I recently learned about LocalSend and was intrigued by how it functioned by only using the WiFi network of the devices. I did not know my LAN had these capabilities.

Now that I’ve learned about it, I am excited to know if there is anything else I can do with it. Perhaps there could be a way to send prank notifications to all the connected devices, create a private chat room, or have custom LAN parties.

I genuinely do not know anything about how WiFi or LAN in general works in this matter. Is it possible for me to build my own applications that make use of these features? If so, I would love to get a direction on what resources or guides I should be looking for. If not, I would still be happy to use similar pre-built applications.

39 points

If you live near a Starbucks, you can buy a cheap router, name its network “Starbucks Public Wifi”, make it public with no password, but also not connect it to anything.

People will connect, and get really really mad and Starbucks will be just as confused as the customers.

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61 points

Na, the staff are overworked enough. Don’t lump something they have no control over on their laps.

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10 points

If you can someone do it to the CEO’s private jet for his 1,000 mile commute to work a few times a week that’d be cool.

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18 points

Then setup a DNS server and a fake website to trick people into giving you their credit card information, free money!

PSA don’t do this, it’s obviously sarcasm ;)

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7 points

That’s a special kind of evil. I think I’m mostly ok with it.

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5 points

This is done in Hotels everyday to use Keyboard loggers and get your information.

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6 points

Always use a VPN when connecting to an open network.

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1 point

pineapple wifi

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34 points

You can buy a raspberry pi and have Pihole setup on it. It’ll act as your local dns server and block any ad domains for the whole household.

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5 points

Damn does this mean I have to buy another raspberry pi or can the one running octoprint serve double duty?

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3 points

At least a Pi 4 can do both. Source: Did do exactly that.

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1 point

Thank you!

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1 point

Orange pi zero 3, 1.5GB. plenty for pihole and 30€ instead of 100€ or whatever bullshit RPI is charging these days.

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2 points

I had done this for several years but recently I’m running into the issue where my home router won’t let me specify a DNS server that is on the same subnet. I dont have multiple networks running at home so I can’t make a Pihole work anymore.

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2 points

You can set a static IP on the router, disable it’s DHCP, and have pihole manage DHCP with the routers static IP as the gateway

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2 points

That’s a weird situation. Have you tried spinning up a second subnet on your modem?

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31 points

A simple network share.

Does your router have a USB port?

Plug in a thumb drive (32-64gb is fine) and configure it in your router’s admin interface to share on the network. (FTP and SMB shares)

An easy way to have all devices in a house able to access a shared directory. (Pictures, movies, music, files)

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24 points

Congrats on dipping your toes into networking! Don’t let it suck you in too much or you’ll end up with a career change.

Plenty of resources out there to learn from, just pick a project and try to implement it. Or just play around with netcat (just ‘nc’ nowadays).

Look into the TCP/IP stack (or the OSI model, both cover the core concepts) for an overview of how applications talk to each other. This will also help you understand how LocalSend probably works (my guess is broadcasting to your network and seeing what devices are listening on a certain port. Some LAN-enabled games work like this, others aren’t as magical and ask you to provide an address and a port).

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18 points

Set up hotspots to amuse your neighbors:

WeCanHearYouHavingSex
FBISurveilanceVan#63
FreeCandy

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19 points

I’ve been doing the FBI Surveillance van one for years. 50 is the 5G band and I have 24 as the 2.4G band.

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7 points

My neighbors had the FBI Surveillance Van SSID, so naturally I set mine up as “Definitely Not Russian Hackers”

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