simnet
Class FilterRouter

java.lang.Object
  java.lang.Thread
      simnet.Node
          simnet.Router
              simnet.FilterRouter

All Implemented Interfaces:

Pluggable, java.lang.Runnable, SimnetWindowListener

public class FilterRouter

extends Router

A router that implements ingress and egress filtering on all inbound links. Note that the ingress/egress filters may be manually removed after a link is added.

Field Summary

static int

FILTER_BASE_RULE The ID to start creating filtering rules at.

Fields inherited from class simnet.Router

fixed_bits

Fields inherited from class simnet.Node

applications, default_plugins_loaded, frame, frozen, id, in_filters, in_links, ipid, isNatted, keep_going, name, natGW, ns, out_filters, out_links, pause, proc, random, resolver, routing_table, running, sim, sleeping, transports, ui, win

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

FilterRouter()

Method Summary

void	addLink(int direction, Link link) Add a link and then add the appropriate filter rules for it (inbound links only).
protected void	filterExternal(int from) Add filter rules for an external node.
protected void	filterInternal(int from) Add filter rules for an internal node.
void	initialize(int node_id, java.lang.String node_name) Initialize like a normal router, and then add filter rules for all existing (inbound) links.

Methods inherited from class simnet.Router

forward, getFixedBits, getNodeClass, setFixedBits

Methods inherited from class simnet.Node

addBPF, addRule, clear, closeWindow, command, command, deleteRule, empty, finalize, getApplication, getHostByName, getLink, getPluginCount, getTitleString, getTransport, getTransport, integrate, isolate, kill, lookup, lookup, out, prePlugout, printout, printout, processWindowCommand, removeBPF, removeLink, run, setupNAT, start, stateful_kill, stateful_start, toString, toString, window

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, stop, stop, suspend, yield

Methods inherited from class java.lang.Object

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

Field Detail

FILTER_BASE_RULE

public static final int FILTER_BASE_RULE

The ID to start creating filtering rules at.

See Also:

Constant Field Values

Constructor Detail

FilterRouter

public FilterRouter()

Method Detail

initialize

public void initialize(int node_id,
                       java.lang.String node_name)

Initialize like a normal router, and then add filter rules for all existing (inbound) links.

Overrides:

initialize in class Router

Parameters:

node_id - ID of new node

node_name - name of new node

addLink

public void addLink(int direction,
                    Link link)

Add a link and then add the appropriate filter rules for it (inbound links only).

Overrides:

addLink in class Node

Parameters:

direction - specifies whether the Link should be added to the incoming link table (Simnet.IN) or the outgoing link table (Simnet.OUT)

link - the Link object to add

filterInternal

protected void filterInternal(int from)

Add filter rules for an internal node.

filterExternal

protected void filterExternal(int from)

Add filter rules for an external node.