Threat types, access control lists, Layer 2 security, VPNs, AAA and password policies.
39 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a denial of service (DoS) attack?
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An attack that floods a target system with traffic to make its services unavailable to legitimate users.- What is the difference between DoS and DDoS?
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DoS comes from one source, DDoS comes from multiple sources attacking simultaneously.- What is a man-in-the-middle (MITM) attack?
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An attack where the attacker intercepts and alters communication between two parties without their knowledge.- What is phishing?
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A social engineering attack that tricks users into revealing sensitive information by pretending to be a trusted source.- What is malware?
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Malicious software designed to harm, exploit, or compromise a computer system or network.- What is an access control list (ACL)?
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A set of rules that determine which traffic is permitted or denied on a network interface.- What is a standard ACL?
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An ACL that filters traffic based only on source IP address.- What is an extended ACL?
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An ACL that filters traffic based on source IP, destination IP, protocol, and port information.- What does a standard ACL match on?
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Source IP address only.- What does an extended ACL match on?
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Source IP, destination IP, protocol, and port.- What does 'permit' mean in an ACL?
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The traffic matching this rule is allowed to pass.- What does 'deny' mean in an ACL?
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The traffic matching this rule is blocked.- What is a wildcard mask in ACLs?
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A mask where 0 bits must match the IP address and 1 bits can be any value.- What is the implicit deny rule in ACLs?
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An automatic rule at the end of every ACL that denies all traffic not explicitly permitted.- How are ACL rules evaluated?
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From top to bottom, with processing stopping at the first match.
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