EasyTier Privacy Policy
Effective Date: July 15, 2026
EasyTier is a simple, secure, decentralized tool for intranet penetration and remote networking. In this document, “EasyTier Official” and “we” refer to the development team of the open-source version of EasyTier, while “EasyTier” and “the software” refer to software officially distributed by EasyTier and its related services. This Privacy Policy explains how we handle relevant privacy information when you install and use EasyTier.
This policy applies only to first-party software officially distributed by EasyTier and services provided by EasyTier Official. It does not apply to any third-party services or software.
EasyTier Pro is a commercial version based on the EasyTier open-source project and is developed by Chengdu Yisitai Technology Co., Ltd. This policy does not apply to EasyTier Pro.
The original version of this policy is written in Chinese. In the event of any discrepancies in interpretation, the Chinese version shall prevail.
1. Information Related to Inter-Node Communication
1.1 Node Discovery Information
In networking scenarios other than “Standalone” mode, in order to enable interconnection between devices across networks and perform NAT traversal, the software will access networking servers manually specified by the user. When initiating a network or searching for peer nodes, the client program sends connection requests to the server. Such requests may include, but are not limited to, the local node’s network configuration parameters and virtual IP address. Based on these requests, the server identifies and returns the client’s public-facing IP address and port information, and announces the necessary metadata to authorized peer nodes whose network configurations are compatible.
1.2 Network Connection Information
To optimize data transmission efficiency and automatically select the best paths, the software dynamically processes local network topology information during operation, including but not limited to peer node latency, connection path status, and packet loss rates, and announces this information to peer nodes. Such technical information is maintained in real time only in device memory, solely to ensure network stability and performance. It is not uploaded to any central server, nor is it persistently stored across sessions.
1.3 Statement on Information Processing
The data described in this section may contain information capable of identifying a user’s personal identity. For public servers and relay nodes, the client may transmit such data in plaintext. We do not take responsibility for the security of data during transmission; please be aware of the associated risks. For public servers provided by this software, we process such data only to the extent necessary for node discovery, connection establishment, and network maintenance. We do not persistently store the data, nor do we use it for any other purposes. For third-party servers, we do not control their data processing policies and assume no responsibility for them.
2. Traffic and Security
2.1 Data Encryption
The software uses industry-standard symmetric encryption algorithms (such as AES-GCM or ChaCha20-Poly1305) by default to protect all transmitted traffic. Users are required to configure a consistent pre-shared key (PSK) among networking nodes. All data transmitted through this software is encrypted before leaving the sender, ensuring that only legitimate nodes holding the correct key can decrypt and read the communication content. We do not possess your private keys and therefore cannot access any of your communication data.
2.2 Data Handling in Relay Mechanisms
In complex network environments where direct P2P connections cannot be established, encrypted traffic may be forwarded through relay nodes. Even in such scenarios, the traffic remains symmetrically encrypted. Relay nodes are responsible only for packet forwarding and routing, do not have decryption capabilities, and cannot access or analyze the encrypted original data content.
2.3 End-to-End Encryption
EasyTier provides an optional end-to-end encryption feature that allows users to establish independent encrypted channels between nodes. When this feature is enabled, data is encrypted at the sender and decrypted at the recipient, preventing any intermediary relay or server from accessing the plaintext data. Users are responsible for managing their end-to-end encryption keys and configurations to ensure secure communications.
3. Third-Party Services
3.1 STUN Services
To assist with NAT detection and hole punching, the software allows users to optionally use third-party STUN servers, all of whose addresses are disclosed in the relevant source code. When the software interacts with these servers, your public IP address, port information, and basic network metadata may be exposed to those third-party service providers. The processing of such data is governed by the respective providers’ own privacy policies. Please review the relevant policies of those parties.
3.2 Third-Party Nodes
The software allows users to specify and connect to EasyTier networking or relay nodes operated by third parties. Users should be aware that connecting to such servers means that your connection metadata (such as IP address and network information) will be visible to the server operator. We assume no responsibility for the security, data handling practices, or service stability of any third-party servers, nor any direct or indirect legal liability arising therefrom.
4. Data Retention and Storage
4.1 Local Configuration Storage
This software stores network configuration files (including virtual IP addresses, pre-shared symmetric keys, node public/private keys, and peer addresses) on your local device. The software does not provide any form of cloud backup or synchronization services. Such sensitive configuration information will never be automatically synchronized or uploaded to any central server. Users are responsible for managing the security of their local configuration files.
4.2 Logs and Analytical Data
This software does not collect or transmit user operation logs, behavioral patterns, or traffic analysis data. All runtime data used to maintain network connections is stored only in local memory. Once the program is closed or the process terminates, such temporary data is immediately cleared and leaves no trace on local disks or remote servers.
4.3 Server-Side Data Storage
EasyTier Official does not provide or maintain any official EasyTier servers. It only distributes server-side source code and software that users may deploy themselves. Server software officially distributed by EasyTier temporarily maintains node discovery and network connection information in memory only when necessary. Such data becomes invalid as soon as a node goes offline or a connection is established. The software does not persistently store such data or use it for any purpose other than connection establishment. For third-party servers to which users connect, we cannot control their data storage policies and assume no responsibility for their storage practices.
5. Children’s Privacy Protection
EasyTier is a network utility software and is not designed to attract or target children. As the software does not implement an account system and does not collect personal identity information by design, we do not knowingly collect, process, or store any personal data of children under the age of 13 (or the applicable age as defined by local laws).
6. Policy Revisions
As software features evolve or the legal environment changes, we may revise this Privacy Policy from time to time. Any revisions will be updated on this page and marked with a revised effective date. We recommend that you review this policy periodically to stay informed about our latest practices regarding technical data handling and privacy protection. Your continued use of the software after policy revisions indicates that you have read and accepted the updated policy.
7. Contact Us
If you have any questions about this Privacy Policy or EasyTier’s data handling practices, please contact us via Contact Information.