Hello and thanks for your reply.
I know that there are several more options for me but the reason I came here is that I want to share them on my LAN, so that the speed is maintained. Also I don’t wanna connect to the internet is the other reason (for sharing files). And as avast! was the one causing problem, I decided to get some help from here. If there are some exceptions or some other friend IPs that avast uses to permit local area file sharing which I don’t know about, please let me know about it. If not please let me know for a solution.
Regards,
Ananya