Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET)Network SecurityHard
A company is implementing a new security policy that requires all internal network traffic between different departments to be encrypted and authenticated, even within the same physical network segment. Which of the following network security concepts is best suited to achieve this granular level of secure communication?
- ANetwork Address Translation (NAT)
- BVirtual Local Area Network (VLAN)
- CDemilitarized Zone (DMZ)
- DIP Security (IPsec)
Show answer & explanationAnswer & explanation
Correct answer: D. IP Security (IPsec)
IPsec provides end-to-end encryption and authentication for IP packets, making it ideal for securing traffic between different departments even within the same network segment by establishing secure tunnels or transport modes.
Why the other options are wrong
- A. NAT modifies IP address information in packet headers to hide internal network structures but does not provide encryption or authentication.
- B. VLANs logically segment networks at Layer 2, which can separate traffic but does not inherently provide encryption or authentication for inter-VLAN communication.
- C. A DMZ is a network segment designed to expose public-facing services securely, not to encrypt internal departmental traffic.
IP Security (IPsec)
A suite of protocols for securing Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session.
- Operates at the Network Layer (Layer 3) of the OSI model.
- Provides confidentiality (encryption), integrity (hashing), and authenticity (digital signatures).
- Can be used in Tunnel mode (for VPNs) or Transport mode (for host-to-host encryption).
Memory trick: Securing internal chats is like whispering secrets in a crowded room.