Fail2zig. A single-binary fail2ban replacement written in Zig

What it does

Reads your logs, detects repeated failures, and bans offending IPs. A familiar job, with a smaller runtime and explicit resource limits. The same log-to-ban model, with explicit boundaries around the work your server does. One static executable combines the daemon, administration and migration tools. No Python runtime or separate database server is required. Source progress, retry state and protection ownership survive restart in SQLite. Bounded admission retains critical state when resources run short. Built-in filters compile into specialised parsers. A single pass extracts the address, with bounds checks and no allocations in the hot path. Typed intent is persisted before dispatch, then…from fail2zig.com

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