To implement the Zero Trust Security model in ns3 has needs to make sure that no entity is internal or external the network is trusted by default. Each and every access request is validated regardless the origin. To execute the ns3 we need to emulate the core principles of Zero Trust Security: continuous authentication, least privilege access, and strict access controls. Here, we provide the detailed guide to implement the Zero Trust Security in ns3:
Step-by-Step Implementation
Step 1: Set Up the ns3 Environment
Make sure ns3 is installed in the system.
Step 2: Define the Network Topology
Generate a network topology that will include multiple nodes, links, and their configurations:
#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 (“ZeroTrustExample”);
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer nodes;
nodes.Create (4);
// Create point-to-point link
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
// 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);
// Create and configure applications…
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
Step 3: Implement Authentication and Access Control
Generate applications that manage continuous authentication and strict access control. This sample uses a basic design to validate the concepts:
class AuthServer : public Application {
public:
AuthServer () {}
virtual ~AuthServer () {}
void AuthenticateAndAuthorize (Ptr<Socket> socket, Address from, std::string credentials) {
// Authentication logic
if (credentials == “valid-credentials”) {
NS_LOG_INFO (“Authentication successful for ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
Authorize (from);
} else {
NS_LOG_INFO (“Authentication failed for ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
}
}
void Authorize (Address from) {
// Authorization logic based on least privilege
std::string ip = InetSocketAddress::ConvertFrom (from).GetIpv4 ().ToString ();
if (ip == “10.1.1.2”) { // Example IP-based authorization
NS_LOG_INFO (“Authorization successful for ” << ip);
AllowAccess (from);
} else {
NS_LOG_INFO (“Authorization failed for ” << ip);
}
}
void AllowAccess (Address from) {
// Logic to allow access to specific resources
NS_LOG_INFO (“Access granted to ” << InetSocketAddress::ConvertFrom (from).GetIpv4 ());
}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), TcpSocketFactory::GetTypeId ());
m_socket->Bind ();
m_socket->Listen ();
m_socket->SetRecvCallback (MakeCallback (&AuthServer::HandleRequest, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRequest (Ptr<Socket> socket) {
Address from;
Ptr<Packet> packet = socket->RecvFrom (from);
std::string credentials = std::string ((char*)packet->PeekData ());
AuthenticateAndAuthorize (socket, from, credentials);
}
Ptr<Socket> m_socket;
};
Step 4: Implement the Client Application
Simulate clients requesting authentication and authorization:
class AuthClient : public Application {
public:
AuthClient () : m_socket (0) {}
virtual ~AuthClient () {}
void RequestAuthentication (std::string credentials) {
Ptr<Packet> packet = Create<Packet> ((uint8_t*)credentials.c_str (), credentials.size ());
m_socket->Send (packet);
}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), TcpSocketFactory::GetTypeId ());
m_socket->Connect (InetSocketAddress (Ipv4Address (“10.1.1.1”), 9)); // AuthServer IP and port
Simulator::Schedule (Seconds (2.0), &AuthClient::RequestAuthentication, this, “valid-credentials”);
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
Ptr<Socket> m_socket;
};
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer nodes;
nodes.Create (4);
// Create point-to-point link
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
// 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);
// Create and configure the AuthServer application
Ptr<AuthServer> authServer = CreateObject<AuthServer> ();
nodes.Get (0)->AddApplication (authServer);
authServer->SetStartTime (Seconds (1.0));
authServer->SetStopTime (Seconds (10.0));
// Create and configure the AuthClient application
Ptr<AuthClient> authClient = CreateObject<AuthClient> ();
nodes.Get (1)->AddApplication (authClient);
authClient->SetStartTime (Seconds (2.0));
authClient->SetStopTime (Seconds (10.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
Step 5: Implement Continuous Monitoring and Logging
Add functionality for continuous monitoring and logging to make sure every access is verified continuously:
class Monitor : public Application {
public:
Monitor () : m_socket (0) {}
virtual ~Monitor () {}
protected:
virtual void StartApplication () {
m_socket = Socket::CreateSocket (GetNode (), TcpSocketFactory::GetTypeId ());
m_socket->Bind ();
m_socket->Listen ();
m_socket->SetRecvCallback (MakeCallback (&Monitor::HandleRequest, this));
}
virtual void StopApplication () {
if (m_socket) {
m_socket->Close ();
m_socket = 0;
}
}
private:
void HandleRequest (Ptr<Socket> socket) {
Address from;
Ptr<Packet> packet = socket->RecvFrom (from);
std::string data = std::string ((char*)packet->PeekData ());
NS_LOG_INFO (“Monitoring packet from ” << InetSocketAddress::ConvertFrom (from).GetIpv4 () << “: ” << data);
// Add logic to verify and log packet data
}
Ptr<Socket> m_socket;
};
int main (int argc, char *argv[]) {
CommandLine cmd;
cmd.Parse (argc, argv);
// Create nodes
NodeContainer nodes;
nodes.Create (4);
// Create point-to-point link
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
// 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);
// Create and configure the AuthServer application
Ptr<AuthServer> authServer = CreateObject<AuthServer> ();
nodes.Get (0)->AddApplication (authServer);
authServer->SetStartTime (Seconds (1.0));
authServer->SetStopTime (Seconds (10.0));
// Create and configure the AuthClient application
Ptr<AuthClient> authClient = CreateObject<AuthClient> ();
nodes.Get (1)->AddApplication (authClient);
authClient->SetStartTime (Seconds (2.0));
authClient->SetStopTime (Seconds (10.0));
// Create and configure the Monitor application
Ptr<Monitor> monitor = CreateObject<Monitor> ();
nodes.Get (2)->AddApplication (monitor);
monitor->SetStartTime (Seconds (1.0));
monitor->SetStopTime (Seconds (10.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
In this script, we understood the concept of zero trust security and their implementation process to execute in the ns3 tool and then we also deliver the additional valuable insights regarding the zero trust security. We’re help you set up Zero Trust Security in the ns3 program! We’ll give you a full rundown with easy-to-understand explanations. If you share your project details with us, we can offer even more support. To make your project a success, we focus on the key principles of Zero Trust Security: ongoing authentication, minimal access rights, and tight control over who gets in, plus some thesis ideas to get you started.
