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Developer tools · #filezilla
A technical guide to choosing between FTP, FTPS, and SFTP in FileZilla, focusing on security trade-offs, firewall traversal, and verification of encrypted connections.
A diagnostic guide for resolving 'Could not connect to server' errors in FileZilla, covering protocol mismatches, firewall timeouts, and Passive mode configuration.
Stop sending passwords in plain text. Learn how to configure Explicit FTPS in FileZilla to secure your control and data channels while avoiding common firewall timeouts.
After editing FileZilla's site manager XML (sitemanager.xml) to add custom fields or change the schema, I need a way to revert those changes if the file becomes invalid or causes connection profiles to disappear. The goal is to keep all existing site entries intact and usable after a rollback, without manually re‑entering data. What is the recommended proced
Clarify the documented limits for concurrent operations in the FileZilla client and how queuing is applied when those limits are reached. The client is reported to allow a default maximum of simultaneous data transfers and to use a fixed thread pool for control connections. Behavior is said to differ between client and server editions, and server-side concur
FileZilla does not provide a built-in restore workflow; users must copy files from a local backup archive to the remote site using the selected protocol. The verification of transferred files relies on manual comparison of size, timestamps, or checksums, and there is no documented automated checksum report generation. When restoring across different protocol
Goal: maintain reliable FileZilla Server availability during traffic bursts while avoiding intermittent "421" Too many connections responses. Constraints: the server enforces a global maximum simultaneous connections (default 50) and per‑IP limits; exceeding these triggers "421" errors. The FileZilla Client can limit concurrent transfers, which reduces the r
Goal: Identify the root cause of latency spikes that occur only when FileZilla handles multiple simultaneous transfers, even though the client maintains a connection pool to avoid repeated handshakes. Uncertainty remains whether the delay originates from the client's internal queue management, from hitting the server's max‑connections‑per‑IP threshold, or fr
Goal: Keep the global queue‑completion sound alert active for most transfers while silencing it for specific sites or connections that generate frequent, low‑priority queues. Constraint: FileZilla’s Notifications panel offers only a single toggle for the "Queue completed" event; there is no per‑site, per‑folder, or per‑file override, and the "Run program" ac