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Which one of the following is aport and protocol combination allowedby theAllow Defaultsetting for Port Lockdown?
Correct Answer: C
Port Lockdown controls which ports and protocols aSelf IPwill respond to. TheAllow Defaultsetting permits only a predefined set of BIG-IP internal and required service ports. The Allow Default listincludes: * TCP 443# HTTPS (Management/TMUI access via Self-IP) * TCP 4353 # CMI (device sync) * TCP/UDP ports related to HA communication * Other essential internal F5 ports Why TCP 443 is correct: * It is one of the officially allowed ports underAllow Default. * It enables HTTPS/TMUI access through a Self IP. Why the other options are incorrect: A). TCP 80 (HTTP) * Not allowed under Allow Default * HTTP via Self-IP is blocked unless placed under Allow Custom B). UDP 8443 * Not an F5 default service * Not part of the Allow Default ports
