FTP timeout during transfer
Why FTP transfers timeout and how to fix idle timeout or firewall issues.
Diagnose this automatically
Test whether the server allows directory listing with valid credentials.
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FTP transfers may timeout if the data channel is interrupted or idle time limits are reached.
Common causes
- Firewall closing idle connections
- Slow network connection
- Server timeout configuration
Fix checklist
- Increase FTP timeout settings.
- Verify firewall idle timeout configuration.
- Use passive mode if active mode fails.
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Related
- FTP passive mode firewall issues — Why FTP PASV fails behind firewalls/NAT and how to configure passive ports correctly.
- FTP data connection failed — Why FTP data connections fail and how to troubleshoot passive and active data channel issues.
- FTP directory listing timeout — Why FTP directory listings hang or timeout and how to resolve passive mode firewall problems.
- FTP passive mode not working — Why FTP passive mode fails and how to configure passive ports and NAT correctly.
- FTP EPSV error — Understanding FTP EPSV errors and how to resolve extended passive mode problems.
- FTP transfer stalls — Why FTP transfers stall mid-transfer and how to troubleshoot data channel issues.
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