Consider the following simple ingress ACL with three rules: Rule 1. If TCP destination port=80 or...

Consider the following simple ingress ACL with three rules: Rule 1. If TCP destination port=80 or TCP destination port=443, then allow connection. Rule 2. If TCP destination port=25 and IP destination address=60.47.3.35, then allow connection. Rule 3. Disallow ALL connections.

Now answer the following questions:

Why is Rule 2 safer than Rule 1?

Which rule in the ACL represents the default behaviour of SPI firewalls for ingress connection-opening attempts?

Given the above ACL, what would the firewall do with an incoming ICMP echo message? (3.5+3+3.5=10 marks)

Expert Solution

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venereology answered 2 years ago

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