packet.drop — Atlas Script reference

Syntax

Atlas Script

packet.drop()

Parameters

This method does not accept arguments.

Return value

See the remarks for the returned value and runtime behavior.

Remarks

Drops the packet so it is not delivered. A drop takes precedence over any edits made in the same event; packet.pass() cancels it.

Examples

Block traffic to and from one address.atlas

const string BLOCKED = "192.0.2.10";

event on_start() {
    if (!network.capture("ip.DstAddr == 192.0.2.10 or ip.SrcAddr == 192.0.2.10")) {
        system.log("Network capture could not start");
    }
}

event on_network_send() {
    if (packet.dst_ip == BLOCKED) {
        packet.drop();
    }
}

event on_network_recv() {
    if (packet.src_ip == BLOCKED) {
        packet.drop();
    }
}