====== 2.3.2 Network Access Control Taxonomy ======
[[dido:public:ra:1.2_views:3_taxonomic:start|return to Taxonomic Views ]]


Network access control [[dido:public:ra:xapend:xapend.a_glossary:t:taxonomy|taxonomy]] classifies the types of access individuals (i.e., [[dido:public:ra:xapend:xapend.a_glossary:n:node|nodes]]) have from outside and from within the [[dido:public:ra:xapend:xapend.a_glossary:n:node_network|node network]]. The two main classes of [[dido:public:ra:xapend:xapend.a_glossary:a:accesscontrol|access control]] are 
[[dido:public:ra:xapend:xapend.a_glossary:p:permissionless| permissionless]] and 
[[dido:public:ra:xapend:xapend.a_glossary:p:permissioned| permissioned]].(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
))

Within each of these two classifications it is possible to have
[[dido:public:ra:xapend:xapend.a_glossary:p:public_network| public]] and 
[[dido:public:ra:xapend:xapend.a_glossary:p:private_network| private]] access. Public and private access define who is able to write data onto a network or [[dido:public:ra:xapend:xapend.a_glossary:l:ledger|ledger]]. In contrast, open (i.e., permissionless) and closed (i.e., permissioned) determine who is able to read the data. Networks are classified as(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)): 
  * public and open
  * public and closed
  * private and open
  * private and closed

<figure>
{{ dido:public:ra:1.2_views:1_stake:3_taxonomic:access_control_taxonomy.png?400 |}}
<caption>The Node Network Access Taxonomy
</caption>
</figure>

Another category of networks is a [[dido:public:ra:xapend:xapend.a_glossary:h:hybrid_network| hybrid network]], which makes it possible to restrict the visibility of information on the network using a combination of
[[dido:public:ra:xapend:xapend.a_glossary:p:public_network| public]], 
[[dido:public:ra:xapend:xapend.a_glossary:p:private_network| private]], 
[[dido:public:ra:xapend:xapend.a_glossary:p:permissionless| permissionless]] and 
[[dido:public:ra:xapend:xapend.a_glossary:p:permissioned|permissioned
networks]]. Therefore, hybrid networks are appealing to regulated markets because they offer the benefits of public blockchain and private blockchain together.((
"Hybrid Blockchain: Decentralized Option for Highly Regulated Markets - Few players in highly regulated markets have adopted blockchain technology. However, hybrid blockchain will change this.", Mina Down, 14 November 2018 [[https://blog.goodaudience.com/hybrid-blockchain-decentralize-highly-regulated-markets-900f30a37903 ]]))

<table DidoAccess>
<caption>Taxonomy of DIDO Access Control</caption>
|  [[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:permisionless|Permissionless Networks]]   |  [[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:permissioned|Permissioned Networks]]  |
|   [[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:public|Public Networks]]   |   [[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:private|Private Networks]]  |
|  [[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:hybrid|Hybrid Networks]]   ||
</table>

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