Beispiel #1
0
func SetupIptables(fw *firewalld.Interface, clusterNetworkCIDR string) error {
	if fw.IsRunning() {
		rules := []FirewallRule{
			{firewalld.IPv4, "nat", "POSTROUTING", 0, []string{"-s", clusterNetworkCIDR, "!", "-d", clusterNetworkCIDR, "-j", "MASQUERADE"}},
			{firewalld.IPv4, "filter", "INPUT", 0, []string{"-p", "udp", "-m", "multiport", "--dports", "4789", "-m", "comment", "--comment", "001 vxlan incoming", "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "INPUT", 0, []string{"-i", "tun0", "-m", "comment", "--comment", "traffic from docker for internet", "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "FORWARD", 0, []string{"-d", clusterNetworkCIDR, "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "FORWARD", 0, []string{"-s", clusterNetworkCIDR, "-j", "ACCEPT"}},
		}

		for _, rule := range rules {
			err := fw.EnsureRule(rule.ipv, rule.table, rule.chain, rule.priority, rule.args)
			if err != nil {
				return err
			}
		}
	} else {
		dbus := utildbus.New()
		ipt := iptables.New(kexec.New(), dbus, iptables.ProtocolIpv4)

		_, err := ipt.EnsureRule(iptables.Append, iptables.TableNAT, iptables.ChainPostrouting, "-s", clusterNetworkCIDR, "!", "-d", clusterNetworkCIDR, "-j", "MASQUERADE")
		if err != nil {
			return err
		}
	}

	return nil
}
Beispiel #2
0
func (c *FlowController) SetupIptables(fw *firewalld.Interface, containerNetwork string) error {
	if fw.IsRunning() {
		rules := []FirewallRule{
			{firewalld.IPv4, "nat", "POSTROUTING", 0, []string{"-s", containerNetwork, "!", "-d", containerNetwork, "-j", "MASQUERADE"}},
			{firewalld.IPv4, "filter", "INPUT", 0, []string{"-p", "udp", "-m", "multiport", "--dports", "4789", "-m", "comment", "--comment", "001 vxlan incoming", "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "INPUT", 0, []string{"-i", "tun0", "-m", "comment", "--comment", "traffic from docker for internet", "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "FORWARD", 0, []string{"-d", containerNetwork, "-j", "ACCEPT"}},
			{firewalld.IPv4, "filter", "FORWARD", 0, []string{"-s", containerNetwork, "-j", "ACCEPT"}},
		}

		for _, rule := range rules {
			err := fw.EnsureRule(rule.ipv, rule.table, rule.chain, rule.priority, rule.args)
			if err != nil {
				return err
			}
		}
	} else {
		exec.Command("iptables", "-t", "nat", "-D", "POSTROUTING", "-s", containerNetwork, "!", "-d", containerNetwork, "-j", "MASQUERADE").Run()
		err := exec.Command("iptables", "-t", "nat", "-A", "POSTROUTING", "-s", containerNetwork, "!", "-d", containerNetwork, "-j", "MASQUERADE").Run()
		if err != nil {
			return err
		}
	}

	return nil
}