HTH0014 - Back That aaS Up

MFA (again), PowerShell folding@home support, using a Zune 80 without a working screen, Minecraft on Raspberry Pi, probing your network with TCPDump, Teams (again??), and firewalling with iptables. Extended show notes available at https://hthpc.com/ Boot-Up (Intro…random topics) 00:17 • Combined MFA and Password Reset Registration Now Available: https://techcommunity.microsoft.com/t5/azure-active-directory-identity/combined-mfa-and-password-reset-registration-is-now-generally/ba-p/1257355 • PowerShell Folding: https://www.zdnet.com/article/microsoft-this-windows-10-powershell-script-lets-you-securely-fight-coronavirus-with-foldinghome/ • Dumb Windows bug of the week: If you have too many notifications, you'll stop getting notifications • State of the Zunion: Steve reviews two Zune AV docks • Zune 80 Menu Tree if you have a broken screen and need to use it blind: ○ Music ○ Videos ○ Pictures ○ Social ○ Radio ○ Podcasts ○ Settings § Wireless □ Wireless: on □ sync now □ Information □ presence: basic § Display □ backlight: 15 seconds □  brightness: medium □ tv out: off □ Background § Music § Pictures § Sounds: on § Touch: off § Radio § Language § about • O365 Groups to M365 Groups: https://techcommunity.microsoft.com/t5/microsoft-365-blog/office-365-groups-will-become-microsoft-365-groups/ba-p/1303601 Pinecraft 24:07 • Docker Minecraft Server • Correction: The best Raspberry Pi 4B has 4GB RAM, not 2GB. • Porting in worlds and swapping them out • The guide Steve used to set it up: https://dbtechreviews.com/2020/03/how-to-install-a-minecraft-server-on-openmediavault-5/ • docker start minecraft • docker stop minecraft Taking a Huge TCPDump 31:43 • Bandwidth issues with CSGO/meetings, but CSGO is the bigger issue • Ran TCPDump on the router to find the largest packets and try to figure out what is going on • <code>tcpdump -n -i eth1 -t greater 1000 -c 200 | cut -f 1,2,3,4 -d '.' | sort | uniq -c | sort -nr | head -n 20</code> • QoS in DD-WRT to play traffic cop Team up with Teams 35:38 • Breakout Rooms • Private Channels create new Site Collections • Raise hands in Teams meetings https://www.microsoft.com/en-us/microsoft-365/roadmap?filters=Microsoft%20Teams • Closed Captioning • Live Translation • SLAs for changes ○ Policies taking up to 48 hours I Pee Tables 45:20 • Identifying/Blocking IPs with iptables on DD-WRT • DD-WRT iptables: temporary vs permanent based on NVRAM • Check if an IP is blacklisted: https://mxtoolbox.com/SuperTool.aspx • Found a GitHub for automatic blocking, compatible with iptables: https://github.com/stamparm/ipsum • for ip in $(curl --compressed https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt 2>/dev/null | grep -v "#" | grep -v -E "\s[1-2]$" | cut -f 1); do iptables -I INPUT -s $ip -j -n DROP; done Ask the Stiffs: Question of the Week 51:16 • What is something new you want to learn? Outro - "Plus Delta" 53:02 • We help you, you help us: Rate us on iTunes • Website: https://hthpc.com