Cisco Bug: CSCvu54000 - Firepower 4100 FTP Client in EPSV passive mode is not able to establish data channel with the Server
Sep 01, 2020
- Cisco Firepower Management Center
Known Affected Releases
Symptom: When FTP Client works in EPSV passive mode, the data channel is treated as a new connection and FTP session might fail depending on AC policy. Conditions: Client uses EPSV passive mode: Access Control Policy Rule contains: Port: FTP, FTP-Data-20 Action Allow Default rule : Block all traffic Now from an FTP endpoint, try to login to the server and upload a file. Expected output: File upload should go through. Actual Output: File upload is blocked.
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