1*4c84c69bSKristof Provost#!/usr/bin/env python3 2*4c84c69bSKristof Provost# 3*4c84c69bSKristof Provost# SPDX-License-Identifier: BSD-2-Clause 4*4c84c69bSKristof Provost# 5*4c84c69bSKristof Provost# Copyright (c) 2023 Rubicon Communications, LLC (Netgate) 6*4c84c69bSKristof Provost# 7*4c84c69bSKristof Provost# Redistribution and use in source and binary forms, with or without 8*4c84c69bSKristof Provost# modification, are permitted provided that the following conditions 9*4c84c69bSKristof Provost# are met: 10*4c84c69bSKristof Provost# 1. Redistributions of source code must retain the above copyright 11*4c84c69bSKristof Provost# notice, this list of conditions and the following disclaimer. 12*4c84c69bSKristof Provost# 2. Redistributions in binary form must reproduce the above copyright 13*4c84c69bSKristof Provost# notice, this list of conditions and the following disclaimer in the 14*4c84c69bSKristof Provost# documentation and/or other materials provided with the distribution. 15*4c84c69bSKristof Provost# 16*4c84c69bSKristof Provost# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*4c84c69bSKristof Provost# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*4c84c69bSKristof Provost# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*4c84c69bSKristof Provost# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*4c84c69bSKristof Provost# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*4c84c69bSKristof Provost# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*4c84c69bSKristof Provost# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*4c84c69bSKristof Provost# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*4c84c69bSKristof Provost# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*4c84c69bSKristof Provost# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*4c84c69bSKristof Provost# SUCH DAMAGE. 27*4c84c69bSKristof Provost# 28*4c84c69bSKristof Provost 29*4c84c69bSKristof Provostimport logging 30*4c84c69bSKristof Provostlogging.getLogger("scapy").setLevel(logging.CRITICAL) 31*4c84c69bSKristof Provostimport math 32*4c84c69bSKristof Provostimport scapy.all as sp 33*4c84c69bSKristof Provostimport sys 34*4c84c69bSKristof Provost 35*4c84c69bSKristof Provostdef send_rst(src_ip, src_port, dst_ip, dst_port): 36*4c84c69bSKristof Provost sp.send(sp.IP(src=src_ip, dst=dst_ip) / 37*4c84c69bSKristof Provost sp.TCP(sport=src_port, dport=dst_port, seq=1, flags="R")) 38*4c84c69bSKristof Provost 39*4c84c69bSKristof Provostsend_rst(sys.argv[1], int(sys.argv[2]), sys.argv[3], int(sys.argv[4])) 40