吉牛网是基于点对点网络(peer-to-peer)的一种网络架构.吉牛网主要的应用在于匿名抗审查的文件共享.

吉牛网项目(GNUnet)的目的在于给P2P网络提供一个安全的基础架构. All communication in GNUnet is authenticated and link-to-link encrypted.* The economic model makes attacks on the network harder since the economics can be used to control resource usage.* GNUnet peers exchange messages using a pluggable transport service abstraction.* Currently, transport services based on UDP, TCP, HTTP and SMTP are available.* The GNUnet core provides mechanisms to perform resource allocations for CPU, bandwidth and storage space.* The core enforces resource limitations set by the user.* GNUnet does not rely on any centralized services.* New Peer-to-Peer protocols can be easily implemented on top of the basic GNUnet infrastructure.* Current protocols include anonymous file sharing, a trivial chat protocol, message throughput benchmarking and network topology visualization.* While our goals are similar to projects like自由网(Freenet), Gnutella, Mnet* , and others, we hope to provide a superior combination of features for users that value security more than efficiency.*

通讯方式

GNUnet默认采用TCP 通讯方式，默认登陆端口为TCP 2086、1080、2088、2186、13881。当这些端口都无法通讯时，就无法登陆。

如何封堵GNUnet？

1、由于GNUnet端口较为固定，所以可以通过封堵端口和IP的方式将其封堵

2、通过专业的网管软件，解析出GNUnet的传输的协议特征码，通过对协议特征码的拦截来实现对GNUnet的封堵。

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