426
FTP
426 Connection Closed
Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Quand vous voyez ce code
When a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Comment résoudre
Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.
Spécification
Comparer avec
Guides
FTP Reply Codes: Understanding File Transfer Responses
DNS & Networking
TCP Three-Way Handshake and Connection Lifecycle
DNS & Networking
Essential Network Debugging Tools: ping, traceroute, mtr, and tcpdump
DNS & Networking
RFC 959: FTP Protocol Deep Dive
Protocol Deep Dives
TLS 1.3: Faster, Simpler, More Secure
Protocol Deep Dives
Migrating from FTP to SFTP: A Complete Transition Guide
Migration & Upgrades
HTTP Access Log Management: Rotation, Parsing, and Analysis
Production Infrastructure
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Glossaire
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FTP Chroot Jail
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rsync
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FTP NAT Traversal
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FTP over TLS (RFC 4217)
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