It separates the underlying network structure and protocol from how users interact with the network ; as a result, there are a variety of ways to access content on the Freenet network.

The Freenet protocol is intended to be used on a network of complex topology, such as the Internet ( Internet Protocol ).

Freenet and early implementations of the gnutella protocol, on the other hand, are examples of the decentralized model.

Every node on the Freenet network contributes storage space to hold files, and bandwidth that it uses to route requests from its peers.

Freenet's founders argue that only with true anonymity comes true freedom of speech, and that what they view as the beneficial uses of Freenet outweigh its negative uses.

Currently Freenet uses the DSA algorithm.

* Finally, Freenet is fully distributed, but employs a heuristic key-based routing in which each file is associated with a key, and files with similar keys tend to cluster on a similar set of nodes.

Distributed hash tables use a more structured key-based routing in order to attain both the decentralization of Freenet and gnutella, and the efficiency and guaranteed results of Napster.

Prior to version 0. 7, Freenet used a heuristic routing algorithm where each node had no fixed location, and routing was based on which node had served a key closest to the key being fetched ( in version 0. 3 ) or which is estimated to serve it faster ( in version 0. 5 ).

One drawback is that, like Freenet, DHTs only directly support exact-match search, rather than keyword search, although Freenet's routing algorithm can be generalized to any key type where a closeness operation can be defined.

Freenet works by storing small encrypted snippets of content distributed on the computers of its users and connecting only through intermediate computers which pass on requests for content and sending them back without knowing the contents of the full file, similar to how routers on the Internet route packets without knowing anything about files — except with caching, a layer of strong encryption, and without reliance on centralized structures.

In version 0. 7, Freenet supports both ' Opennet ' ( similar to the old algorithms, but simpler ), and ' Darknet ' ( all node connections are set up manually, so only your friends know your node's IP address ).

The scalability of Freenet is being evaluated, but similar architectures have been shown to scale logarithmically.

* Tahoe Least-Authority Filesystem – I2P version, giving similar functionality to Freenet

Publishing a file generated a unique identifier ( similar to a Freenet SSK ) that was required to download and decrypt the file.

Entropy was designed to be compatible with the similar Freenet system.

The distributed datastore of Freenet is used by many third-party programs and plugins to provide microblogging and media sharing, anonymous, decentralised version tracking, blogging, a generic Web of trust for decentral spam resistance, Shoeshop for using Freenet over Sneakernet and many more.

Information stored on Freenet is distributed around the network and stored on several different nodes.

Unlike other P2P networks, Freenet not only transmits data between nodes but actually stores them, working as a huge distributed cache.

So the data in a newly started Freenet will be distributed somewhat randomly.

DT research was originally motivated, in part, by peer-to-peer systems such as Freenet, gnutella, and Napster, which took advantage of resources distributed across the Internet to provide a single useful application.

Freenet is a censorship-resistant distributed data store.

Freenet is a pioneering anonymous peer-to-peer distributed data store

Besides this he has an active interest in distributed computer networks and network security, and has been an active contributor to the Freenet Project since 1999.

Freenet is a peer-to-peer platform for censorship-resistant communication.

Both Freenet and some of its associated tools were originally designed by Ian Clarke, who defines Freenet's goal as providing freedom of speech with strong anonymity protection.

Freenet has been under continuous development since 2000.

Since Version 0. 7 ( 2008 ), it offers two modes of operation: a darknet mode in which it connects only to friends, and an opennet-mode in which it connects to any other Freenet user.

When a user changes to pure darknet operation, Freenet becomes very difficult to detect from the outside.

Freenet has always been free software, but for most of its history it required users to install non-free Java software.

In 2011, this problem was solved and Freenet can now also work with the free OpenJDK Java system.

Freenet is different from most other peer-to-peer applications, both in how users interact with it and in the security it offers.

While Freenet provides an HTTP interface for browsing freesites, it is not a proxy for the World Wide Web ; Freenet can only be used to access content that has been previously inserted into the Freenet network.

Many of the differences in how Freenet behaves at a user level are direct or indirect consequences of its strong focus on free speech and anonymity.

Since Version 0. 7, Freenet offers two different levels of security: Opennet and Darknet.

Freenet attempts to remove the possibility of any group imposing their beliefs or values on any data.

In essence, the purpose of Freenet is that nobody is allowed to decide what is acceptable.

One group, Freenet-China, used to translate the Freenet software to Chinese and distribute it within China on CD and floppy disk until mid-2003.

The Freenet file sharing network stores documents and allows them to be retrieved later by an associated key, as is now possible with protocols such as HTTP.

At the time it was being developed, a full, reliable connection-oriented protocol like TCP was considered to be too expensive to implement for most of the intended uses of AppleTalk.

AOL Instant Messenger ( AIM ) is an instant messaging and presence computer program which uses the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time.

The simplest, and original, implementation of the protocol uses the multiplicative group of integers modulo p, where p is prime and g is primitive root mod p. Here is an example of the protocol, with non-secret values in < span style =" color: blue "> blue </ span >, and secret values in < span style =" color: red "> boldface red </ span >:

A slave server uses an automatic updating mechanism of the DNS protocol in communication with its master to maintain an identical copy of the master records.

A DHCP client uses the DHCP protocol to acquire configuration information, such as an IP address, a default route and one or more DNS server addresses from a DHCP server.

The DECT data link layer uses LAPC ( Link Access Protocol Control ), a specially designed variant of the ISDN data link protocol called LAPD.

The network uses the AS 2805 protocol.

The 802. 11a standard uses the same data link layer protocol and frame format as the original standard, but an OFDM based air interface ( physical layer ).

For example, Microsoft's Outlook client uses a proprietary protocol to communicate with a Microsoft Exchange Server server as does IBM's Notes client when communicating with a Domino server, but all of these products also support POP, IMAP, and outgoing SMTP.

APOP is a challenge / response protocol which uses the MD5 hash function in an attempt to avoid replay attacks and disclosure of the shared secret.

More recently, Wikipedia has offered a secure login option, which, like many e-commerce sites, uses the SSL / ( TLS ) cryptographically based protocol to eliminate the cleartext transmission.

Although BB84 does not use entanglement, Ekert's protocol uses the violation of a Bell's inequality as a proof of security.

Each network interface uses this specialized computer software to enable data packets to be forwarded from one protocol transmission system to another.

The router uses External BGP to EBGP protocol routers in other ISPs, or a large enterprise Autonomous System.

* Subscriber edge router: Also called a Customer Edge router, is located at the edge of the subscriber's network, it also uses EBGP protocol to its provider's Autonomous System.

* Within an ISP: In the ISPs Autonomous System, a router uses internal BGP protocol to communicate with other ISP edge routers, other intranet core routers, or the ISPs intranet provider border routers.

* XML-RPC is an RPC protocol that uses XML to encode its calls and HTTP as a transport mechanism.

* JSON-RPC is an RPC protocol that uses JSON-encoded messages

* JSON-WSP is an RPC protocol that uses JSON-encoded messages

The protocol for new submissions ( MSA ) is effectively the same as SMTP, but it uses port 587 instead.

SDP uses attributes to extend the core protocol.