CompTIA A+ 220-1102 Practice Question
What physical device or software application is used to restrict which TCP and UDP ports can be used by a network device?
ACL
Firewall
HUD Token
Port Security
What physical device or software application is used to restrict which TCP and UDP ports can be used by a network device?
ACL
Firewall
HUD Token
Port Security
A Firewall is used to restrict network access. In it's simplest form it will block TCP and UDP ports based on number or protocol, but many modern firewalls include complex algorithms to block unusual traffic, detect possible network attacks and monitor or block traffic based on many other factors.
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