Luis Baldellon

Generation

generate functionSat, 14 Dec 2024

crea un controlador ryu que tenga las siguientes reglas: Configuración de Reglas por VLAN​: VLAN 10: Aislamiento completo (bloqueo de tráfico externo). VLAN 20: Comunicación permitida con VLAN 30. VLAN 30: Comunicación permitida con VLAN 20. Configuración de QoS​: Prioridades de tráfico: Alta prioridad: 150 Mbps (para VoIP). Prioridad media: 100 Mbps (para tráfico HTTP). Baja prioridad: 50 Mbps (para tráfico general). Manejo de ACLs y Reglas de Control​: Bloqueo de tráfico externo para VLAN 10. Permitir comunicación entre VLAN 20 y VLAN 30. Identificación y gestión de tráfico por tipo (VoIP, HTTP, general). Función add_flow: Agrega flujos con prioridad específica y acciones determinadas.

Aquí te muestro un ejemplo de cómo podrías implementar un controlador Ryu con las reglas que mencionaste: ```python from ryu.base import app_manager from ryu.controller import ofp_event from ryu.controller.handler import MAIN_DISPATCHER, DEAD_DISPATCHER from ryu.controller.handler import set_ev_cls from ryu.ofproto import ofproto_v1_3 from ryu.lib.packet import packet from ryu.lib.packet import ethernet from ryu.lib.packet import vlan from ryu.lib.packet import ipv4 from ryu.lib.packet import tcp from ryu.lib.packet import udp from ryu.lib.packet import icmp from ryu.lib import hub class Controlador(app_manager.RyuApp): OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION] def __init__(self, *args, **kwargs): super(Controlador, self).__init__(*args, **kwargs) self.mac_to_port = {} self.flujos = {} @set_ev_cls(ofp_event.EventOFPSwitchFeatures, MAIN_DISPATCHER) def switch_features_handler(self, ev): datapath = ev.msg.datapath ofproto = datapath.ofproto parser = datapath.ofproto_parser match = parser.OFPMatch() actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) def add_flow(self, datapath, priority, match, actions, buffer_id=None): ofproto = datapath.ofproto parser = datapath.ofproto_parser inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] if buffer_id: mod = parser.OFPFlowMod(datapath=datapath, priority=priority, match=match, instructions=inst, buffer_id=buffer_id) else: mod = parser.OFPFlowMod(datapath=datapath, priority=priority, match=match, instructions=inst) datapath.send_msg(mod) @set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER) def _packet_in_handler(self, ev): msg = ev.msg datapath = msg.datapath ofproto = datapath.ofproto parser = datapath.ofproto_parser pkt = packet.Packet(msg.data) eth = pkt.get_protocol(ethernet.ethernet) vlan = pkt.get_protocol(vlan.vlan) ipv4_pkt = pkt.get_protocol(ipv4.ipv4) tcp_pkt = pkt.get_protocol(tcp.tcp) udp_pkt = pkt.get_protocol(udp.udp) icmp_pkt = pkt.get_protocol(icmp.icmp) if vlan: vlan_id = vlan.vlan_id else: vlan_id = 0 if ipv4_pkt: src_ip = ipv4_pkt.src dst_ip = ipv4_pkt.dst else: src_ip = None dst_ip = None if tcp_pkt: src_port = tcp_pkt.src_port dst_port = tcp_pkt.dst_port elif udp_pkt: src_port = udp_pkt.src_port dst_port = udp_pkt.dst_port else: src_port = None dst_port = None if icmp_pkt: icmp_type = icmp_pkt.type else: icmp_type = None match = parser.OFPMatch(eth_dst=eth.dst, eth_src=eth.src, vlan_id=vlan_id, ipv4_src=src_ip, ipv4_dst=dst_ip, tcp_src=src_port, tcp_dst=dst_port, udp_src=src_port, udp_dst=dst_port, icmp_type=icmp_type) if vlan_id == 10: actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] self.add_flow(datapath, 0, match, actions) elif vlan_id == 20: if dst_ip in ['10.0.0.1', '10.0.0.2']: actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] self.add_flow(datapath, 0, match, actions) else: actions = [] self.add_flow(datapath, 0, match, actions) elif vlan_id == 30: if src_ip in ['10.0.0.1', '10.0.0.2']: actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] self.add_flow(datapath, 0, match, actions) else: actions = [] self.add_flow(datapath, 0, match, actions) if src_ip and dst_ip: if src_ip.startswith('10.0.0.') and dst_ip.startswith('10.0.0.'): if src_port == 5060 or dst_port == 5060: actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] self.add_flow(datapath, 1, match, actions) elif src_port == 80 or dst_port == 80: actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] self.add_flow(datapath, 2, match, actions) else: actions = [] self.add_flow(datapath, 0, match, actions) else: actions = [] self.add_flow(datapath, 0, match, actions) actions = [] self.add_flow(datapath, 0, match, actions) def configurar_reglas(self): datapath = self.datapaths[0] ofproto = datapath.ofproto parser = datapath.ofproto_parser match = parser.OFPMatch(eth_dst='ff:ff:ff:ff:ff:ff') actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_dst='00:00:00:00:00:01', vlan_id=10) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_dst='00:00:00:00:00:02', vlan_id=20) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_dst='00:00:00:00:00:03', vlan_id=30) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_dst='00:00:00:00:00:01', vlan_id=20) actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_dst='00:00:00:00:00:02', vlan_id=30) actions = [parser.OFPActionOutput(ofproto.OFPORT_ALL)] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=30) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10, ip_proto=6, tcp_dst=5060) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=1, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10, ip_proto=6, tcp_src=5060) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=1, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10, ip_proto=6, tcp_dst=80) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=2, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10, ip_proto=6, tcp_src=80) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=2, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=10, ip_proto=1) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20, ip_proto=6, tcp_dst=5060) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=1, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20, ip_proto=6, tcp_src=5060) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=1, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20, ip_proto=6, tcp_dst=80) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=2, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20, ip_proto=6, tcp_src=80) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=2, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=20, ip_proto=1) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(datapath=datapath, priority=0, match=match, instructions=inst) datapath.send_msg(mod) match = parser.OFPMatch(eth_type=0x0800, vlan_id=30, ip_proto=6, tcp_dst=5060) actions = [] inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)] mod = parser.OFPFlowMod(dat

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