Retreive config file using FTP

Hello everyone,

I have a backup server (Centos) and i need to retreive config file from all my PTP/PMP450i.

(1) I tried FTP, but I cannot find the proper config file. Instead I found "canopy_config.cgi" but the content is empty. Does pulling configs using FTP works?

(2) so, I tried through HTTP. It works if no user and password are set.

(3) When user and password are set on my device, I got an error. Extract below:-

[root@localhost scripts]# wget --user=admin --password='Test123456'
--2018-09-06 11:11:12--
Connecting to connected.
HTTP request sent, awaiting response... 401 <meta http-equiv='Refresh' content="5; URL=main.cgi?mac_esn=0a003ebbbe7b" />Unauthorized <br /> You have timed out of your session, have been locked out due to too many unauthorized access attempts, or have exceeded your maximum allowed sessions. <br/> Please press <a href='index.htm?mac_esn=0a003ebbbe7b'>here</a> to continue
Unknown authentication scheme.
Authorization failed.
[root@localhost scripts]#

Please pay attention this output "Unknown authentication scheme."

Can some experts shed some light here.