package iptables

import "github.com/docker/libnetwork/iptables"

Index ¶

• Constants
• Variables
• func ExistChain(chain string, table Table) bool
• func Exists(table Table, chain string, rule ...string) bool
• func FirewalldInit() error
• func OnReloaded(callback func())
• func Passthrough(ipv IPV, args ...string) ([]byte, error)
• func ProgramChain(c *ChainInfo, bridgeName string, hairpinMode, enable bool) error
• func Raw(args ...string) ([]byte, error)
• func RawCombinedOutput(args ...string) error
• func RemoveExistingChain(name string, table Table) error
• type Action
• type ChainError
• func (e ChainError) Error() string
• type ChainInfo
• func NewChain(name string, table Table, hairpinMode bool) (*ChainInfo, error)
• func (c *ChainInfo) Forward(action Action, ip net.IP, port int, proto, destAddr string, destPort int, bridgeName string) error
• func (c *ChainInfo) Link(action Action, ip1, ip2 net.IP, port int, proto string, bridgeName string) error
• func (c *ChainInfo) Output(action Action, args ...string) error
• func (c *ChainInfo) Prerouting(action Action, args ...string) error
• func (c *ChainInfo) Remove() error
• type Conn
• type IPV
• type Table

Constants ¶

const (
	// Append appends the rule at the end of the chain.
	Append Action = "-A"
	// Delete deletes the rule from the chain.
	Delete Action = "-D"
	// Insert inserts the rule at the top of the chain.
	Insert Action = "-I"
	// Nat table is used for nat translation rules.
	Nat Table = "nat"
	// Filter table is used for filter rules.
	Filter Table = "filter"
	// Mangle table is used for mangling the packet.
	Mangle Table = "mangle"
)

Variables ¶

var (

	// ErrIptablesNotFound is returned when the rule is not found.
	ErrIptablesNotFound = errors.New("Iptables not found")
)

Functions ¶

func ExistChain ¶

func ExistChain(chain string, table Table) bool

ExistChain checks if a chain exists

func Exists ¶

func Exists(table Table, chain string, rule ...string) bool

Exists checks if a rule exists

func FirewalldInit ¶

func FirewalldInit() error

FirewalldInit initializes firewalld management code.

func OnReloaded ¶

func OnReloaded(callback func())

OnReloaded add callback

func Passthrough ¶

func Passthrough(ipv IPV, args ...string) ([]byte, error)

Passthrough method simply passes args through to iptables/ip6tables

func ProgramChain ¶

func ProgramChain(c *ChainInfo, bridgeName string, hairpinMode, enable bool) error

ProgramChain is used to add rules to a chain

func Raw ¶

func Raw(args ...string) ([]byte, error)

Raw calls 'iptables' system command, passing supplied arguments.

func RawCombinedOutput ¶

func RawCombinedOutput(args ...string) error

RawCombinedOutput inernally calls the Raw function and returns a non nil error if Raw returned a non nil error or a non empty output

func RemoveExistingChain ¶

func RemoveExistingChain(name string, table Table) error

RemoveExistingChain removes existing chain from the table.

Types ¶

type Action ¶

type Action string

Action signifies the iptable action.

type ChainError ¶

type ChainError struct {
	Chain  string
	Output []byte
}

ChainError is returned to represent errors during ip table operation.

func (ChainError) Error ¶

func (e ChainError) Error() string

type ChainInfo ¶

type ChainInfo struct {
	Name        string
	Table       Table
	HairpinMode bool
}

ChainInfo defines the iptables chain.

func NewChain ¶

func NewChain(name string, table Table, hairpinMode bool) (*ChainInfo, error)

NewChain adds a new chain to ip table.

func (*ChainInfo) Forward ¶

func (c *ChainInfo) Forward(action Action, ip net.IP, port int, proto, destAddr string, destPort int, bridgeName string) error

Forward adds forwarding rule to 'filter' table and corresponding nat rule to 'nat' table.

func (*ChainInfo) Link ¶

func (c *ChainInfo) Link(action Action, ip1, ip2 net.IP, port int, proto string, bridgeName string) error

Link adds reciprocal ACCEPT rule for two supplied IP addresses. Traffic is allowed from ip1 to ip2 and vice-versa

func (*ChainInfo) Output ¶

func (c *ChainInfo) Output(action Action, args ...string) error

Output adds linking rule to an OUTPUT chain.

func (*ChainInfo) Prerouting ¶

func (c *ChainInfo) Prerouting(action Action, args ...string) error

Prerouting adds linking rule to nat/PREROUTING chain.

func (*ChainInfo) Remove ¶

func (c *ChainInfo) Remove() error

Remove removes the chain.

type Conn ¶

type Conn struct {
	// contains filtered or unexported fields
}

Conn is a connection to firewalld dbus endpoint.

type IPV ¶

type IPV string

IPV defines the table string

const (
	// Iptables point ipv4 table
	Iptables IPV = "ipv4"
	// IP6Tables point to ipv6 table
	IP6Tables IPV = "ipv6"
	// Ebtables point to bridge table
	Ebtables IPV = "eb"
)

type Table ¶

type Table string

Table refers to Nat, Filter or Mangle.

Source Files ¶

firewalld.go iptables.go