A public health clinic network enables the Generic TTL Security Mechanism (GTSM) on OSPF to harden adjacency formation. What is GTSM’s primary purpose in this design?
Select an answer to reveal the explanation.
Short Explanation
GTSM checks the TTL like a bouncer checking whether you walked over from next door—or somehow mailed yourself from across the Internet. Spoofed remote OSPF sessions struggle when only max-TTL neighbors are welcome. It’s hop-distance hardening, not LSA encryption.
Full Explanation
GTSM (TTL security) for OSPF expects packets with an appropriate TTL from a closely connected peer, mitigating certain remote spoofing attacks against session formation. It does not encrypt LSA payloads, replace cryptographic/authentication keying with RADIUS on hellos, or redefine passive-interface behavior. Clinics use it as an adjacency-hardening control alongside—not instead of—proper authentication and filtering.