After checking on tailscale privacy policy, I also suggest to drop tailscale and use mullvadvpn if you live in EU or US (it is great) or protonvpn. You can install WG Tunnel from F-Droid and add wireguard configuration from your VPN provider as well. It is consume only 1-3% during the day on my device.
Thank you for advice and additional info. I bought a modern router Cudy WR3000 with WiFi-6 support. And it has the last firmware update available.
Hi, thank you for your answer. I solved the problem. I performed a router factory reset. After that I run the security test again and it didn't find any vulnerabilities.
Today I scanned my router with routersploit. The scan ended and showed one vulnerability: eseries_themoon_rce.
I searched the internet and found that this is a vulnerability in Linksys E-Series routers. But I am not on linksys at all. And I didn't find anything about getting rid of it.
I'm wondering if someone knows how to make this vulnerability eliminate?