Centos 7 Firewalld is disabled by default you can check it's status. But explain me how do you have the client on same machine as server? Both on centos 7 or do you mean you have a VM?
Check your internal network settings if it's a VM.
You can also check if proftpd is running.
Check your internal network settings if it's a VM.
You can also check if proftpd is running.
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