Exam 312-50v13 Topic 1 Question 134 Discussion
Actual exam question for ECCouncil's 312-50v13 exam
Question #: 134
Topic #: 1
Question #: 134
Topic #: 1
The security administrator of ABC needs to permit Internet traffic in the host 10.0.0.2 and UDP traffic in the host
10.0.0.3. He also needs to permit all FTP traffic to the rest of the network and deny all other traffic. After he applied his ACL configuration in the router, nobody can access the ftp, and the permitted hosts cannot access the Internet. According to the next configuration, what is happening in the network?
access-list 102 deny tcp any any
access-list 104 permit udp host 10.0.0.3 any
access-list 110 permit tcp host 10.0.0.2 eq www any
access-list 108 permit tcp any eq ftp any
10.0.0.3. He also needs to permit all FTP traffic to the rest of the network and deny all other traffic. After he applied his ACL configuration in the router, nobody can access the ftp, and the permitted hosts cannot access the Internet. According to the next configuration, what is happening in the network?
access-list 102 deny tcp any any
access-list 104 permit udp host 10.0.0.3 any
access-list 110 permit tcp host 10.0.0.2 eq www any
access-list 108 permit tcp any eq ftp any
Suggested Answer: B Vote an answer
https://www.cisco.com/c/en/us/support/docs/ip/access-lists/26448-ACLsamples.html Since the first line prohibits any TCP traffic (access-list 102 deny tcp any any), the lines below will simply be ignored by the router. Below you will find the example from CISCO documentation.
This figure shows that FTP (TCP, port 21) and FTP data (port 20) traffic sourced from NetB destined to NetA is denied, while all other IP traffic is permitted.
Diagram Description automatically generated
FTP uses port 21 and port 20. TCP traffic destined to port 21 and port 20 is denied and everything else is explicitly permitted.
* access-list 102 deny tcp any any eq ftp
* access-list 102 deny tcp any any eq ftp-data
* access-list 102 permit ip any any
This figure shows that FTP (TCP, port 21) and FTP data (port 20) traffic sourced from NetB destined to NetA is denied, while all other IP traffic is permitted.
Diagram Description automatically generated
FTP uses port 21 and port 20. TCP traffic destined to port 21 and port 20 is denied and everything else is explicitly permitted.
* access-list 102 deny tcp any any eq ftp
* access-list 102 deny tcp any any eq ftp-data
* access-list 102 permit ip any any
by Boyd at Jun 15, 2025, 10:52 AM
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