“Trust it in what way?”
Keeping the thieving neighbors from accessing the internet on my dime.
Arris router modems do not work with Linux laptops. We had a new modem installed, it’s so much faster.... if you have Windows. I could connect if I had about 20 ft of Cat 5 ethernet cable though.
I have actually given my neighbor our wifi password to help his daughter out with downloading a file for school. His network wasn’t working and it was the weekend. Hooked him up and he downloaded the file in a flash through my house walls, across the yard between us and his house wall.
He had the cable company out the next day for the whole day, but none the less, got him taken care of for the day.
The NSA can get around that, but script kiddies and most others can't. The ones that can, have jobs and pay for their own internet access.
No network, wired or wireless is 100% secure. If you are doing something that sensitive, it should be on a computer not connected to a network at all.
/johnny
Just turn on WPA2 with a strong pass phrase.