我已经在使用virtualbox的centos 5.7服务器上创build了ubuntu vm。 连接远程桌面没有任何问题。 但我的问题是我无法弄清楚如何设置主机和客户端操作系统之间的连接，以便访客操作系统（Ubuntu 10.04服务器）可以访问主机操作系统的互联网（centos 5.7）。

下面是我的几个命令输出。

VBoxManage showvminfo“Ubuntu 10.04.4.1服务器” – 详细信息

Name: Ubuntu 10.04.4.1 Server Guest OS: Other/Unknown UUID: bf9f83a7-80c8-4e23-b0ad-06d82bf81f95 Config file: /root/VirtualBox VMs/Ubuntu 10.04.4.1 Server/Ubuntu 10.04.4.1 S erver.vbox Snapshot folder: /root/VirtualBox VMs/Ubuntu 10.04.4.1 Server/Snapshots Log folder: /root/VirtualBox VMs/Ubuntu 10.04.4.1 Server/Logs Hardware UUID: bf9f83a7-80c8-4e23-b0ad-06d82bf81f95 Memory size: 2048MB Page Fusion: off VRAM size: 8MB CPU exec cap: 100% HPET: off Chipset: piix3 Firmware: BIOS Number of CPUs: 1 Synthetic Cpu: off CPUID overrides: None Boot menu mode: message and menu Boot Device (1): Floppy Boot Device (2): DVD Boot Device (3): HardDisk Boot Device (4): Not Assigned ACPI: on IOAPIC: off PAE: on Time offset: 0 ms RTC: local time Hardw. virt.ext: on Hardw. virt.ext exclusive: on Nested Paging: on Large Pages: off VT-x VPID: on State: running (since 2012-06-28T13:12:03.578000000) Monitor count: 1 3D Acceleration: off 2D Video Acceleration: off Teleporter Enabled: off Teleporter Port: 0 Teleporter Address: Teleporter Password: Storage Controller Name (0): SATA Controller Storage Controller Type (0): IntelAhci Storage Controller Instance Number (0): 0 Storage Controller Max Port Count (0): 30 Storage Controller Port Count (0): 30 Storage Controller Bootable (0): on Storage Controller Name (1): IDE Controller Storage Controller Type (1): PIIX4 Storage Controller Instance Number (1): 0 Storage Controller Max Port Count (1): 2 Storage Controller Port Count (1): 2 Storage Controller Bootable (1): on SATA Controller (0, 0): /root/Ubuntu_10_04_4_1_Server.vdi (UUID: a5211900-c9f8-4 ee8-b396-8ffe9ada43ba) IDE Controller (1, 0): Empty NIC 1: MAC: 080027C57C53, Attachment: Bridged Interface 'eth0', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny NIC 2: disabled NIC 3: disabled NIC 4: disabled NIC 5: disabled NIC 6: disabled NIC 7: disabled NIC 8: disabled Pointing Device: PS/2 Mouse Keyboard Device: PS/2 Keyboard UART 1: disabled UART 2: disabled Audio: disabled Clipboard Mode: Bidirectional Video mode: 640x480x0 VRDE: enabled (Address 0.0.0.0, Ports 3390, MultiConn: on, ReuseSingl eConn: off, Authentication type: null) VRDE port: 3390 Video redirection: disabled VRDE property: TCP/Ports = "3390" VRDE property: TCP/Address = <not set> VRDE property: VideoChannel/Enabled = <not set> VRDE property: VideoChannel/Quality = <not set> VRDE property: VideoChannel/DownscaleProtection = <not set> VRDE property: Client/DisableDisplay = <not set> VRDE property: Client/DisableInput = <not set> VRDE property: Client/DisableAudio = <not set> VRDE property: Client/DisableUSB = <not set> VRDE property: Client/DisableClipboard = <not set> VRDE property: Client/DisableUpstreamAudio = <not set> VRDE property: H3DRedirect/Enabled = <not set> VRDE property: Security/Method = <not set> VRDE property: Security/ServerCertificate = <not set> VRDE property: Security/ServerPrivateKey = <not set> VRDE property: Security/CACertificate = <not set> VRDE property: Audio/RateCorrectionMode = <not set> USB: disabled USB Device Filters: <none> Available remote USB devices: <none> Currently Attached USB Devices: <none> Shared folders: <none> VRDE Connection: active Clients so far: 4 Start time: 2012/06/28 15:11:51 UTC Sent: 2766202 Bytes Average speed: -1579784 B/s Sent total: 66513170 Bytes Received: 49059 Bytes Speed: -28017 B/s Received total: 102689 Bytes User name: Domain: Client name: KAMALJOSHI Client IP: 192.168.1.64 Client version: 7600 Encryption: RDP4 Guest: Configured memory balloon size: 0 MB OS type: Other Additions run level: 0 Guest Facilities: Facility "Seamless Mode": not active (last update: 2012/06/28 13:33:45 UTC) Facility "Graphics Mode": active/running (last update: 2012/06/28 13:33:45 UTC) 

VBoxpipe理列表hostonlyifs

 Name: vboxnet0 GUID: 786f6276-656e-4074-8000-0a0027000000 Dhcp: Disabled IPAddress: 192.168.23.100 NetworkMask: 255.255.255.0 IPV6Address: fe80:0000:0000:0000:0800:27ff:fe00:0000 IPV6NetworkMaskPrefixLength: 64 HardwareAddress: 0a:00:27:00:00:00 MediumType: Ethernet Status: Up VBoxNetworkName: HostInterfaceNetworking-vboxnet0 

VBoxpipe理列表bridgedifs

 Name: eth0 GUID: 30687465-0000-4000-8000-80ee7332935e Dhcp: Disabled IPAddress: 173.201.33.100 NetworkMask: 255.255.255.0 IPV6Address: fe80:0000:0000:0000:82ee:73ff:fe32:935e IPV6NetworkMaskPrefixLength: 64 HardwareAddress: 80:ee:73:32:93:5e MediumType: Ethernet Status: Up VBoxNetworkName: HostInterfaceNetworking-eth0 

ifconfig -a（ON主机）

 eth0 Link encap:Ethernet HWaddr 80:EE:73:32:93:5E inet addr:173.201.33.100 Bcast:173.201.33.255 Mask:255.255.255.0 inet6 addr: fe80::82ee:73ff:fe32:935e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3405846 errors:0 dropped:0 overruns:0 frame:0 TX packets:443817 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:578723148 (551.9 MiB) TX bytes:293187427 (279.6 MiB) Interrupt:82 Base address:0x8000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:119430 errors:0 dropped:0 overruns:0 frame:0 TX packets:119430 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:25806194 (24.6 MiB) TX bytes:25806194 (24.6 MiB) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vboxnet0 Link encap:Ethernet HWaddr 0A:00:27:00:00:00 inet addr:192.168.23.100 Bcast:192.168.23.255 Mask:255.255.255.0 inet6 addr: fe80::800:27ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:29 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:6154 (6.0 KiB) 

ifconfig -a（guest os）

lspci（guest os）

• 奇怪的ping结果：另一个设备回答ping
• VPS经常打tcpsndbuf
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• 有没有一个应用程序故意减慢连接？
• 通过VPN从本地networking路由出站连接

sudo lshw -classnetworking（来宾操作系统）

请让我知道我需要做什么？

TIA