Hi,
Just to clarify its firewalld on the client server (Rocky), not firewalld on the mediation FTP server blocking the connection?
If so, does the issue persist after issuing:
echo 1 > /proc/sys/net/netfilter/nf_conntrack_helper
Also:
If you can ssh to server, you can use SFTP:
https://camel.apache.org/components/3.16.x/sftp-component.html
Thanks Tom.