Canon EOS 5D Mark IV Instruction Manual page 155

What to check on the FTP server
Is the FTP server working correctly?

Configure the computer correctly to function as an FTP server.

If applicable, ask your network administrator for the FTP server

address and port number, then enter them on the camera.
Is the power of the FTP server on?

Turn on the FTP server. The server may have been turned off

because of an energy-saving mode.
On the camera, does the FTP server's IP address setting (in

[Address]) match the server's actual address?
Configure the IP address on the camera to match the actual FTP

server address (p.76).
Is a firewall or other security software enabled?

Some security software uses a firewall to restrict access to the FTP

server. Change the firewall settings to allow access to the FTP
server.
 You may be able to access the FTP server by setting [Passive
mode] to [Enable] on the camera (p.128).
Are you connecting to the FTP server via a broadband router?

Some broadband routers use a firewall to restrict access to the

FTP server. Change the firewall settings to allow access to the
FTP server.
You may be able to access the FTP server by setting [Passive

mode] to [Enable] on the camera (p.128).
Responding to Error Messages
155