modules, networking, nginx, performance, php, prefork, scalability, static sites, sysadmin, techsnap, threadpool, threads, varnish, w3 total cache, web hosting, web servers, wordpress

    We turn our eye to web server best practices, from the basics of CDNs to the importance of choosing the right multi-processing module.

  • 403: Keeping Systems Simple

    May 10th, 2019  |  46 mins 32 secs
    availability, cryptography, devops, dhcp, disaster recovery, ethernet, firewall, high availability, ipsec, kubernetes, layer 3, lfnw, linux, mesh network, openvpn, quantum computers, reliability, router, rpo, rto, security, simplicity, ssh, subspace, switch, sysadmin podcast, tcp, techsnap, tinc, tunnel, udp, vlan, vpn, wintun, wireguard, zinc

    We’re back from LinuxFest Northwest with an update on all things WireGuard, some VLAN myth busting, and the trade-offs of highly available systems.

  • 402: Snapshot Sanity

    April 25th, 2019  |  31 mins 33 secs
    atomic, atomic snapshot, copy on write, crash consistent, cron, data integrity, devops, filesystems, functional filesystem, linked list, openzfs, policy based, replication, rsync, sanoid, snapshot management, snapshots, syncoid, sysadmin podcast, techsnap, toml, warstories, zfs, zfs on linux, zol

    We continue our take on ZFS as Jim and Wes dive in to snapshots, replication, and the magic on copy on write.

  • 401: Everyday ZFS

    April 11th, 2019  |  47 mins 35 secs
    ashift, backups, cddl, checksum, copy on write, copyleft, data integrity, devops, ecc, filesystems, freebsd, gpl, hard disks, hard drives, iops, linux, openzf s, raid, raidz, snapshots, solaris, ssd, sun microsystems, sysadmin podcast, techsnap, throughput, ubuntu, vdez, zfs, zfs on linux, zfs on root, zol

    Jim and Wes sit down to bust some ZFS myths and share their tips and tricks for getting the most out of the ultimate filesystem.

  • 400: Supply Chain Attacks

    March 28th, 2019  |  32 mins 33 secs
    asus, asus live update firmware, asus malware, backdoor, badusb, bios, c runtime, cccleaner, command and control server, compiler, devops, fwupd, gigabyte, hardware manufacturers, intel management engine, ken thompson, linux, linux vendor firmware service, mac address, machine learning, malware, microcontroller, node, npm, package managers, pypi, python, reflections on trusting trust, shadowhammer, shadowpad, ssd firmware, supply chain, supply chain attacks, sysadmin podcast, techsnap, uefi, unsupervised learning, windows

    We break down the ASUS Live Update backdoor and explore why these kinds of supply chain attacks are on the rise.

  • 399: Ethics in AI

    March 15th, 2019  |  38 mins 48 secs
    ai, algorithms, bias, chatbot, civicplus, classification, computer vision, conceptnet, data, devops, expert systems, glove, machine learning, natural language processing, neural networks, passwords, plaintext offenders, privacy, programming, python, racism, reinforcement learning, robyn speer, scikit-learn, server builds, supervised learning, sysadmin podcast, tay, techsnap, unsupervised learning, word2vec, zo

    Machine learning promises to change many industries, but with these changes come dangerous new risks. Join Jim and Wes as they explore some of the surprising ways bias can creep in and the serious consequences of ignoring these problems.

  • 398: Proper Password Procedures

    February 28th, 2019  |  31 mins 23 secs
    1password, bcrypt, brute force, burp intruder, compliance, cracking, cryptographic hash, cryptography, devops, encryption, entropy, ethics, hashing algorithms, keepass, lastpass, offline encryption, owasp, password manager, password salt, passwords, pbkdf2, pci-dss, pivot, plaintext, power company, rainbow tables, scrypt, security, security research, sedc, software development, standards, sysadmin podcast, techsnap, utility

    We reveal the shady password practices that are all too common at many utility providers, and hash out why salts are essential to proper password storage.

  • 397: Quality Tools

    February 14th, 2019  |  40 mins 39 secs
    bandwidth, bitorrent, bufferbloat, collectd, command line, firehol, fireqos, firewall, gre, home networking, iptables, latency, monitoring, mpls, munin, nagios, netdata, network discipline, networking, networking engineering, openvpn, prometheus, qdisc, qos, queing discipline, queues, rate limit, routing, sane defaults, tc, tcp, traffic control, traffic shaping, udp, vpn, wireguard, wondershaper

    Join Jim and Wes as they battle bufferbloat, latency spikes, and network hogs with some of their favorite tools for traffic shaping, firewalling, and QoS.

  • 396: Floating Point Problems

    January 31st, 2019  |  27 mins 11 secs
    avx, cddl, checksum, clone, data integrity, devops, floating point, fpu, freebsd, gpl, hardware acceleration, header, journaling, kernel module, kernel preemption, lfnw, linux, multitasking, openzfs, oracle, raid, simd, snapshot, software license, storage, sysadmin podcast, techsnap, vectorized instructions, zfs, zfs on linux, zol, zvol

    Jim and Wes are joined by OpenZFS developer Richard Yao to explain why the recent drama over Linux kernel 5.0 is no big deal, and how his fix for the underlying issue might actually make things faster.

  • 395: The ACME Era

    January 20th, 2019  |  33 mins 21 secs
    acme, acme v2, apache, automation, bgp, caddy, certbot, csr, devops, dns, domain verification, dovecot, dv, eff, encryption, ev, exim, extended verification, http, https, ietf, isrg, let’s encrypt, mail server, mozilla, networking, nginx, postfix, public key cryptography. x.509, security, ssl, ssl certificates, startssl, sysadmin podcast, techsnap, tls, tls certificates, tls-sni-01, traefik

    We welcome Jim to the show, and he and Wes dive deep into all things Let’s Encrypt.

  • 394: All About Azure

    January 10th, 2019  |  26 mins 9 secs
    active directory, aws, azure, azure sphere, azure stack, cloud, command line, devops, file sync, hybrid cloud, linux, microsoft, mssql, networking, powershell, powershell core, security, sysadmin podcast, techsnap, virtualization, vpc, vpn, windows

    Wes is joined by a special guest to take a look back on the growth and development of Azure in 2018 and discuss some of its unique strengths.