How to Implement Blockchain based IDS in OMNeT++

To implement a Blockchain-based Intrusion Detection System (IDS) in OMNeT++ has includes adding blockchain technology with traditional IDS to improve security and trustworthiness in a network simulation. It will mimic how an IDS can leverage blockchain to protect the detection and reporting of intrusions within a distributed network. Given below is a step-by-step process to implement the Blockchain based IDS in OMNeT++:

Step-by-Step Implementations:

Set Up OMNeT++ Environment:

Install OMNeT++: Make sure we have the new version of OMNeT++ installed.
INET Framework: Install the INET framework, which offers required modules for network simulation.

Understand Blockchain and IDS Integration:

Blockchain Overview: Study how blockchain can be used to make a tamper-proof log of detected intrusions, offering decentralized verification and consensus.
IDS Overview: Know how IDS works to detect malicious activities by observing network traffic and evaluating patterns.

Design the Blockchain Model:

Block Structure:
- Describe an elementary block structure that contains fields like PreviousHash, Data which can be the intrusion report, Timestamp, and Hash.
Blockchain Module:
- Improve a Blockchain module in OMNeT++ that manages the verification, creation, and adding of new blocks.
Consensus Mechanism:
- Execute a consensus mechanism like Proof-of-Work (PoW) or Proof-of-Authority (PoA) to validate and insert blocks to the chain.

Example Blockchain Block Structure in OMNeT++:

struct Block {

string previousHash;

string data;

string timestamp;

string hash;

};

class Blockchain {

public:

vector<Block> chain;

Block createBlock(string data);

bool validateBlock(Block newBlock, Block previousBlock);

void addBlock(Block newBlock);

string calculateHash(string data);

};

Implement the IDS Module:

Intrusion Detection Logic:
- Build up an IDS module that observes network traffic for apprehensive activities. When an intrusion is detected, the IDS makes an alert.
Integration with Blockchain:
- When the IDS detects an intrusion, it makes a block encompassing the intrusion data and attempts to insert it to the blockchain.
- To make sure that the intrusion report is logged in a decentralized and tamper-proof manner by using the blockchain module.

Network Topology and Node Setup:

Network Nodes:
- In the network, set up nodes some of which act as blockchain nodes, while others are even network nodes like clients, servers.
IDS Nodes:
- Set up IDS instances at strategic points in the network like gateways, routers. To each IDS instance will be responsible for watching traffic and interacting with the blockchain.

Example Network Setup in NED:

network BlockchainIDSNetwork {

submodules:

node1: Node;

node2: Node;

ids1: IDS {

parameters:

@display(“p=200,100”);

}

blockchain1: Blockchain {

parameters:

@display(“p=300,100”);

}

blockchain2: Blockchain {

parameters:

@display(“p=400,100”);

}

connections:

node1.out –> ids1.in;

ids1.out –> node2.in;

ids1.out –> blockchain1.in;

blockchain1.out –> blockchain2.in;

}

Implement Consensus Mechanism:

Proof-of-Work (PoW):
- Execute a simple PoW mechanism, before a block is inserted to the blockchain where nodes resolve a computational puzzle.
Block Verification:
- Each blockchain node would freely check the block’s validity before adding it to its local chain.

Example PoW Implementation:

bool Blockchain::validateBlock(Block newBlock, Block previousBlock) {

if (previousBlock.hash != newBlock.previousHash)

return false;

if (calculateHash(newBlock.data) != newBlock.hash)

return false;

return true;

}

Simulate and Analyse:

Run Simulations:
- Implement the simulation to watch how the IDS detects intrusions and logs them on the blockchain.
- Examine the propagation of blocks over the network and the time taken for consensus.
Analyse Performance:
- To measure the performance, concentrating on the blockchain overhead, consensus latency, and detection accuracy.

Testing and Evaluation:

Security Testing:
- Mimic several intrusion scenarios and assess how successfully the IDS detects and reports them using the blockchain.
Robustness Testing:
- Check the robustness of the system versus attacks on the blockchain itself, like attempts to tamper with the chain or disrupt consensus.

Advanced Features:

Scalability: Discover the scalability of the blockchain-IDS system by enlarging the number of nodes and traffic volume.
Dynamic Network Conditions: Experiment the system under dynamic conditions, like nodes joining or leaving the network or changing traffic loads.

Documentation and Reporting:

Document Implementation:
- Generate comprehensive documentation covering the implementation, design, and testing of the blockchain-based IDS.
Reporting:
- Make a report that contains the results of the simulations, the efficiency of the IDS, and the security benefits offered by the blockchain.

Example of Block Creation Logic:

Block Blockchain::createBlock(string data) {

Block newBlock;

newBlock.previousHash = chain.back().hash;

newBlock.data = data;

newBlock.timestamp = getCurrentTimestamp();

newBlock.hash = calculateHash(newBlock.previousHash + newBlock.data + newBlock.timestamp);

return newBlock;

}

Optimization and Future Work:

Consensus Optimization:
- Discover more effective consensus mechanisms such as Proof-of-Stake (PoS) or Delegated Proof-of-Stake (DPoS).
Integration with Other Security Systems:
- Regard as integrating the blockchain-IDS with other security frameworks for a more complete defence mechanism.

The above following details, we had executed the procedure to implement and analyse the Blockchain based IDS using OMNeT++. We will provided complete informations according to your requirements.

To implement a blockchain-based Intrusion Detection System (IDS) in the OMNeT++ tool, we offer excellent guidance as we focus on log tampering, data obfuscation, encryption, and evidence deletion. Feel free to share your project details with us for additional support