Merge pull request #251 from vijayleo31/patch-1

packet defender

packet defender

@@ -0,0 +1,55 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <algorithm>
+
+class Packet {
+public:
+    std::string sourceIP;
+    std::string destinationIP;
+    int port;
+
+    Packet(std::string src, std::string dest, int p) 
+        : sourceIP(src), destinationIP(dest), port(p) {}
+};
+
+class PacketFilter {
+private:
+    std::vector<std::string> blockedIPs;
+
+public:
+    void addBlockedIP(const std::string& ip) {
+        blockedIPs.push_back(ip);
+    }
+
+    bool isBlocked(const Packet& packet) {
+        return std::find(blockedIPs.begin(), blockedIPs.end(), packet.sourceIP) != blockedIPs.end();
+    }
+
+    void processPacket(const Packet& packet) {
+        if (isBlocked(packet)) {
+            std::cout << "Blocked packet from: " << packet.sourceIP << std::endl;
+        } else {
+            std::cout << "Allowed packet from: " << packet.sourceIP << std::endl;
+        }
+    }
+};
+
+int main() {
+    PacketFilter filter;
+    filter.addBlockedIP("192.168.1.10");
+    filter.addBlockedIP("10.0.0.5");
+
+    std::vector<Packet> packets = {
+        Packet("192.168.1.10", "192.168.1.1", 80),
+        Packet("10.0.0.5", "192.168.1.2", 443),
+        Packet("192.168.1.20", "192.168.1.3", 22),
+        Packet("172.16.0.1", "192.168.1.4", 8080)
+    };
+
+    for (const auto& packet : packets) {
+        filter.processPacket(packet);
+    }
+
+    return 0;
+}