When i have connecting sftp in filezilla for upload files into server, it could not be connected, after that check in secure log file in server showing below error,
Apr 1 16:53:42 host proftpd: host.domain.com (192.168.0.1[192.168.0.1]) - USER proftpd (Login failed): Invalid shell: '/bin/false'
find the protpd.conf file, If unable to find the proftpd configure file you can find it by using below command,
Configure : /etc/local/proftpd.conf
Suppose the /bin/false is not listed in your /etc/shells file. For proftpd, it shouldn't even be checking this,
Append following line in proftpd.conf
Restart proftpd to take effect changes we've done..
Note : Check the proftpd status with netstat command.
tcp 0 0 0.0.0.0:11513 0.0.0.0:* LISTEN 14538/proftpd
I hope you have never facing this connection issue.