Travel routers improve your life [video]
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It's been very helpful so far for the WiFi repeating and being able to override the DNS across the board, however, I've struggled to find a decent LTE stick for it. I bought a Huawei E3372-325 LTE stick, but unfortunately it doesn't work properly. Having searched for the issue, I'm not fully understanding what needs to be done.
I'd love some suggestion for a decent stick that works with OpenWRT. I've struggled to find a good resource for this where I can narrow down products that would work with it, and suit my needs.
Similar reality exists regarding security through obscurity. Is it perfect? No; nothing is. But if the cost to even understand the system in play is very expensive, that alone is a deterrent to low-effort / drive-by attackers.
Security measures are judged by how much they cost to implement, and how effectively they reduce the threats you will actually face, and geolocation blocking has the amazing one-two punch of being cheap and effectual against real world threats. Realistically, you're going to face a lot more automated hacking attempts than you are hackers actively trying to workaround security safeguards your company has implemented. It also generates indicators of compromise, so even if this doesn't stop a hostile actor, it can reveal their presence.
Getting to 100% security is too expensive and it's also impossible.
The proper way to do that is to VPN back home. They should sell these as preconfigured pairs where anything plugged into one's ethernet port comes out of the other (with some kind of layer-2 VPN between them).
Ironically it's most likely cheaper to get the cheapest 5G capable Android phone you can and just tether it.