Characters of p2P Traffic Traffic volume grows rapidly Frequently upgrades emergence of new protocols Disquise the traffic to circumvent firewalls legal issues Non-standard proprietary protocols(poor documented) Operate on arbitrary port numbers Support payload encryptionCharacters of P2P Traffic • Traffic volume grows rapidly • Frequently upgrades & emergence of new protocols • Disguise the traffic to circumvent firewalls & legal issues – Non-standard, proprietary protocols (poorly documented) – Operate on arbitrary port numbers – Support payload encryption