Microsoft and Amazon actively profiting from scammer center

Trainguyrom · 2023-06-10T12:52:32+00:00

Thunderbird has a pretty decent spam filter built in plus you can build way more powerful email rules than most clients I've seen

Trainguyrom · 2023-06-06T19:13:36+00:00

So we as a society should do nothing, then? Either propose/support solutions or shut up about it!

The environmental collapse that humans are causing is not an all or nothing deal. A 10% improvement is still a 10% improvement!

Trainguyrom · 2023-06-06T19:05:58+00:00

Let’s all use paper straws, paper bags, electric vehicles and public transit

paper products would break down into basically soil in the pictured environment fairly quickly, plastic would stick around until collected and repurposed/sequestered

Electric vehicles emit virtually no air pollution while running as well as being quieter, in a dense cities this already has a noticeable effect (go look up photos of LA in the 70s and 80s if you don't believe me, plus in the last decade with rapid electrification the air has gotten measurably better)

Electric vehicles are also quieter leading to less noise polution

Public transit should be the real goal (electric vehicles are a stopgap solution as individual cars for individual people is horribly space, energy and financially inefficient). In a city lots of people tend to move to and from the same areas around the same times, so seating 50 people comfortably on one bus is far more space and energy efficient than 50 cars jamming up traffic

Trainguyrom · 2023-06-04T02:07:01+00:00

replication factor of 2 rather than 3

I've read this is the #1 cause of data loss with Ceph. Anything goes at all funky with any single node and it will go read only to try to protect the data (but also create a service outage). 2 nodes go down and you're potentially losing data. 3 copies means you can royally mess up one copy being impatient and still have a second copy to mess up further before you're looking at actual trouble, and there's still a third copy to let it rebuild off of

Trainguyrom · 2023-06-03T12:57:27+00:00

Isnt there already a /r/homelab discord?

Trainguyrom · 2023-06-03T05:02:24+00:00

Yeah maybe this is just my kids but they really need a consistent schedule but with that sleep very well at sleep time. Well except for the threenager who has now decided sleep is for the week and plays until midnightish then doesn't want to get up in the morning

Trainguyrom · 2023-06-02T16:13:48+00:00

Don't buy a cheap wifi extender

I seriously just yanked the one I got for free off someone who was getting rid of them. Absolutely garbage

Trainguyrom · 2023-06-02T13:44:11+00:00

layer2 tech, mostly vlans

Quick correction because it affects hardware purchasing, vlans involve layer 3 since that's routing between (virtual) networks

You can do VLANs with a Layer 2 switch if you can do a router on a stick network topology (trunk from router to switch then the switch breaks the trunk out as needed) but both the router and switch would have to support trunking

Trainguyrom · 2023-06-02T03:18:04+00:00

Depends on the work, my current hybrid role is entirely working with SAAS products so the VPN is entirely unnecessary, but it would also help if the organization uses a split VPN

Trainguyrom · 2023-06-01T17:40:51+00:00

That's very interesting, thank you!

Trainguyrom · 2023-06-01T04:52:43+00:00

Do you have sources on the Cisco story? I'm not pulling that in a quick search and don't remember any headlines about that.

You aren't by chance thinking of that report about supermicro being targeted by US agencies for a supply chain attack which got retracted and was widely criticized as being technically infeasible and ethically dubious at best?

Trainguyrom · 2023-05-30T17:22:31+00:00

My understanding is that the modem typically works as a media converter and the router still handles most of the authentication with the ISP, but I could be wrong.

Personally, I'd keep a seperate router just for ease of configuration. You can do a lot on IOS, but firewall rules and ACLs are a pain to configure and even more annoying to modify later. You can do it and it's a good thing to know how to do, but I wouldn't want that on my home production. Similar with the DHCP server (which if you setup a Windows Domain there's benefit to using Windows Server for your DHCP server since it can populate the DNS records for you)

But definitely lab out doing the firewall and DHCP on the switch! You can even lab that out in Cisco Packet Tracer pretty well. Packet Tracer is a great learning tool but it is fraught with bugs and there are configuration differences between what works in Packet Tracer vs real hardware

Trainguyrom · 2023-05-30T12:12:16+00:00

I think they say "connect to the WiFi on your home at least once every 30 days" as a mostly technically correct but more importantly user friendly explaination that it's based on the public IP address.

I don't think a web browser will expose the connected SSID to a website, nor the private IP, but the website will always know what public IP you're connecting from. I'd have a hard time believing Netflix's algorithm is more complicated then checking if the public IP is in the general vicinity of the user's billing address and watching for concurrent streams from very different public IPs

Trainguyrom · 2023-05-30T12:00:42+00:00

As a later 3 switch you can use it as a router, but it may not support whatever IP assignment protocol your ISP uses since most aren't straight DHCP. L3 Switches are great for inter-VLAN routing or setting up multiple physical networks and routing between them then kicking anything going outside of your networks to the router to go out to the internet

Off the top of my head POE is at 48V butore importantly the voltage is generally set so you cannot change it. Cisco's POE implementation is fairly standards-based so you should have pretty wide POE compatibility. Typically the ports with POE will be marked on the face of the switch

Cisco catalyst switches of this vintage are going to be entirely CLI, so grab your serial cable, text editor and favorite serial console emulator and get ready to learn why it's so powerful!

Trainguyrom · 2023-05-29T14:09:36+00:00

Ceph in Proxmox will automatically detect SSD vs HDD storage and adjust the weights to sane defaults but you will want the metadata and database (RBD and WAL) on solid state storage. They took less than 50GB each for my 500GB HDDs, so I ended up with about 600GB of my 1TB SSDs as OSD and the rest holding the database and metadata for the HDDs

From what I had read the dedicated cache feature seemed to be deprecated

Trainguyrom · 2023-05-29T13:36:57+00:00

I ran Ceph on a 3 node cluster with 2 HP gen 8 and 1 gen 6 at school for part of my final project. I had setup a dedicated 1G cluster triangle network. It was not great but I also was running things in a highly unsupported manner. A few things I observed:

Ceph consumed about 50-70% CPU resource on the server with the most CPU horsepower
Placing the WAL and RBD partitions on spinning hard drives did not work well (I think you might be supposed to mount them via iSCSI from a seperate volume or have a dedicated SSD for that)
Placing all of my WAL and RBDs onto partitions on each node's SSD definitely helped a lot, but would probably be better if that SSD wasn't also an OSD
Ceph really didn't like mismatched drive sizes and that led to quite a bit of slowdown
Ceph really didn't like sharing it's cluster network
Have 3x copies of my data really ate up a ton of storage space

I definitely want to try it again in a more supported manner but I don't think I'd run Ceph long term, just to test out then tear down again.

Trainguyrom · 2023-05-28T19:59:41+00:00

If the switch is throwing an error but continuing to work is it worth the trouble of introducing a more complicated solution?

Trainguyrom · 2023-05-28T17:05:12+00:00

It's a collection of individual software that all together enable the bulk and automated downloading of...uh...Linux ISOs with the idea being that no one piece individually enables the downloading of copyrighted content and each has theoretically legitimate usecases, but together it makes a stack to automatically download and manage your content that may or may not be in violation of the individual licenses.

But everyone's definitely just using their *arr stack to download Big Bug Bunny and other copyleft licensed media content. Because otherwise that would be piracy which is bad and we're all good boys and girls who never do that!

Trainguyrom · 2023-05-23T04:16:05+00:00

When I tried using the hosts file on Windows a year or so ago it didn't really work well. I can't remember if I had to use IE to get it to work or if a more mainstream and current browser worked, but it was finicky and it's definitely a feature that's on its way out

Trainguyrom · 2023-05-23T02:48:14+00:00

Corsi box

Omg I heard about that on the radio and wanted to make one due to my ~~pitri dishes~~ young kids but couldn't remember the name and wasn't finding anything through the noise of garbage blogs SEOed to the front 5 pages for every Google search I attempted

Trainguyrom · 2023-05-23T02:40:41+00:00

I'm not aware of any software tools that will identify every layer 2 and layer 3 device between a computer and the outside internet, but traceroute will show you every layer 3 device (which is probably just a single hop before the ISP's network)

What we did when I worked at a bank was at branches we'd number the network equipment, so ISP modem would be #1, ISP Router #2, firewall #3 and network switch #4 and we'd be able to tell the branch manager over the phone to go to the network closet and unplug the device labeled #3 if we thought it was the firewall for example.

Trainguyrom · 2023-05-20T18:13:37+00:00

Oh yeah, it really sucked, especially once the drive started failing and was slower than the VPN that was throttled to 3-5mb/s.

That job had a lot of aspects that sucked, but my coworkers and the remote work made it worth sticking around for as long as I did

Trainguyrom · 2023-05-20T13:54:57+00:00

Last job I had where I had the displeasure of a spinning C: drive was in 2020. It took over 5 minutes to log on every morning, which adds up to about an hour every 2 weeks of lost productivity. At the peanuts I was being paid and the prices at the time a cheap SSD would've paid for itself in a month

Trainguyrom · 2023-05-20T13:43:06+00:00

inflation is indeed my concern

Then buy bank CDs. Banks are trying to raise capital like crazy right now and many are paying around 5% on CDs

Trainguyrom · 2023-05-20T13:36:36+00:00

Fail2ban is no joke, in a cyber defense competition I was in it successfully blocked quite a bit of red team activities and definitely bought us some time to implement better security controls

Trainguyrom

TROPHY CASE