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LogMeIn Hamachi
LogMeIn Hamachi is a popular virtual private network (VPN) application that allows users to create secure, encrypted peer-to-peer connections over the internet. It uses dedicated mediation servers to establish and manage VPN tunnels between clients. Port 12975 is typically used by the Hamachi client to communicate with the mediation server, facilitating network creation and management. If communication via this port is unavailable, Hamachi may attempt to use alternative ports or fallback to SSL protocols to maintain connectivity..
LogMeIn Hamachi is a hosted VPN service that enables users to securely extend LAN-like networks over the public internet. It achieves this by establishing virtual connections between multiple computers, making them appear as if they were on the same local network. This is particularly useful for gaming, file sharing, and remote access scenarios.
Port 12975 is primarily utilized by the Hamachi client to communicate with LogMeIn's central mediation server (such as bibi.hamachi.cc). This server acts as a broker to help peers discover each other and establish direct or relayed connections. Hamachi also attempts to use port 32976 if 12975 is unavailable, and as a further fallback, it will try to connect via HTTPS on TCP port 443. This multi-port strategy enhances reliability in diverse network environments.
The communication over port 12975 typically includes client registration, session establishment, status updates, and NAT traversal processes. Though traffic on this port is not necessarily encrypted by default, the application strives to maintain privacy and connectivity through additional SSL channels when direct connections are not possible.