Hi, I am using WiFi hotspot feature of Ubuntu 18.04 to create a hotspot for my devices. I need to prevent different devices on the network from contacting each other. More specifically, I have two phones on the network, I would like them not to be able to send any packets to each other. Right now if phone 1 is using IP address 10.42.0.172 and phone 2 is using 10.42.0.59, I can use phone 1 to ping 10.42.0.59. I would like to disable connections between different hosts on the network created by the hotspot. I tried using iptables to drop local traffic. However, it seems like the iptables don't have any effect on these packets. I do see local packets on wireshark though. I'm wondering if local packets are forwarded directly without hitting the iptable rules. Is it possible to use iptables or ebtables to filter these packets? Is there any other solution to this? Thank you
