Which access controls list allows only TCP traffic with a destination port range of 22-433, excluding port 80?
Which access controls list allows only TCP traffic with a destination port range of 22-433, excluding port 80?
A . Deny tcp any any eq 80
Permit tcp any any gt 21 it 444
B . Permit tcp any any ne 80
C . Permit tcp any any range 22 443
Deny tcp any any eq 80
D . Deny tcp any any ne 80
Permit tcp any any range 22 443
Answer: C
Explanation:
Although the statement “permit tcp any any gt … lt …” seems to be correct but in fact it is not. Each ACL statement only supports either “gt” or “lt” but not both:
In fact answer ‘Permit tcp any any range 22 443 Deny tcp any any eq 80 eq 80.
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D would be the best answer if it did not have the typo ne
the deny statement should come before the permit statment other port 80 traffic will be premitted by the 1st ACE