A network administrator needs to allow employees to securely upload files to a remote server. Which of the following should be allowed on the firewall?
A. 20
B. 21
C. 22
D. 161
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Shouldn’t the answer be 22 because ssh is an secure connection, File transfer protocol is port number 21, True enough, FTP is for file transfers , yet it is not a secure file transfer, if you want a secure File transfer you would use FTPS ( FTPS is not port 21)