How to Implement Network Multi Factor Authentication in OMNeT++
To implement the Multi-Factor Authentication (MFA) in OMNeT++ includes making a simulation situation where network nodes essential to validate using numerous factors before getting access to the network or particular resources. MFA usually encompasses something the user knows like a password, something the user has like a token or a mobile device, and something the user is such as a biometric verification.
Steps to Implement Network Multi-Factor Authentication in OMNeT++
- Define the Network Environment:
- Set up a network that contains nodes like workstations, servers, and an Authentication Server that manages multi-factor authentication.
simple WorkstationModule
{
parameters:
@display(“i=block/pc”);
gates:
inout ethg;
}
simple ServerModule
{
parameters:
@display(“i=block/server”);
gates:
inout ethg;
}
simple AuthServerModule
{
parameters:
@display(“i=block/key”);
gates:
inout ethg;
}
network MFANetwork
{
submodules:
workstation: WorkstationModule;
server: ServerModule;
authServer: AuthServerModule;
switch: EthernetSwitch;
connections:
workstation.ethg <–> switch.ethg[0];
server.ethg <–> switch.ethg[1];
switch.ethg[2] –> authServer.ethg;
}
- Implement Authentication Request from Nodes:
- Every node that wants to approach the network must send an authentication request to the Authentication Server. The request should contain various factors like a password, a token code, or biometric data.
class WorkstationModule : public cSimpleModule {
private:
bool authenticated = false;
protected:
virtual void initialize() override {
scheduleAt(simTime() + par(“authStartTime”), new cMessage(“sendAuthRequest”));
}
virtual void handleMessage(cMessage *msg) override {
if (strcmp(msg->getName(), “sendAuthRequest”) == 0) {
sendAuthRequest();
} else if (strcmp(msg->getName(), “authResponse”) == 0) {
processAuthResponse(check_and_cast<cPacket*>(msg));
} else {
cPacket *pkt = check_and_cast<cPacket*>(msg);
processPacket(pkt);
delete pkt;
}
}
void sendAuthRequest() {
// Send an authentication request with multiple factors
cPacket *authReq = new cPacket(“AuthRequest”);
authReq->addPar(“username”) = “user1”;
authReq->addPar(“password”) = “password123”;
authReq->addPar(“token”) = “token123”; // Example token code
authReq->addPar(“biometric”) = “biometricData”; // Example biometric data
send(authReq, “ethg$o”);
EV << “Multi-factor authentication request sent to the authentication server” << endl;
}
void processAuthResponse(cPacket *pkt) {
authenticated = pkt->par(“authenticated”).boolValue();
if (authenticated) {
EV << “Authentication successful” << endl;
} else {
EV << “Authentication failed” << endl;
}
}
void processPacket(cPacket *pkt) {
if (authenticated) {
EV << “Packet received: ” << pkt->getName() << endl;
} else {
EV << “Packet dropped (not authenticated)” << endl;
delete pkt;
}
}
};
- Implement the Authentication Server Logic:
- The Authentication Server obtains the authentication request, confirms each factor, and transfers a response back to the node representing whether the authentication was effective.
class AuthServerModule : public cSimpleModule {
protected:
virtual void handleMessage(cMessage *msg) override {
cPacket *pkt = check_and_cast<cPacket*>(msg);
if (strcmp(pkt->getName(), “AuthRequest”) == 0) {
processAuthRequest(pkt);
}
delete pkt;
}
void processAuthRequest(cPacket *pkt) {
std::string username = pkt->par(“username”).stdstringValue();
std::string password = pkt->par(“password”).stdstringValue();
std::string token = pkt->par(“token”).stdstringValue();
std::string biometric = pkt->par(“biometric”).stdstringValue();
// Example multi-factor authentication logic
bool authenticated = (username == “user1” && password == “password123” &&
token == “token123” && biometric == “biometricData”);
// Send an authentication response back to the node
cPacket *authResp = new cPacket(“AuthResponse”);
authResp->addPar(“authenticated”) = authenticated;
send(authResp, “ethg$o”);
EV << “Authentication response sent: ” << (authenticated ? “Granted” : “Denied”) << endl;
}
};
- Handle Post-Authentication Communication:
- Once a node is authenticated, it can send and receive packets generally. If the authentication fails, the node would be without access to the network or its packets should be dropped.
class ServerModule : public cSimpleModule {
private:
bool authorized = false;
protected:
virtual void handleMessage(cMessage *msg) override {
cPacket *pkt = check_and_cast<cPacket*>(msg);
if (strcmp(pkt->getName(), “AuthResponse”) == 0) {
authorized = pkt->par(“authenticated”).boolValue();
if (authorized) {
EV << “Access granted to the server” << endl;
} else {
EV << “Access denied to the server” << endl;
}
} else if (authorized) {
processRequest(pkt);
} else {
EV << “Unauthorized access attempt blocked” << endl;
delete pkt;
}
}
void processRequest(cPacket *pkt) {
EV << “Processing request: ” << pkt->getName() << endl;
delete pkt;
}
};
- Simulate and Evaluate Multi-Factor Authentication:
- Run simulations to calculate how efficiently the MFA process works. Experiment setups could contain valid authentication attempts, invalid credentials, tries to bypass one or more factors, and the system’s response to failed validations.
virtual void finish() override {
// Collect and record metrics about the MFA process, such as the number of successful and failed authentications.
}
Example Scenario: Multi-Factor Authentication for Secure Access
In a usual situation, a workstation tries to validate with an authentication server using numerous factors. Upon successful authentication, the workstation is allowed access to network resources, like a server. If any of the factors flop, the workstation is prevented access.
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