Problem
Your FTP connection fails to connect and/or you receive a timeout error
Solution
Your connection may be getting blocked by your own or CPR’s firewall or CPR’s access rules.
Your internal firewall may be blocking your connection
Verify that a, if any, local firewall allows outbound traffic in accordance with Hostnames og porte
Please also note that the firewall must be open for outbound traffic in the port interval stated in “passive ports”.
Your IP address may be blocked by geolocation rules
Only source IP-addresses that are resolved to be located in the EU are per default allowed.
Your IP address may be denied access because it is not on CPR’s allowed list (whitelisted)
You can reach the FTP server but are denied access because of an “access rule”. (“denied by access rules”).
Your source IP is likely not on the allowed list. Contact CPR support. Let them know your source IP.
You may be using an unsupported protocol and/or cipher
Supporterede ciphers og protokoller
You successfully login, but then get a timeout
Passive FTP is always used and the FTP servers are set to use a fixed interval of ports.
See Hostnames og porte
On the FTP client-side it must be secured that the firewall is open (outbound) for the interval of ports.
Explanation of FTP active/passive modes: https://en.wikipedia.org/wiki/File_Transfer_Protocol#Communication_and_data_transfer