QUOTE(duckmanV @ Aug 3 2019, 07:27 PM)
They can look under ur modem/router(gateway) for the user:pass(or default login admin:admin or Bruteforce lol) that allow them to login to the router via their device to your router and mess up the setting, it's not possible to implement virus/trojan as router(gateway) don't have their own OS. The only way to infect your router is to modified the firmware, cause router to not usable or infected.
Change your router admin password
use WPA2
use Whitelist filter (why not blacklist you asked? Because if one would like to brute force your router they can't)
optional
Buy a better brand router that comes with a good firewall feature (Asus)
Thanks for the explanation.
For routers, isn't all branded routers like TP-Link, Dlink or even Tenda have firewall features similar as Asus?
QUOTE(SilentVampire @ Aug 3 2019, 07:31 PM)
They technically can, but it is going to be very hard to do. As for installing virus or Trojans, no.
At least assuring to know virus or trojans can't infect routers directly.
What if we want to ensure 100% that our guest (who may be a good hacker) will not be able to hack into our router hosting our main network (say 192.168.0.xxx). Will linking up another router as AP with a separate network (say 192.168.1.xxx) for guest wifi be a safer option?