To implement the Insider Threat Management in ns3 encompasses locate in a network model where insider threats can be noticed, logged, and answered. It is classically embraces to build a network among the nodes to expressive internal employees whom may act spitefully, and finding mechanisms to classify the insider threats, sorting, and reply structures.
Step-by-Step Implementation
Step 1: Set Up the ns3 Environment
Make sure ns3 is installed. Else, survey the official connection notes.
Step 2: Define the Network Topology
To show employees, possibly an attacker to make a network topology to involves nodes.
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/applications-module.h”
using namespace ns3;
NS_LOG_COMPONENT_DEFINE (“InsiderThreatManagementExample”);
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer employeeNodes;
employeeNodes.Create (3); // Employee nodes
NodeContainer serverNodes;
serverNodes.Create (2); // Server nodes
NodeContainer attackerNode;
attackerNode.Create (1); // Insider Attacker node
// Create point-to-point links
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“10Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (0), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (1), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (2), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (0), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (1), attackerNode.Get (0))));
// Install Internet stack
InternetStackHelper stack;
stack.Install (employeeNodes);
stack.Install (serverNodes);
stack.Install (attackerNode);
// Assign IP addresses
Ipv4AddressHelper address;
address.SetBase (“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign (devices);
// Create and configure applications…
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
Step 3: Simulate Communication
Among the servers and employees to simulate communication to build applications.
Employee Application:
class EmployeeApplication : public Application {
public:
EmployeeApplication () : m_socket (0) {}
virtual ~EmployeeApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 8080);
m_socket->Bind (local);
m_socket->SetRecvCallback (MakeCallback (&EmployeeApplication::HandleRead, this));
Simulator::Schedule (Seconds (2.0), &EmployeeApplication::SendData, this);
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void SendData () {
Ptr<Packet> packet = Create<Packet> ((uint8_t*)”employee-data”, 13);
m_socket->SendTo (packet, 0, InetSocketAddress (Ipv4Address (“10.1.1.1”), 8080)); // Send to server
Simulator::Schedule (Seconds (5.0), &EmployeeApplication::SendData, this);
}
void HandleRead (Ptr<Socket> socket) {
Ptr<Packet> packet;
Address from;
while ((packet = socket->RecvFrom (from))) {
NS_LOG_INFO (“Employee received: ” << packet->GetSize ());
}
}
Ptr<Socket> m_socket;
};
Server Application:
class ServerApplication : public Application {
public:
ServerApplication () : m_socket (0) {}
virtual ~ServerApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 8080);
m_socket->Bind (local);
m_socket->SetRecvCallback (MakeCallback (&ServerApplication::HandleRead, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRead (Ptr<Socket> socket) {
Ptr<Packet> packet;
Address from;
while ((packet = socket->RecvFrom (from))) {
NS_LOG_INFO (“Server received: ” << packet->GetSize ());
// Process data and respond if necessary
std::string responseData = “processed-data”;
Ptr<Packet> responsePacket = Create<Packet> ((uint8_t*)responseData.c_str (), responseData.size ());
m_socket->SendTo (responsePacket, 0, InetSocketAddress::ConvertFrom (from));
}
}
Ptr<Socket> m_socket;
};
Step 4: Implement Insider Threat Management Components
Logging
For log security incidents we make a logging mechanism.
class LoggingApplication : public Application {
public:
LoggingApplication () : m_socket (0) {}
virtual ~LoggingApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 9090);
m_socket->Bind (local);
m_socket->SetRecvCallback (MakeCallback (&LoggingApplication::HandleRead, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRead (Ptr<Socket> socket) {
Ptr<Packet> packet;
Address from;
while ((packet = socket->RecvFrom (from))) {
NS_LOG_INFO (“Log entry: ” << packet->GetSize () << ” bytes from ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
}
}
Ptr<Socket> m_socket;
};
Intrusion Detection System (IDS)
To detect and log security cases.
class IDSApplication : public Application {
public:
IDSApplication () : m_socket (0) {}
virtual ~IDSApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 5050);
m_socket->Bind (local);
m_socket->SetRecvCallback (MakeCallback (&IDSApplication::HandleRead, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRead (Ptr<Socket> socket) {
Ptr<Packet> packet;
Address from;
while ((packet = socket->RecvFrom (from))) {
std::string data = std::string ((char*) packet->PeekData ());
if (DetectIntrusion (data)) {
NS_LOG_WARN (“Intrusion detected from ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
LogIncident (data, InetSocketAddress::ConvertFrom (from).GetIpv4 ());
} else {
NS_LOG_INFO (“Normal traffic from ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
}
}
}
bool DetectIntrusion (const std::string& data) {
// Simplified intrusion detection logic
return data == “malicious-pattern”;
}
void LogIncident (const std::string& data, Ipv4Address sourceIp) {
Ptr<Socket> logSocket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress remote = InetSocketAddress (Ipv4Address (“10.1.1.2”), 9090); // Logging server IP
logSocket->Connect (remote);
std::string logEntry = “Intrusion detected from ” + sourceIp.ToString () + ” with data: ” + data;
Ptr<Packet> logPacket = Create<Packet> ((uint8_t*)logEntry.c_str (), logEntry.size ());
logSocket->Send (logPacket);
logSocket->Close ();
}
Ptr<Socket> m_socket;
};
Response
To switch security incidents we build a reply mechanism.
class ResponseApplication : public Application {
public:
ResponseApplication () : m_socket (0) {}
virtual ~ResponseApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 6060);
m_socket->Bind (local);
m_socket->SetRecvCallback (MakeCallback (&ResponseApplication::HandleRead, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRead (Ptr<Socket> socket) {
Ptr<Packet> packet;
Address from;
while ((packet = socket->RecvFrom (from))) {
NS_LOG_INFO (“Response to incident from ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
// Perform response action, such as notifying admin or blocking IP
}
}
Ptr<Socket> m_socket;
};
Step 5: Deploy Applications
To deploy and instantiate and deploy the applications on the suitable nodes in the network:
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer employeeNodes;
employeeNodes.Create (3); // Employee nodes
NodeContainer serverNodes;
serverNodes.Create (2); // Server nodes
NodeContainer attackerNode;
attackerNode.Create (1); // Insider Attacker node
NodeContainer loggingNode;
loggingNode.Create (1); // Logging node
NodeContainer responseNode;
responseNode.Create (1); // Response node
// Create point-to-point links
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“10Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (0), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (1), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (2), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (0), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (1), attackerNode.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (1), loggingNode.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (loggingNode.Get (0), responseNode.Get (0))));
// Install Internet stack
InternetStackHelper stack;
stack.Install (employeeNodes);
stack.Install (serverNodes);
stack.Install (attackerNode);
stack.Install (loggingNode);
stack.Install (responseNode);
// Assign IP addresses
Ipv4AddressHelper address;
address.SetBase (“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign (devices);
// Create and configure the Employee application
for (uint32_t i = 0; i < employeeNodes.GetN (); ++i) {
Ptr<EmployeeApplication> empApp = CreateObject<EmployeeApplication> ();
employeeNodes.Get (i)->AddApplication (empApp);
empApp->SetStartTime (Seconds (1.0));
empApp->SetStopTime (Seconds (20.0));
}
// Create and configure the Server application
for (uint32_t i = 0; i < serverNodes.GetN (); ++i) {
Ptr<ServerApplication> serverApp = CreateObject<ServerApplication> ();
serverNodes.Get (i)->AddApplication (serverApp);
serverApp->SetStartTime (Seconds (1.0));
serverApp->SetStopTime (Seconds (20.0));
}
// Create and configure the IDS application
Ptr<IDSApplication> idsApp = CreateObject<IDSApplication> ();
serverNodes.Get (1)->AddApplication (idsApp);
idsApp->SetStartTime (Seconds (1.0));
idsApp->SetStopTime (Seconds (20.0));
// Create and configure the Logging application
Ptr<LoggingApplication> logApp = CreateObject<LoggingApplication> ();
loggingNode.Get (0)->AddApplication (logApp);
logApp->SetStartTime (Seconds (1.0));
logApp->SetStopTime (Seconds (20.0));
// Create and configure the Response application
Ptr<ResponseApplication> responseApp = CreateObject<ResponseApplication> ();
responseNode.Get (0)->AddApplication (responseApp);
responseApp->SetStartTime (Seconds (1.0));
responseApp->SetStopTime (Seconds (20.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
Step 6: Simulate an Attack
From the attacker node to assessment the security mechanisms.
class AttackerApplication : public Application {
public:
AttackerApplication () : m_socket (0) {}
virtual ~AttackerApplication () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), UdpSocketFactory::GetTypeId ());
m_peer = InetSocketAddress (Ipv4Address (“10.1.1.1”), 8080); // Target server
m_socket->Connect (m_peer);
Simulator::Schedule (Seconds (3.0), &AttackerApplication::SendMaliciousPacket, this);
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void SendMaliciousPacket () {
std::string maliciousData = “malicious-pattern”; // Simplified malicious pattern
Ptr<Packet> packet = Create<Packet> ((uint8_t*)maliciousData.c_str (), maliciousData.size ());
m_socket->Send (packet);
}
Ptr<Socket> m_socket;
Address m_peer;
};
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer employeeNodes;
employeeNodes.Create (3); // Employee nodes
NodeContainer serverNodes;
serverNodes.Create (2); // Server nodes
NodeContainer attackerNode;
attackerNode.Create (1); // Insider Attacker node
NodeContainer loggingNode;
loggingNode.Create (1); // Logging node
NodeContainer responseNode;
responseNode.Create (1); // Response node
// Create point-to-point links
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“10Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (0), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (1), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (employeeNodes.Get (2), serverNodes.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (0), serverNodes.Get (1))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (1), attackerNode.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (serverNodes.Get (1), loggingNode.Get (0))));
devices.Add (pointToPoint.Install (NodeContainer (loggingNode.Get (0), responseNode.Get (0))));
// Install Internet stack
InternetStackHelper stack;
stack.Install (employeeNodes);
stack.Install (serverNodes);
stack.Install (attackerNode);
stack.Install (loggingNode);
stack.Install (responseNode);
// Assign IP addresses
Ipv4AddressHelper address;
address.SetBase (“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign (devices);
// Create and configure the Employee application
for (uint32_t i = 0; i < employeeNodes.GetN (); ++i) {
Ptr<EmployeeApplication> empApp = CreateObject<EmployeeApplication> ();
employeeNodes.Get (i)->AddApplication (empApp);
empApp->SetStartTime (Seconds (1.0));
empApp->SetStopTime (Seconds (20.0));
}
// Create and configure the Server application
for (uint32_t i = 0; i < serverNodes.GetN (); ++i) {
Ptr<ServerApplication> serverApp = CreateObject<ServerApplication> ();
serverNodes.Get (i)->AddApplication (serverApp);
serverApp->SetStartTime (Seconds (1.0));
serverApp->SetStopTime (Seconds (20.0));
}
// Create and configure the IDS application
Ptr<IDSApplication> idsApp = CreateObject<IDSApplication> ();
serverNodes.Get (1)->AddApplication (idsApp);
idsApp->SetStartTime (Seconds (1.0));
idsApp->SetStopTime (Seconds (20.0));
// Create and configure the Logging application
Ptr<LoggingApplication> logApp = CreateObject<LoggingApplication> ();
loggingNode.Get (0)->AddApplication (logApp);
logApp->SetStartTime (Seconds (1.0));
logApp->SetStopTime (Seconds (20.0));
// Create and configure the Response application
Ptr<ResponseApplication> responseApp = CreateObject<ResponseApplication> ();
responseNode.Get (0)->AddApplication (responseApp);
responseApp->SetStartTime (Seconds (1.0));
responseApp->SetStopTime (Seconds (20.0));
// Create and configure the Attacker application
Ptr<AttackerApplication> attackerApp = CreateObject<AttackerApplication> ();
attackerNode.Get (0)->AddApplication (attackerApp);
attackerApp->SetStartTime (Seconds (3.0));
attackerApp->SetStopTime (Seconds (4.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
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