pcap.net block or edit packets

Question

I want to manipulate a games roomlist, for filtering the maps. My idea was, to filter the incoming packets for new rooms.

I can't find anything about how to edit or block incoming packets on the fly with pcap.net in c#.

is this possible to do?

Answer 1

If pcap.net is a wrapper for WinPcap, it is not possible - libpcap/WinPcap can't block incoming packets, or modify them before they reach the networking stack, it can only passively capture packets and inject them.

Answer 2

For packet editing/filtering you can try WinDivert. The API is C so you'd need to write your own c# binding.

(disclosure: WinDivert is my project.)