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Cedar: Add "DefaultGateway" and "DefaultSubnet" virtual hub options

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WireGuard does not provide any configuration messages, meaning that we cannot push the IP address we receive from the DHCP server to the client.

In order to overcome the limitation we don't perform any DHCP operations and instead just extract the source IP address from the first IPv4 packet we receive in the tunnel.

The gateway address and the subnet mask can be set using the new "SetStaticNetwork" command. The values can be retrieved using "OptionsGet".

In future we will add a "allowed source IP addresses" function, similar to what the original WireGuard implementation provides.

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SetStaticNetwork command - Set Virtual Hub static IPv4 network parameters
Help for command "SetStaticNetwork"

Purpose:
  Set Virtual Hub static IPv4 network parameters

Description:
  Set the static IPv4 network parameters for the Virtual Hub. They are used when DHCP is not available (e.g. WireGuard sessions).
  You can get the current settings by using the OptionsGet command.

Usage:
  SetStaticNetwork [/GATEWAY:gateway] [/SUBNET:subnet]

Parameters:
  /GATEWAY - Specify the IP address of the gateway that will be used for internet communication.
  /SUBNET  - Specify the subnet mask, required to determine the size of the local VPN network.
This commit is contained in:
Davide Beatrici
2020-09-01 03:04:14 +02:00
parent decfcecc97
commit afe576dcdc
14 changed files with 171 additions and 10 deletions
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13
src/bin/hamcore/strtable_tw.stb
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@ -5101,6 +5101,16 @@ CMD_Offline_Help 如果您正在管理的虛擬 HUB 線上，設置成離線
CMD_Offline_Args Offline
# SetStaticNetwork 命令
CMD_SetStaticNetwork Set Virtual Hub static IPv4 network parameters
CMD_SetStaticNetwork_Help Set the static IPv4 network parameters for the Virtual Hub. They are used when DHCP is not available (e.g. WireGuard sessions). \nYou can get the current settings by using the OptionsGet command.
CMD_SetStaticNetwork_Args SetStaticNetwork [/GATEWAY:gateway] [/SUBNET:subnet]
CMD_SetStaticNetwork_GATEWAY Specify the IP address of the gateway that will be used for internet communication.
CMD_SetStaticNetwork_SUBNET Specify the subnet mask, required to determine the size of the local VPN network.
CMD_SetStaticNetwork_Prompt_GATEWAY Gateway:
CMD_SetStaticNetwork_Prompt_SUBNET Subnet mask:
# SetMaxSession 命令
CMD_SetMaxSession 設定虛擬 HUB 的最大同時線上用戶數量
CMD_SetMaxSession_Help 設定現在正在管理的虛擬 HUB 的最大同時線上客戶數量。當超過這個數量時，如果從 VPN Client 和 VPN Bridge 連接的時候，超過了最大併發會話數，更多的客戶將無法連接。最大同時線上客戶數的限制不包括本地的橋接器，虛擬的 NAT，級聯連接等生成連接不包括在內。\n設置同時線上最大數目，可以通過運行 OptionsGet 命令獲得。\n此命令，在 VPN Bridge 中不會運行。\n此命令在集群虛擬 HUB 中不能運行。
@ -5137,7 +5147,8 @@ CMD_OptionsGet_ENUM 對於匿名使用者的虛擬 HUB 的顯示
CMD_OptionsGet_MAXSESSIONS 最大同時線上客戶數
CMD_OptionsGet_STATUS 狀態
CMD_OptionsGet_TYPE 虛擬 HUB 的類型
CMD_OptionsGet_GATEWAY Default gateway
CMD_OptionsGet_SUBNET Default subnet
# RadiusServerSet 命令