Issue with unknown network devices.

[PotatoGrower]

Hey there guys, need assistance trying to figure out

this issue I'm having with my network.

 

Lately anti virus has popped up with alerts of malicious network activity

that it had been blocking, when i logged into my router i noticed 20+ unknown network devices attached to my

network via ethernet, i restarted my router, turned on my mac filter,

and only had my PC, NAS and phone mac on the filter, blocking everything

else and waited to see if any other activity continued, i woke up this morning,

and noticed these unknown network devices connected again, detected by my antivirus

and somehow bypassed the mac filter.

 

I'd like to consider myself pretty experienced with PC's, but this isn't an issue I've had

before.

using a Linksys EA6500 with a 2TB Segate Central 2TB NAS with genuine windows 10 with the latest version ESET Smart Security.

 

Ran scans of both the PC and network, and i cannot find any sort of malware, and i haven't downloaded anything malicious, I'm very confused.