Connected to FTP but listing files/folders fails on VPS with firewall
August 6th, 2008
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If you connect to FTP and can not list files/folders and you are using csf / config server firewall, It is probably becuase your vps does have support ip_nat_ftp module, and even it maybe becuase ip_nat_ftp not loaded into hardware node kernel. (if you have access to HN and restarted HN, it may not load automatically into kernel).
Just do
# modprobe ip_nat_ftp
then restart vps (or all vps’s with command service vz restart)
You’re done 
Categories: Linux | CentOS, OpenVZ, Server, Virtuozzo, cPanel csf ftp issue, csf ip_nat_ftp, modprobe ip_nat_ftp