1.2 SoftEther VPN Components

Combined revision comparison

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Multiple Virtual HubsHUBs can be created for SoftEther VPN Server and Ethernet frames can be exchanged within Virtual HubHUB. For more information on Virtual HubHUB, see #1.4.2#.

If a new VPN session is connected to Virtual HubHUB  for other VPN Server, concerning Ethernet frames flowing through user authentication function Virtual HubHUB, the majority of the functions required for network administration such as packet filtering by access list of security policy are provided. For more information on these functions, see #3#.

If multiple Virtual HubsHUBs are created within SoftEther VPN Server, a virtual layer 3 switch function is provided to conduct IP routing among Virtual HubsHUBs. A detailed description of virtual the layer 3 switch function is provided in #3.8#.

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Multiple Virtual HubsFig. 1-2-1 Multiple Virtual HUBs and virtual layer 3 switches can be created for a single SoftEther VPN Server.

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SoftEther VPN Server can perform bridge connection by layer 2 with Ethernet segment of network adapter connected to computer operating any Virtual HubHUB and its SoftEther VPN Server. This is called a local bridge. A detailed description of local bridges is provided in #3.6#. A SoftEther VPN Server in local bridge status can connect to the SoftEther VPN Server from a remote location and access the bridge destination network. For specific configuration method, see #10.4#.

VPN among hubs  can be easily realized by cascade connection of from Virtual HubHUB connected by local bridge to a hub at a remote location to Virtual HubHUB connected by local bridge on SoftEther VPN Server side. For specific configuration method, see #10.5#.

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Fig. 1-2-2 Bridge connection between Virtual HubHUB and physical network adapter by local bridge function.

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Virtual HubHUB operated by SoftEther VPN Server can be connected with Virtual HubHUB operated by SoftEther VPN Server on same or separate computer by cascade connection. Cascade connection can also be a accepted from SoftEther VPN Bridge operating on a separate computer. By connecting two or more different Ethernet segments using cascade connection, you can use the two LANs, which were originally separate of each other as LAN of a single segment. A detailed description of cascade connection is provided in #3.4.11#.

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Fig. 1-2-3 Cascade connection established between Virtual Hub and Virtual Hub.HUB and Virtual HUB

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Fig. 1-2-4 Location of SoftEther VPN Server and SoftEther VPN Bridge.

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SoftEther VPN Client is VPN client software that functions as a Virtual Network Adapter that can connect to Virtual HubHUB of SoftEther VPN Server. With a computer installed with SoftEther VPN Client, the user can access via the Internet with only simple settings, and can carry out random communication by connecting to Virtual HubHUB of SoftEther VPN Server via Virtual Network Adapter.

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Fig. 1-2-5 VPN connection to Virtual HubHUB by SoftEther VPN Client.

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Virtual Network Adapter.Fig. 1-2-6Virtual Network Adapter

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SoftEther VPN Bridge is software that enables cascade connection to Virtual HubHUB of SoftEther VPN Server operating at a remote location, and also enables VPN connection to be layer 2 bridge connection between a physical network adapter and computer running SoftEther VPN Bridge. SoftEther VPN Bridge is optimal software for introducing to computer connected by LAN of the hub if you want to bridge connect hub LAN at a remote location to VPN configured by SoftEther VPN Server (in other words Virtual HubHUB operating on SoftEther VPN Server).

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Fig. 1-2-7 Bridge connection to remote hub by SoftEther VPN Bridge.

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SoftEther VPN Bridge is technically software optimized for bridge hub by removing the function for creating multiple Virtual HubsHUBs and function for accepting connection from SoftEther VPN Server and SoftEther VPN Client of other computer from the software program of SoftEther VPN Server. When SoftEther VPN Bridge is installed, a single Virtual HubsHUB named "BRIDGE" is created. The network administrator makes a local bridge with the LAN of the hub to bridge the Virtual HubsHUB and connects to the Virtual HubsHUB of the SoftEther VPN Server of the connection destination.

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Fig. 1-2-8 Difference between SoftEther VPN Server and SoftEther VPN Bridge.

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A Virtual HubHUB named "BRIDGE" exists in SoftEther VPN Bridge, but can connect from "BRIDGE" Virtual Hub to Virtual HubHUB to Virtual HUB of SoftEther VPN Server operating at a remote location and the physical network adapter of the computer on which "BRIDGE" Virtual HubHUB  and SoftEther VPN Bridge are running can be connected by local bridge function.

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Fig. 1-2-9 SoftEther VPN Server Manager.

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Fig. 1-2-10 SoftEther VPN command line management utility (vpncmd).)

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