How to Implement Intrusion Prevention Systems in OMNeT++

To implement an Intrusion Prevention System (IPS) in OMNeT++ encompasses scheming and act out a system that not simply perceives on the other hand all enthusiastically blocks or moderates malicious doings. An IPS assembles in line using inspection packets, network traffic and construction real-time decisions to permit, block, or alter the traffic. Below is a process to executing an IPS in OMNeT++ by using the INET framework:

Step-by-Step Implementations:

Install OMNeT++ and INET Framework

Make a certain to install the OMNeT++ and the INET Framework.

Create a New OMNeT++ Project

Open OMNeT++ IDE: Start the OMNeT++ IDE.
Create a New Project: Go to File -> New -> OMNeT++ Project. Name the project like IPSSimulation.

Define the Network Topology

To express the network topology involves the IPS node, routers, and hosts to make a new NED file.

Example: IPS Network Topology (IPSNetwork.ned)

package ipsnetwork;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

network IPSNetwork

{

parameters:

@display(“bgb=800,400”);

submodules:

host1: StandardHost {

@display(“p=100,200”);

}

host2: StandardHost {

@display(“p=300,200”);

}

router: Router {

@display(“p=200,100”);

}

ips: StandardHost {

@display(“p=200,300”);

}

connections allowunconnected:

host1.ethg++ <–> Eth10M <–> router.ethg++;

host2.ethg++ <–> Eth10M <–> router.ethg++;

ips.ethg++ <–> Eth10M <–> router.ethg++;

}

Configure the Simulation

For configure the limits of the simulation to build an OMNeT++ initialization file.

Example: Configuration File (omnetpp.ini)

[General]

network = ipsnetwork.IPSNetwork

sim-time-limit = 200s

# Visualization

*.visualizer.canvasVisualizer.displayBackground = true

*.visualizer.canvasVisualizer.displayGrid = true

# Host Configuration

*.host*.numApps = 1

*.host*.app[0].typename = “UdpBasicApp”

*.host*.app[0].destAddresses = “host2”

*.host*.app[0].destPort = 5000

*.host*.app[0].messageLength = 1024B

*.host*.app[0].sendInterval = 1s

# IPS Configuration

*.ips.numApps = 1

*.ips.app[0].typename = “IPSApp”

# IP Address Configuration

*.host1.ipv4.config = xmldoc(“host1.xml”)

*.host2.ipv4.config = xmldoc(“host2.xml”)

*.router.ipv4.config = xmldoc(“router.xml”)

*.ips.ipv4.config = xmldoc(“ips.xml”)

Create IP Address Configuration Files

To stat the IP address to configure for individual node to build a XML files.

Example: IP Configuration File for host1 (host1.xml)

</interface>

</config>

Example: IP Configuration File for host2 (host2.xml)

</interface>

</config>

Example: IP Configuration File for router (router.xml)

</interface>

</interface>

</config>

Example: IP Configuration File for ips (ips.xml)

</interface>

</config>

Implement IPS Logic

To copy the IPS performance, execute an application that screens network traffic for suspicious happenings and blocks or moderates malicious traffic.

Example: IPS Application (Pseudo-Code)

#include <omnetpp.h>

#include <inet/applications/udpapp/UdpBasicApp.h>

#include <unordered_set>

#include <fstream>

using namespace omnetpp;

using namespace inet;

class IPSApp : public UdpBasicApp

{

protected:

std::ofstream logFile;

std::unordered_set<std::string> blockedIPs;

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void monitorTraffic(cMessage *msg);

void logIncident(const std::string &incident);

void detectThreats(cMessage *msg);

void respondToThreat(cMessage *msg);

};

Define_Module(IPSApp);

void IPSApp::initialize(int stage) {

UdpBasicApp::initialize(stage);

if (stage == INITSTAGE_APPLICATION_LAYER) {

logFile.open(“ips_log.txt”);

// Initialize blocked IPs

blockedIPs.insert(“192.168.1.3”); // Example blocked IP

}

void IPSApp::handleMessageWhenUp(cMessage *msg) {

monitorTraffic(msg);

if (blockedIPs.find(msg->getSenderModule()->getFullPath()) == blockedIPs.end()) {

UdpBasicApp::handleMessageWhenUp(msg);

} else {

// Drop the packet if the sender IP is blocked

delete msg;

}

void IPSApp::monitorTraffic(cMessage *msg) {

// Monitor traffic and detect threats

detectThreats(msg);

}

void IPSApp::detectThreats(cMessage *msg) {

// Implement threat detection logic

// Example: detect high traffic volume or specific patterns

if (strcmp(msg->getName(), “udpPacket”) == 0) {

// Analyze the packet content

// If suspicious activity is detected, log the incident and respond to the threat

logIncident(“Suspicious packet detected: ” + std::string(msg->getName()));

respondToThreat(msg);

}

void IPSApp::respondToThreat(cMessage *msg) {

// Implement threat response logic

// Example: block the sender IP or drop the packet

blockedIPs.insert(msg->getSenderModule()->getFullPath());

delete msg; // Example: drop the packet

}

void IPSApp::logIncident(const std::string &incident) {

// Log the incident details to a file

logFile << incident << ” at ” << simTime() << “\n”;

}

Implement Logging and Analysis on Hosts

To record specific events and refer logs to the IPS nodes by the hosts.

Example: Host Application with Logging (Pseudo-Code)

#include <omnetpp.h>

#include <inet/applications/udpapp/UdpBasicApp.h>

#include <fstream>

using namespace omnetpp;

using namespace inet;

class LoggingHostApp : public UdpBasicApp

{

protected:

std::ofstream logFile;

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void logEvent(const std::string &event);

};

Define_Module(LoggingHostApp);

void LoggingHostApp::initialize(int stage) {

UdpBasicApp::initialize(stage);

if (stage == INITSTAGE_APPLICATION_LAYER) {

logFile.open(“host_log.txt”);

}

void LoggingHostApp::handleMessageWhenUp(cMessage *msg) {

// Log specific events

logEvent(“Sending packet: ” + std::string(msg->getName()));

UdpBasicApp::handleMessageWhenUp(msg);

}

void LoggingHostApp::logEvent(const std::string &event) {

// Log the event details to a file

logFile << event << ” at ” << simTime() << “\n”;

}

Run the Simulation

Build the Project: Choose Build Project and right-click on the project.
Run the Simulation: To start the simulations and to pick on the green play button in the OMNeT++ IDE

Over this, we have explore to execute the Intrusion Prevention Systems in OMNeT++ and to learn about network topology, configuration files, implement IPS logics, and some features. We are pleasure to offer in depth details about to implement the Intrusion Prevention Systems in OMNeT++.

Our team of developers is here to assist you with simulating and implementing Intrusion Prevention Systems using the OMNeT++ tool. For more assistance, reach out to omnet-manual.com. We focus on IPS setups that analyze packets, monitor network traffic, and make real-time decisions for your projects, ensuring you get the best explanations possible.