To implement the Security Information and Event Management (SIEM) system in ns3 we need to encompass to simulate the network then gathers the data, monitors and investigate the security-related events from different network nodes.
This will demonstrate the simple steps to set up the network, generate events, and collect and analyse these events.
Step-by-Step Implementation:
Step 1: Setup ns3 Environment
Make sure ns3 is installed in the system.
Step 2: Include Necessary Modules
Include the necessary ns3 modules in your script:
#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”
#include “ns3/flow-monitor-module.h”
Step 3: Create the Simulation Script
- Setup Nodes and Network:
using namespace ns3;
NS_LOG_COMPONENT_DEFINE (“SIEMSimulation”);
class SIEMApplication : public Application
{
public:
SIEMApplication ();
virtual ~SIEMApplication ();
void Setup (Ptr<Socket> socket, Address address, uint32_t packetSize, uint32_t nPackets, DataRate dataRate);
private:
virtual void StartApplication (void);
virtual void StopApplication (void);
void ScheduleTx (void);
void SendPacket (void);
Ptr<Socket> m_socket;
Address m_peer;
uint32_t m_packetSize;
uint32_t m_nPackets;
DataRate m_dataRate;
EventId m_sendEvent;
bool m_running;
uint32_t m_packetsSent;
};
SIEMApplication::SIEMApplication ()
: m_socket (0),
m_peer (),
m_packetSize (0),
m_nPackets (0),
m_dataRate (0),
m_sendEvent (),
m_running (false),
m_packetsSent (0)
{
}
SIEMApplication::~SIEMApplication ()
{
m_socket = 0;
}
void
SIEMApplication::Setup (Ptr<Socket> socket, Address address, uint32_t packetSize, uint32_t nPackets, DataRate dataRate)
{
m_socket = socket;
m_peer = address;
m_packetSize = packetSize;
m_nPackets = nPackets;
m_dataRate = dataRate;
}
void
SIEMApplication::StartApplication (void)
{
m_running = true;
m_packetsSent = 0;
m_socket->Bind ();
m_socket->Connect (m_peer);
SendPacket ();
}
void
SIEMApplication::StopApplication (void)
{
m_running = false;
if (m_sendEvent.IsRunning ())
{
Simulator::Cancel (m_sendEvent);
}
if (m_socket)
{
m_socket->Close ();
}
}
void
SIEMApplication::SendPacket (void)
{
Ptr<Packet> packet = Create<Packet> (m_packetSize);
m_socket->Send (packet);
if (++m_packetsSent < m_nPackets)
{
ScheduleTx ();
}
}
void
SIEMApplication::ScheduleTx (void)
{
if (m_running)
{
Time tNext (Seconds (m_packetSize * 8 / static_cast<double> (m_dataRate.GetBitRate ())));
m_sendEvent = Simulator::Schedule (tNext, &SIEMApplication::SendPacket, this);
}
}
void LogPacketReceive (Ptr<const Packet> packet, const Address &address)
{
NS_LOG_UNCOND (“Packet received at ” << Simulator::Now ().GetSeconds () << ” from ” << address);
}
int main (int argc, char *argv[])
{
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer nodes;
nodes.Create (4);
// Create point-to-point links
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes.Get (0), nodes.Get (1));
devices = pointToPoint.Install (nodes.Get (1), nodes.Get (2));
devices = pointToPoint.Install (nodes.Get (2), nodes.Get (3));
// Install Internet stack
InternetStackHelper stack;
stack.Install (nodes);
// Assign IP addresses
Ipv4AddressHelper address;
address.SetBase (“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign (devices);
// Set up applications
TypeId tid = TypeId::LookupByName (“ns3::UdpSocketFactory”);
Ptr<Socket> recvSink = Socket::CreateSocket (nodes.Get (3), tid);
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 80);
recvSink->Bind (local);
recvSink->SetRecvCallback (MakeCallback (&LogPacketReceive));
Ptr<Socket> source = Socket::CreateSocket (nodes.Get (0), tid);
InetSocketAddress remote = InetSocketAddress (interfaces.GetAddress (3), 80);
source->Connect (remote);
Ptr<SIEMApplication> app = CreateObject<SIEMApplication> ();
app->Setup (source, remote, 1024, 100, DataRate (“1Mbps”));
nodes.Get (0)->AddApplication (app);
app->SetStartTime (Seconds (1.0));
app->SetStopTime (Seconds (10.0));
// Flow monitor
FlowMonitorHelper flowmon;
Ptr<FlowMonitor> monitor = flowmon.InstallAll ();
Simulator::Stop (Seconds (10.0));
Simulator::Run ();
// Print flow monitor statistics
monitor->SerializeToXmlFile (“flowmon-results.xml”, true, true);
Simulator::Destroy ();
return 0;
}
Step 4: Run the Simulation
Compile and run your simulation script:
./waf configure
./waf build
./waf –run SIEMSimulation
Explanation
- Node Creation: Create nodes representing different devices in the network.
- Point-to-Point Links: Configure point-to-point links between nodes.
- Internet Stack: Install the Internet stack on all nodes.
- IP Configuration: Assign IP addresses to the nodes.
- Applications: Set up a custom SIEM application that sends packets and logs received packets.
- Logging: Implement a function to log packet reception events.
- Flow Monitor: Use the flow monitor to collect traffic data and save it to an XML file.
Advanced SIEM Techniques
- Event Correlation:
Implement event correlation to detect patterns and potential security incidents.
void CorrelateEvents (Ptr<const Packet> packet, const Address &address)
{
// Implement correlation logic here
NS_LOG_UNCOND (“Event correlated at ” << Simulator::Now ().GetSeconds () << ” from ” << address);
}
// In main function
recvSink->SetRecvCallback (MakeCallback (&CorrelateEvents));
- Anomaly Detection:
Implement anomaly detection to identify unusual patterns in network traffic.
void DetectAnomalies (Ptr<const Packet> packet, const Address &address)
{
// Implement anomaly detection logic here
NS_LOG_UNCOND (“Anomaly detected at ” << Simulator::Now ().GetSeconds () << ” from ” << address);
}
// In main function
recvSink->SetRecvCallback (MakeCallback (&DetectAnomalies));
- Real-Time Alerts:
Implement real-time alerts for detected security events.
void SendAlert (std::string message)
{
NS_LOG_UNCOND (“ALERT: ” << message);
}
// In event correlation or anomaly detection functions
SendAlert (“Potential security incident detected.”);
- Log Aggregation:
Aggregate logs from multiple nodes for centralized analysis.
void AggregateLogs (Ptr<const Packet> packet, const Address &address)
{
// Implement log aggregation logic here
NS_LOG_UNCOND (“Log aggregated at ” << Simulator::Now ().GetSeconds () << ” from ” << address);
}
// In main function
recvSink->SetRecvCallback (MakeCallback (&AggregateLogs));
Overall, we had learn and knowledge about SIEM system that were executed in ns3 tool and then we gather the data from various nodes then we analyse the results. We will also offer and deliver the additional information regarding SIEM system.
We conduct comparative analyses in networking and share a range of project topics focused on Security Information and Event Management within ns3 using ns3tool, along with implementation support.