WLUG November 2021

wlug@lists.wlug.org

14 participants
5 discussions

Reminder: November WLUG Meeting at the Hudson Public Library! Topic: Intel Management Engine.

by Tim Keller

Hey Everybody, We've got a meeting this Thursday November 18th, 2021 at 7pm - 8:30pm at the Hudson Public Library! Firstly, a big shout out to Joshua Stone for making the reservation at the Hudson Public Library. Secondly, the meeting will also be online at our usual Jitsi location for people who can't make it in person. https://meet.jit.si/WlugMA The topic we'll be discussing at the meeting is the Intel Management Engine technology buried in every Intel CPU. This technology includes a version of Minix running on a separate core inside your CPU you don't control. Moreover, with the right software, changes to your machine can be made remotely, even when the system is powered off (but connected to power). As with all this stuff, of course since the whole thing is cooked into the firmware, it's full of security flaws, etc.. We'll talk about those flaws and how to disable it! We'll also likely touch on the Tesla Dojo D1 processing unit. They've made some claims that I've posted to the mailing list. Logan did some digging and it turns out their claims are not as blow your mind as would be first interpreted. The Hudson Public Library does allow food and drink, so I will bring the usual pretzels and snacks. Afterwards we will be going to Rail Trail Flatbread <https://railtrailflatbread.com/>for dinner. Toss me a line privately if you'll be attending so we've got an idea of how many people will be going out for dinner. I look forward to seeing you there! Later, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

1 week, 2 days

Dojo D1

by Tim Keller

I just finally got to see the stuff about Tesla's Dojo Processor stuff. 9 PFLOPS per "tile" and 36 TB/s of bandwidth. https://www.youtube.com/watch?v=pPHX7e1BxSM Um..wow. Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

1 week, 5 days

Use same hostname internally and externally

by brad

All, To quickly summarize my problem/question, I’d like to host a nextcloud server at my house and be able to access it with the same hostname whether I’m home or away. I own a domain, let’s call it example.com. Its main DNS record points to a node at digital oceans. However I’d like to host a sub-domain at my house, let’s call it home.example.com. Currently home.example.com resolves to a routable IP address at my house. - When I’m on the road, I’d like to be able to connect to https://home.example.come - When I’m home, I’d like to be able to connect to https://home.example.com. The above works on a well-behaved desktop receiving dns servers via dhcp. Specifically, I have setup local dns to resolve home.example.com to 192.168.1.1. Searching this topic has taught me that this method is called Split-DNS. However android and iOS do not appear to honer my local dns server — I’m not sure why — so they resolve the address to a routable IP and connect from within the private 192.168.1.0 subnet. My firewall sees this and drops it b/c it is a non-routable IP address connecting to the external interface. (I got this info by running tcpdump and watching traffic). Has anyone attempted something similar? Is there something I’m overlooking? (Probably) My goal is to not do special configurations on enduser devices. Thanks, — brad

1 week, 6 days

Meeting in Hudson and Main Street Contest

by Joshua Stone

Hey all, I'm posting to confirm that the venue for our upcoming in-person meeting at 7PM will be held at the Hudson Public Library! We may also want to look into eating options after the meeting, many of which are on Main Street: https://www.discoverhudson.org/taste/ My vote goes to the Rail Trail Flatbread which is close to the library and has some incredibly tasty menu items! And speaking of main streets, I'm happy to announce that Hudson has become a semi-finalist for the Main Street Contest! https://mainstreetcontest.com https://mainstreetcontest.com/profile/102 I think it's awesome that the town has seen so much growth since we moved here and gives us a sense of community. I'm excited to see where it'll go! - Josh

1 week, 6 days

Next Meeting November 18th, NOT the 11th.

by Tim Keller

Hey Gang, My birthday is on the 11th and the family is taking me out for dinner. We'll have the meeting on the 18th instead! I've got some ideas for topics, but if someone has a burning desire to talk about something, let me know! Otherwise I think I'll show off my experiments with TrueNAS scale. Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

2 weeks, 3 days

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WLUG November 2021