tcpkiller.py 文件源码

def ignore_packet(self, packet, proto):
        src_ip = packet[proto].src
        dst_ip = packet[proto].dst
        src_port = packet[TCP].sport
        dst_port = packet[TCP].dport

        # Target or allow by IP
        if (src_ip in self.allow or dst_ip in self.allow) or (src_ip in self.allow_src) or (dst_ip in self.allow_dst):
            return True
        elif (self.target and ( self.src_ip not in self.target and self.dst_ip not in self.target)) or (self.target_src and not src_ip in self.target_src) or (self.target_dst and not dst_ip in self.target_dst):
            return True

        # Target or allow by Port
        if (src_port in self.allow_ports or dst_port in self.allow_ports) or (src_port in self.allow_sport) or (dst_port in self.allow_dport):
            return True
        elif (self.target_ports and (not src_port in self.target_ports and not dst_port in self.target_ports)) or (self.target_sport and not src_port in self.target_sport) or (self.target_dport and not dst_port in self.target_dport):
            return True

        # Target randomly
        if self.randomize == "often" and randint(1, 10) < 2:
            return True
        elif self.randomize == "half" and randint(1, 10) < 5:
            return True
        elif self.randomize == "seldom" and randint(1, 10) < 8:
            return True
        else:
            return False


    ###############################################################
    # Scapy                                                       #
    ###############################################################