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・ Private Lives of Nashville Wives
・ Private Mail Bag
・ Private Master
・ Private Media Group
・ Private medicine in the UK
・ Private member's bill
・ Private Members' Bills in the Parliament of the United Kingdom
・ Private military company
・ Private militias in Iraq
・ Private money
・ Private money investing
・ Private mortgage
・ Private Motor Coach, Inc
・ Private museum
・ Private Music
Private network
・ Private Network-to-Network Interface
・ Private nonindustrial forest land
・ Private Number
・ Private Number (film)
・ Private Number (Judy Clay and William Bell song)
・ Private Number (The Jets song)
・ Private Nurse
・ Private Odartey Lamptey
・ Private Officer of Arms
・ Private Opera
・ Private overprint
・ Private Oyster
・ Private Paradise Secondary School
・ Private participation in railway share


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Private network : ウィキペディア英語版
Private network
In the Internet addressing architecture, a private network is a network that uses private IP address space, following the standards set by RFC 1918 for Internet Protocol Version 4 (IPv4), and RFC 4193 for Internet Protocol Version 6 (IPv6). These addresses are commonly used for home, office, and enterprise local area networks (LANs). Private IP address spaces were originally defined in an effort to delay IPv4 address exhaustion, but they are also a feature of IPv6.
Addresses in the private space are not allocated to any specific organization and anyone may use these addresses without approval from a regional Internet registry. However, IP packets addressed from them cannot be transmitted through the public Internet, and so if such a private network needs to connect to the Internet, it must do so via a network address translator (NAT) gateway, or a proxy server.
==Private IPv4 address spaces==
The Internet Engineering Task Force (IETF) has directed the Internet Assigned Numbers Authority (IANA) to reserve the following IPv4 address ranges for private networks, as published in RFC 1918:
Users can randomly assign networks and subnets from the above ranges, however as the space is relatively small this can create conflicts when merging (see below).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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