How to Implement Network Node Authentication in OMNeT++
To implement the network node authentication in OMNeT++ has encompasses generating a simulation where nodes in a network authenticate themselves previously they are permitted to communicate with other nodes or approach network resources. This can be especially useful in setups like distributed systems, IoT networks, and secure communications where make sure the authenticity of nodes is critical. To get ideal implementation support you can rely on our team by sharing with us all your requirements.
Steps to Implement Network Node Authentication in OMNeT++
- Define the Network Environment:
- Describe a network that contains numerous nodes like workstations, servers, and an authentication server that manages the authentication process.
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 AuthenticationNetwork
{
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:
- Each node that wants to access the network must first transfer an authentication request to the authentication server. This request can contain credentials like a username/password or a certificate.
class WorkstationModule : public cSimpleModule {
private:
bool authenticated = false;
protected:
virtual void initialize() override {
// Start the authentication process
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 to the authentication server
cPacket *authReq = new cPacket(“AuthRequest”);
authReq->addPar(“username”) = “user1”; // Example credentials
authReq->addPar(“password”) = “password123”;
send(authReq, “ethg$o”);
EV << “Authentication request sent to the authentication server” << endl;
}
void processAuthResponse(cPacket *pkt) {
authenticated = pkt->par(“authenticated”).boolValue();
if (authenticated) {
EV << “Authentication successful” << endl;
} else {
EV << “Authentication failed” << endl;
}
}
void processPacket(cPacket *pkt) {
if (authenticated) {
EV << “Packet received: ” << pkt->getName() << endl;
} else {
EV << “Packet dropped (not authenticated)” << endl;
delete pkt;
}
}
};
- Implement the Authentication Server Logic:
- The authentication server takes the authentication request, confirms the credentials, and then sends a response back to the node representing whether the authentication was effective or not.
class AuthServerModule : public cSimpleModule {
protected:
virtual void handleMessage(cMessage *msg) override {
cPacket *pkt = check_and_cast<cPacket*>(msg);
if (strcmp(pkt->getName(), “AuthRequest”) == 0) {
processAuthRequest(pkt);
}
delete pkt;
}
void processAuthRequest(cPacket *pkt) {
std::string username = pkt->par(“username”).stdstringValue();
std::string password = pkt->par(“password”).stdstringValue();
// Example authentication logic
bool authenticated = (username == “user1” && password == “password123”);
// Send an authentication response back to the node
cPacket *authResp = new cPacket(“AuthResponse”);
authResp->addPar(“authenticated”) = authenticated;
send(authResp, “ethg$o”);
EV << “Authentication response sent: ” << (authenticated ? “Granted” : “Denied”) << endl;
}
};
- Handle Post-Authentication Communication:
- When a node is authenticated, it can send and receive packets typically. If a node is not authenticated, it should 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 the Authentication Process:
- Run simulations to assess how successfully the authentication process works. Investigation setups might contain valid authentication attempts, invalid credentials, and attempts to bypass the authentication process.
virtual void finish() override {
// Collect and record metrics about the authentication process, such as the number of successful and failed authentications.
}
Example Scenario: Authenticated Access to Network Resources
In a usual situation, a workstation tries to authenticate with an authentication server. Upon effective authentication, the workstation is allowed access to network resources, like a server. If the authentication be unsuccessful, the workstation is denied access.
Throughout this process, we had learned and gain ideas that how successful execute the Network Node Authentication using in OMNeT++. Comprehensive informations will be provided as per your needs.