Allowing FTPS passive mode traffic – KerioControl Support
Fix FTP active connection issues "Cannot create a data connection: No route to host" on ProFTPD Linux dedicated server - ☩ Walking in Light with Christ - Faith, Computing, Diary
c# - The remote server returned an error: 227 Entering Passive Mode (500 oops vs_utility_recv_peek: no data) - Stack Overflow
solving FTP] windows accessing Linux vsftpd (FTP server) problem 200 switching to ASCII mode, 227 entering passive mode | Develop Paper
RHEL7 FTP server error: ftp: connect: No route to host solution - Linux Tutorials - Learn Linux Configuration
wireshark - FTP disconnects after entering passive mode b/c packets are lost - Super User