SSF.App.Worm
Class AS

java.lang.Object
  |
  +--SSF.App.Worm.AS

public class AS

extends java.lang.Object

An (abstract representation of an) Autonomous System.

Field Summary

java.util.LinkedList	adjacencyList Adjacencies with other ASs.
int	asNumber AS number.
java.util.LinkedList	borderRouterList List of all border routers in this AS that occur in the network level model.
int	index Index in ASGraph array.
java.util.LinkedList	susceptibleHostList List of all susceptible hosts in this AS that occur in the network level model.
int	triggeredInfections Number of infections that have been triggered in the network level model so far.
WormEpidemicState	wormModel Worm epidemic state in this AS.
WormTrafficState	wormTraffic Worm-induced traffic state in this AS.

Constructor Summary

AS(ASGraph asGraph)

Method Summary

float	getNumScanning() Get number of hosts in this AS that are scanning and whose scans reach the outside.
float	getScanPermeability() Get fraction of scans from outside that will permeate the gateways and reach the inside of the AS.
void	init(int _index) Set index.
void	output() For now: do nothing.
java.lang.String	toString()
void	triggerInfections(int numNewInfections) Signal the network model about new infections in hosts that are modeled at the network level.
void	updateBorderRouters(float scanRatePerRouter) Update the scan rate seen by registered border routers at the network level.

Methods inherited from class java.lang.Object

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

Field Detail

index

public int index

Index in ASGraph array.

asNumber

public int asNumber

AS number.

adjacencyList

public java.util.LinkedList adjacencyList

Adjacencies with other ASs.

susceptibleHostList

public java.util.LinkedList susceptibleHostList

List of all susceptible hosts in this AS that occur in the network level model.

borderRouterList

public java.util.LinkedList borderRouterList

List of all border routers in this AS that occur in the network level model.

triggeredInfections

public int triggeredInfections

Number of infections that have been triggered in the network level model so far.

wormModel

public WormEpidemicState wormModel

Worm epidemic state in this AS.

wormTraffic

public WormTrafficState wormTraffic

Worm-induced traffic state in this AS.

Constructor Detail

AS

public AS(ASGraph asGraph)

Method Detail

init

public void init(int _index)

Set index. (My index in ASGraph array.)

output

public void output()

For now: do nothing.

triggerInfections

public void triggerInfections(int numNewInfections)

Signal the network model about new infections in hosts that are modeled at the network level. Pick hosts at random from the susceptibleHostList in this AS.

updateBorderRouters

public void updateBorderRouters(float scanRatePerRouter)

Update the scan rate seen by registered border routers at the network level.

getNumScanning

public float getNumScanning()

Get number of hosts in this AS that are scanning and whose scans reach the outside. Generally this means the number of infected hosts, unless gateways are blocking scans, in which case it may be less. We make the simplifying assumption that scans will reach the outside if any gateway forwards scans.

getScanPermeability

public float getScanPermeability()

Get fraction of scans from outside that will permeate the gateways and reach the inside of the AS. Generally is 1.0 (all scans), unless some gateways are blocking scans, in which case it may be less. We make the simplifying assumption that traffic is perfectly load-balanced over the gateways, so each gateway carries or blocks an equal fraction of scans.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object