// We should not allow requests to the listen port directly. Requests must be
			// sent to some other original port and iptables redirected to 15001. This
			// ensures we do not passthrough back to the listen port.
			DestinationPort: &wrappers.UInt32Value{Value: uint32(push.Mesh.ProxyListenPort)},
		},
		Filters: append(
			buildMetricsNetworkFilters(push, node, istionetworking.ListenerClassSidecarOutbound, nil),
			&listener.Filter{

	match := &listener.FilterChainMatch{}
	match.ApplicationProtocols = opt.ApplicationProtocols
	match.TransportProtocol = opt.TransportProtocol
	if cc.port.TargetPort > 0 {
		match.DestinationPort = &wrappers.UInt32Value{Value: cc.port.TargetPort}
	}
	return match
}

func (lb *ListenerBuilder) buildInboundHBONEListeners() []*listener.Listener {
	routes := []*route.Route{{
		Match: &route.RouteMatch{

func (sim *Simulation) matchFilterChain(chains []*listener.FilterChain, defaultChain *listener.FilterChain,
	input Call, hasTLSInspector bool,
) (*listener.FilterChain, error) {
	chains = filter("DestinationPort", chains, func(fc *listener.FilterChainMatch) bool {
		return fc.GetDestinationPort() == nil
	}, func(fc *listener.FilterChainMatch) bool {
		return int(fc.GetDestinationPort().GetValue()) == input.Port
	})