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Can a standard ACL on a Cisco router be used for blocking access to FTP service on a server ?

Question List › Category: Networking › Can a standard ACL on a Cisco router be used for blocking access to FTP service on a server ?
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jully882 author asked 8 years ago
1 Answers
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ethanbrown author answered 8 years ago

Standard ACL’s do not have the capacity to look into transport layer headers. For this an

extended ACL would be required. FTP service works on TCP port 20/21. So an extended

ACL can be used for this purpose.

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