Is this possible?

[Substance]

Hi OcUK,

My sister lives next door and I let her share my internet using wifi,

Recently I have been getting pings of 1000+ and she says she only uses the internet to browse the web and view emails, she very rarely downloads.

I was wondering if it would be possible for her to use her PC as a "hub" and let other people in her house (with their own computers) use the internet via her pc?

She is networked with other people who live in the house via Ethernet for gaming,

I have mac address restrictions on the router so no other computers can connect directly but I don't know if they could connect via being networked to her pc,

Thanks

 

[Substance]

I think you misunderstood me, i don't want her housemates to be able to use my internet, i was just wondering if it was possible for them to leech it in it's current state

 

[Substance]

Yes, they could.

Rubbish, would there be any way I could restrict access to only her pc or is this not possible from my end?