> For the complete documentation index, see [llms.txt](https://docs.aeternity.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aeternity.com/aeternity-developer-tools/protocol/network-layer/sync.md).
# Sync
The Sync protocol is a fundamental component of æternity's network infrastructure, enabling nodes to exchange and synchronize state transitions across the distributed ledger in a secure and efficient manner. It defines how peers discover each other, communicate, and share blockchain data, even in environments where participants may not trust each other or could be acting maliciously. The documentation provides detailed specifications of the sync protocol, covering transport layer security, peer-to-peer networking, bootstrapping mechanisms, and synchronization procedures for blocks and transactions. Special attention is given to security considerations, including threat models and protection against various attack vectors.
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