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Laplink
Laplink is a proprietary file transfer software originally designed to simplify migrating files and settings between PCs. It leverages this dedicated port to establish connections between devices, enabling quick, user-friendly migration or synchronization tasks without needing extensive configuration..
Laplink software uses port 1547 for its communication, primarily to facilitate peer-to-peer data transfer between two computers. It typically operates by creating a direct connection that allows file migration, disk imaging, or system transfer, supporting various transfer mediums such as parallel cables, USB, and network TCP/IP connections.
Technically, the protocol manages session establishment, data segmentation, error correction, and reconnection if a link is dropped. Being compatible with both TCP and UDP, it can provide reliable transfers over TCP or faster, connectionless interactions with UDP depending on the source and destination configurations.
Since it's proprietary, comprehensive protocol specifications are not publicly disclosed. However, the design emphasizes ease of user interaction and cross-version compatibility, intended mainly for consumer or SMB use during PC upgrades, migrations, or cloning scenarios.