-- During The Show --

00:26 Response to IPv6 segment - Rafal

• IPv6 has 3 specifications to make the IP address private
  • Combine and Hash the MAC with the IP before adding it
  • Use things like install time, start up time, etc
  • Make it random with every connection

03:50 Dealing with Container Volumes - Jon

• Explore Kubernetes
• Check out OKD

06:20 - College Advice - Matt

• Technical writing is more likely remote
• More Companies looking for network security consultants

11:20 User Responds to 227 Issue - Andy

• Ryzen CPU issue
• Change the "Power Supply Idel Control" in the BIOS
• Bugzilla Link

12:20 Portfolio

• File manager made for Linux mobile
• Github
• Gnome Blog Article

19:30 Matrix Spaces

• Spaces replaces communities/flair
• Public Spaces - ie. Destination Linux Community
• Private Spaces - Altispeed
• Personal Spaces - Group rooms for yourself
• Still rough - releasing now to get feedback
• Coming Soon to Spaces
  • Auto-joining rooms when joining a Space
  • User permissions which cascade from Spaces to rooms
  • Maturing Subspaces and Space hierarchies
  • Improving onboarding into Spaces
  • Space bridges
• Element Blog Post

32:40 Video Editing on Chromebooks

• Blog Post
• Openshot releases for Chromebooks

39:50 Rocky Linux

• Article
• Rocky Linux
• CentOS Stream

44:15 KDE Plasma

• 5.22 Beta is out
• New Hamburger Menu
• Lots of Improvements and Bug Fixes

46:40 FOSS/Less Permissive License

• Register Article

Call to Action

• SELF will be virtual this year, hosted again by yours truly!

• SELF Link

• SELF dates June 10-12

• Email volunteers@minddripmedia.com with your skill set and contact details

-- The Extra Credit Section --

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This Episode's Podcast Dashboard

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-- Stay In Touch --

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-- Twitter --

• Noah - Kernellinux
• Ask Noah Show
• Altispeed Technologies

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-- During The Show --

01:00 - VLAN question - Scott

• Management VLan is for admin not printers etc
• Set the switch to only allow access on the management VLan
• Use firewall rules to allow or deny cross VLan access

08:10 - Replace Unify with TP Link Omada? - Charlie

• Checking it out, will get back to you

09:00 - Just FYI problem accessing Wireguard tutorial - Paul

• New Wireguard Tutorial

09:30 - What Router Should I buy? - Nik

• Netgate SG-1100

12:15 IPv4

• Broadcast traffic - sends a packet to everyone, not forwarded by routers
• Broadcast Domain - Any computer that can hear a broadcast packet
• ARP Table - Table that matches switch port to mac address
• Computers also keep ARP Tables - Including Host Name, MAC Address, IP Address
• Rebooting a switch will cause it to rebuild the ARP Table
• Private IP Addresses - IPv4 Addresses set aside for internal networks
• RFC 1918
• NAT - Network Address Translation - Public IP <-> Private IP
• [IP Chicken](ipchicken.com)
• Router typically hands out DNS Server+IP Address+Hostname

30:00 IPv6

• IPv6 packet types
  • Anycast
  • Multicast
  • Link-Local
• IPv6 Anycast - Send out a packet to an IP address, expecting multiple devices to have the same IP Address but only the closest responds
• IPv6 Multicast - Tries to only hit intended IP addresses
• Link-Local - Automatically assigned, non route-able, Required for IPv6
• Unique-Local - Private or Public route-able IP address
• Host bit of IPv6 identifies your device across networks

41:50 Reading IPv6

• First hextet = IANA Assigned prefix
• Second hextet = Your Geographical region
• Third hextet = Your ISP

• Fourth hextet = Your Network

• Leading zeros can be omitted

  This IP:

  FE80:0ED1:0098:000A:0000:0000:0AED

  Can be expressed like this:

  FE80:ED1:98:A::AED

• IPv6 Loopback address
  ::0

48:00 Getting an address

1. Computer sends an icmpv6 packet called a Router Solicitation
2. The router responds with its information (with its Link Local address)
3. Either the router generates an ipv6 based on the requesting computers MAC address OR the computer chooses its own IP address
4. The computer sends a Neighbor Solicitation packet which is basically the computer attempting to ping a device on the network with its IP address to see if its chosen IP already exists

• IPv6 you are on the internet by default unlike IPv4 in most setups

• "Host" bits are based on your MAC address, which can be used for finger printing/tracking

Addressing

Address broken into hextets

-- The Extra Credit Section --

For links to the articles and material referenced in this week's episode check out this week's page from our podcast dashboard!

This Episode's Podcast Dashboard

Phone Systems for Ask Noah provided by Voxtelesys

Join us in our dedicated chatroom #GeekLab:linuxdelta.com on Matrix

-- Stay In Touch --

Find all the resources for this show on the Ask Noah Dashboard

Ask Noah Dashboard

Need more help than a radio show can offer? Altispeed provides commercial IT services and they’re excited to offer you a great deal for listening to the Ask Noah Show. Call today and ask about the discount for listeners of the Ask Noah Show!

Altispeed Technologies

Contact Noah

live [at] asknoahshow.com

-- Twitter --

• Noah - Kernellinux
• Ask Noah Show
• Altispeed Technologies

Special Guest: Steve Ovens.

Support Ask Noah Show