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NbtFilter

cev-api edited this page Jun 6, 2026 · 1 revision

NbtFilter

  • Filters dangerous NBT, item-stack, entity-metadata, block-entity, bundle, and chunk packets.
  • Can quarantine bad chunks and bad entities so follow-up packets keep getting blocked instead of re-triggering the same trap.
  • Raw packet decode protection drops oversized/dangerous clientbound packets earlier in the network path via PacketDecoderMixin.
  • Escape Mode and hard quarantine controls for severe chunkban situations.
  • Can sanitize embedded chunk block-entity records, strip dangerous records while preserving terrain, and optionally allow safe terrain/light/block updates for bad chunks.
  • Configurable limits for chunk size, block entity NBT, item stack NBT/components, suspicious packet size, bundle inspection, item-stack carrier packets, entity metadata, and fail-closed exception handling.
  • Session summaries include blocked chunks, block entities, entity metadata packets, item stack carrier packets, bundle scans, and quarantine counts.

Parent: What's new in this fork?

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