You were tasked to configure a Cisco ASA to permit SMTP traffic from hosts in 192.168.88.0/25 to an email server (10.2.2.2). Which of the following access control entries (ACEs) in... You were tasked to configure a Cisco ASA to permit SMTP traffic from hosts in 192.168.88.0/25 to an email server (10.2.2.2). Which of the following access control entries (ACEs) in an ACL will accomplish this task?
Understand the Problem
The question is asking which access control entries (ACEs) in an access control list (ACL) will allow SMTP traffic from a specific subnet to an email server. It presents four options that need evaluation based on network configurations.
Answer
d. access-list SNMP-ACL extended permit tcp 192.168.88.0 255.255.255.128 host 10.2.2.2 eq 25.
The final answer is: d. access-list SNMP-ACL extended permit tcp 192.168.88.0 255.255.255.128 host 10.2.2.2 eq 25.
Answer for screen readers
The final answer is: d. access-list SNMP-ACL extended permit tcp 192.168.88.0 255.255.255.128 host 10.2.2.2 eq 25.
More Information
The subnet mask 255.255.255.128 corresponds to a /25 network, correctly matching the given range.
Tips
A common mistake is to confuse subnet masks or misconfigure port numbers for protocols.
Sources
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