netp

Class Ip4PacketFilter

java.lang.Object

SynchronousProcessor

netp.Ip4PacketFilter

public class Ip4PacketFilter
extends SynchronousProcessor

Discards packets from an input trace based on a selection criterion. These criterion are net protocol, source and destination IP, and source and destination port. A packet must satisfy ALL criterion to pass through the filter. At least, it lets only IPv4 packets through, and discards the rest.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ANY_PROTOCOL
static int	ICMP
static int	TCP
static int	UDP

Constructor Summary

Constructors

Constructor and Description
Ip4PacketFilter() Instantiates a default filter that allows all packets through

Method Summary

Modifier and Type	Method and Description
void	addDestinationIp(java.lang.String dst) Adds a destination IP to allow through the filter.
void	addSourceIp(java.lang.String src) Adds a source IP to allow through the filter.
Ip4PacketFilter	clone()
protected boolean	compute(java.lang.Object[] inputs, java.util.Queue<java.lang.Object[]> outputs)
Processor	duplicate(boolean with_state)
void	removeDestinationIp(java.lang.String dst) Remove a destination IP from the filter.
void	removeSourceIp(java.lang.String src) Remove a source IP from the filter.
void	setDestinationPort(int dst) Set the destination port to allow through the filter
void	setDestinationPortRange(int low, int high) Set a range of destination ports to allow through the filter
void	setProtocol(int protocol) Set the protocol to allow through the filter.
void	setSourcePort(int src) Set the source port to allow through the filter
void	setSourcePortRange(int low, int high) Set a range of source ports to allow through the filter

Methods inherited from class java.lang.Object

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

Field Detail

ICMP

public static final int ICMP

See Also:

Constant Field Values

TCP

public static final int TCP

See Also:

Constant Field Values

UDP

public static final int UDP

See Also:

Constant Field Values

ANY_PROTOCOL

public static final int ANY_PROTOCOL

See Also:

Constant Field Values

Constructor Detail

Ip4PacketFilter

public Ip4PacketFilter()

Instantiates a default filter that allows all packets through

Method Detail

addSourceIp

public void addSourceIp(java.lang.String src)

Adds a source IP to allow through the filter. If the IP list is empty, all IPs pass through.

Parameters:

src - IP address in string form (e.g. "192.168.0.1")

removeSourceIp

public void removeSourceIp(java.lang.String src)

Remove a source IP from the filter. If the IP list is empty, all IPs pass through.

Parameters:

src - IP address in string form (e.g. "192.168.0.1")

addDestinationIp

public void addDestinationIp(java.lang.String dst)

Adds a destination IP to allow through the filter. If the IP list is empty, all IPs pass through.

Parameters:

dst - IP address in string form (e.g. "192.168.0.1")

removeDestinationIp

public void removeDestinationIp(java.lang.String dst)

Remove a destination IP from the filter. If the IP list is empty, all IPs pass through.

Parameters:

dst - IP address in string form (e.g. "192.168.0.1")

setProtocol

public void setProtocol(int protocol)

Set the protocol to allow through the filter. The filtered protocol is the one within the IPv4 header.

Parameters:

protocol - the protocol ID, or PacketFilter.ANY_PROTOCOL to allow all protocols

setSourcePort

public void setSourcePort(int src)

Set the source port to allow through the filter

Parameters:

src - the port number

setSourcePortRange

public void setSourcePortRange(int low,
                               int high)

Set a range of source ports to allow through the filter

Parameters:

low - the lower bound of the port range to allow

high - the upper bound of the port range to allow

setDestinationPort

public void setDestinationPort(int dst)

Set the destination port to allow through the filter

Parameters:

dst - the port number

setDestinationPortRange

public void setDestinationPortRange(int low,
                                    int high)

Set a range of destination ports to allow through the filter

Parameters:

low - the lower bound of the port range to allow

high - the upper bound of the port range to allow

compute

protected boolean compute(java.lang.Object[] inputs,
                          java.util.Queue<java.lang.Object[]> outputs)

clone

public Ip4PacketFilter clone()

duplicate

public Processor duplicate(boolean with_state)