I know this doesn’t answer your question, but… Friend… I don’t know how old you are but I believe this is a valuable lesson at any age.

Take a deep breath, and relax. The stranger doesn’t give a shit about what you do or who you are. You will never meet them again, why would you be embarrassed about them learning something (admittedly pretty tame) about you?

Prudence is both allowed and intelligent, don’t walk around the office telling people every detail of your sex life… but I PROMISE, no one gives a crap. There’s no reason to be this sensitive about people learning something about you.

I can’t make any guesses, but you have no reason to feel this guilty about what you do with your time unless you are literally committing crimes. Just, try not to worry about it so much, it will probably make you feel heaps better, haha.

Also, even if the Field Tech that came out to look at your shit can’t see it, your ISP can, and whomever you or your ISP use as a DNS server, or the VPN company you use.

Probably just saw the download data. He probably wouldn’t even care any way. Plus you won’t see him again.

Look I’m an independent enginner doing remote or on site support. I see all sorts in people’s history etc. Do I care No. Let’s face it everyone pees poos and screws.

Ain’t no shame we’re all the same.

use zerotier opnsense and dns over tls. and zenarmour for ad blocking

Does the router log show your search terms? In modern search engines, no.

Does the router log show the domain names you’ve visited? Yes.

Go in your windows computer and type in ‘netstat’. Every router on the traceroute can see the connections.

Yes ! If you gave the access he can see you recorded internet history .

Your router may have logs which they can check to look for issues, so could be that.

I’ve seen some routers where it displays graphs breaking down the types of usage (Web. FTP, gaming, video) although these should be taken with a pinch of salt as it’s down to what is expected that port/protocol to be used for, so it could be that if your router has a page that displays that.

I wouldn’t usually expect your router to keep an extensive history of your DNS requests (however your ISP may do so, so bear that in mind if you plan to visit illegal websites). They would not know what page you visited though (assuming you are connected using HTTPS).

If they had a reason to need to look at your computer they might have seen your browsing history.

How much they can see depends on what the router retains so the model might allow you get get more accurate responses. Generally, routers that have logging turned on will just retain IP addresses along with some metadata about the packets like time, direction, etc. More robust routers will also retain DNS requests, URLs, etc but very few of them have the capacity to retain them for very long because those logs just keep growing.

This is as much as they can see if you’re router even has deep packet inspection https://imgur.com/a/R4MzGNV

the “man” sees everything… pay no attention to that drone hovering outside your window…

It depends on which devices he had access to. If he was using your computer, he could potentially access your full history, but you would’ve been able to see him do it.

If he was just using your router, it would be highly unlikely he was able to review your history. However, if you’re a high-value target (someone trading with bitcoins or something like that), an hostile party could pretend being from the ISP to try to infiltrate your network.

They can definitely see where traffic goes. If you are not using their DNS however, and you are using DoH they don’t see which URL you are using, but they do see the IP traffic for very obvious reasons.