net.clackrouter.component.extension
Class NAPT

java.lang.Object
  net.clackrouter.component.base.ClackComponent
      net.clackrouter.component.extension.NAPT

All Implemented Interfaces:

Alarm

public class NAPT
extends ClackComponent

VERY basic implementation of NAT. Only handles TCP/UDP for now, no ICMP. Defaults to using the first interface (usually eth0) of the current router as the external IP, and 10.1.1.0/24 as the private network (assumes that it has interfaces in the private networks, so it hears about them from routing).

Nested Class Summary

class	NAPT.ICMPMapping
class	NAPT.TransportLevelMapping

Nested classes/interfaces inherited from class net.clackrouter.component.base.ClackComponent

ClackComponent.Waiter

Field Summary

static int	DEST_PORT
static int	ICMP_MAX_TTL
static int	NUM_PORTS
static int	PORT_IN
static int	PORT_OUT
static int	SRC_PORT
static int	TRANSPORT_MAX_TTL

Fields inherited from class net.clackrouter.component.base.ClackComponent

componentCell, m_has_error, m_log, m_name, m_num_ports, m_packetcount_in, m_packetcount_out, m_ports, mListeners, mRouter, pendingError, SIGNAL_ERROR_LEN_MSEC, UNIQUE_COUNT, view

Constructor Summary

NAPT(Router router, java.lang.String name)

Method Summary

void	acceptPacket(VNSPacket packet, int port_num) The starting point for packet-processing when packets are "pushed" to this component.
java.awt.Color	getColor() The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.
java.util.Hashtable	getICMPMappings()
javax.swing.JPanel	getPropertiesView() Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state.
NAPT.TransportLevelMapping[]	getTransportLevelMappings()
void	notifyAlarm() call-back method implemented by the code setting the alarm.
void	setExternalIPAddress(java.net.InetAddress new_addr)
void	setInternalNetwork(java.net.InetAddress net, java.net.InetAddress mask)
protected void	setupPorts(int numports) Allocates an array of ClackPort objects to be used by this component

Methods inherited from class net.clackrouter.component.base.ClackComponent

createCopy, createInputPullPort, createInputPushPort, createOutputPullPort, createOutputPushPort, error, fireListeners, getComponentCell, getHierarchicalView, getLog, getName, getNumPorts, getPacketCountIn, getPacketCountOut, getPendingError, getPort, getRouter, getSerializableProperties, getTime, getTypeName, getUniqueCount, getView, handlePullRequest, hasError, initializeProperties, isHierarchical, isModifying, log, poll, registerListener, sendOutPort, setAlarm, setComponentCell, setName, setPendingError, setView, showErrorDialog, signalError, try_repaint, unregisterListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PORT_IN

public static final int PORT_IN

See Also:

Constant Field Values

PORT_OUT

public static final int PORT_OUT

See Also:

Constant Field Values

NUM_PORTS

public static final int NUM_PORTS

See Also:

Constant Field Values

DEST_PORT

public static final int DEST_PORT

See Also:

Constant Field Values

SRC_PORT

public static final int SRC_PORT

See Also:

Constant Field Values

TRANSPORT_MAX_TTL

public static int TRANSPORT_MAX_TTL

ICMP_MAX_TTL

public static int ICMP_MAX_TTL

Constructor Detail

NAPT

public NAPT(Router router,
            java.lang.String name)

Method Detail

setupPorts

protected void setupPorts(int numports)

Description copied from class: ClackComponent

Allocates an array of ClackPort objects to be used by this component

Overrides:

setupPorts in class ClackComponent

Parameters:

numports - the number of ports to create

acceptPacket

public void acceptPacket(VNSPacket packet,
                         int port_num)

Description copied from class: ClackComponent

The starting point for packet-processing when packets are "pushed" to this component.

The default implementation warns that the packet is being ignored.

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

port_num - The number of the port that this packet is arriving on

notifyAlarm

public void notifyAlarm()

Description copied from interface: Alarm

call-back method implemented by the code setting the alarm. notifies that the alarm has fired.

Specified by:

notifyAlarm in interface Alarm

Overrides:

notifyAlarm in class ClackComponent

setExternalIPAddress

public void setExternalIPAddress(java.net.InetAddress new_addr)

setInternalNetwork

public void setInternalNetwork(java.net.InetAddress net,
                               java.net.InetAddress mask)

getTransportLevelMappings

public NAPT.TransportLevelMapping[] getTransportLevelMappings()

getICMPMappings

public java.util.Hashtable getICMPMappings()

getPropertiesView

public javax.swing.JPanel getPropertiesView()

Description copied from class: ClackComponent

Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state. This method creates a default property view, and can be overriden to provide custom properties views

Overrides:

getPropertiesView in class ClackComponent

Returns:

this component's property view

getColor

public java.awt.Color getColor()

Description copied from class: ClackComponent

The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.

Other renderers may ignore this value.

Overrides:

getColor in class ClackComponent

Returns:

the rendering color