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====== 2.3.2.4 Private Networks ======
[[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:start|return to Network Access Control ]]

A **[[dido:public:ra:xapend:xapend.a_glossary:p:private_network|private network]]** limits access to the network to individuals or nodes granted and verified to have permission to participate in joining, leaving, reading, writing, and auditing activities on the network. A participant joins a private network only through an authentic and verified invitation; [[dido:public:ra:xapend:xapend.a_glossary:v:validation|validation]] is performed either by the network operator(s) or using a clearly defined set of protocols implemented by the network((
"Public, Private, Permissioned [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain]] Compared", Shobhit Seth, Investopedia, 10 April 2018, 
[[https://www.investopedia.com/news/public-private-permissioned-blockchains-compared/ ]]
)). 

  * **Note:** Recently, the idea of Private Networks as more secure is seriously challenged by the [[dido:public:ra:xapend:xapend.a_glossary:z:zero-trust_model]] which basically states that establishing a secure perimeter is not enough to establish a trust to the individual or the machine. Especially with the advent of cloud-based architectures and people needing to use multiple devices from inside and outside the confines of the secure perimeter.

==== Benefits of Private Networks ====
  * **Enterprise 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]]
)): \\ 
   <wrap>The enterprise controls the resources and access to the [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]], hence private and/or permissioned.</wrap>
 
    
  * **Faster Transactions**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)): \\  
   <wrap>When you distribute the nodes locally, but also have far fewer nodes that participate in the [[dido:public:ra:xapend:xapend.a_glossary:l:ledger|ledger]], [[dido:public:ra:xapend:xapend.a_glossary:p:performance|performance]] is faster.</wrap>
 
    
  * **Better [[dido:public:ra:xapend:xapend.a_glossary:s:scalable|Scalability]]**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)): \\ 
   <wrap>Being able to add nodes and services on demand can provide a great advantage to the enterprise.</wrap>
 
    
    * **Compliance Support**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)):  \\ 
   <wrap>As an enterprise, you would likely have compliance [[dido:public:ra:xapend:xapend.a_glossary:r:requirement|requirements]] to adhere to; having control of your infrastructure enhances ability to satisfy this requirement more seamlessly.</wrap>  
 
    
  * **Consensus More Efficient (fewer nodes)**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)):  \\ 
   <wrap>Enterprise or private blockchains have fewer nodes and usually a different consensus algorithm, such as BFT vs PoW.</wrap>

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