Secure FTP Failed

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Hello,

I am trying to copy the files from one network to a different network segment. It starts the session fine, and then it fails. The firewall logs shows that the firewall blocking the packet as a brute force attack. I capture a WireShark Logs, but I was not able to see anything related to Brute Force. I filtered the "tcp.flags.sync==1 between a source and the destination, and that is what I seeing continuously.

From Source (1.1.1.1) to Destination (2.2.2.2)-------------[SYN,ECE,CWR], MSS=1460, WS=256 SACK_PERM
From Source (2.2.2.2) to Destination (1.1.1.1)-------------[SYN,ACLK,ECE], MSS=1460, WS=256 SACK_PERM

Can someone shed some light since I just started using WireShark