virtualbox.org

Hi All,
Good Day!

i trying to add another eth on my ubuntu 12.04 machine. i install vbox on windows7.
i set eth0 and eth1 connect using bridged adapter, both cannot go to internet.
when i try to add another new nic using NAT adapter, i cannot connect to internet too.(i add this eth2 while the machine running)

i have another ubuntu machine running using NAT and can go to internet.
i need your guide to understand networking in vbox and troubleshoot my problem.

Thanks.

Moving to "Linux Guests" since none of your questions concern your "Windows Host".

Post the results of ifconfig -a from the Ubuntu guest.

HI Perryg,

This is my ifconfig -a

root@ubuntu:~# ifconfig -a
eth0 Link encap:Ethernet HWaddr 08:00:27:a9:9f:f0
inet addr:192.168.1.20 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00

fea9:9ff0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:814 errors:0 dropped:0 overruns:0 frame:0
TX packets:1345 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:60256 (60.2 KB) TX bytes:151159 (151.1 KB)

eth1 Link encap:Ethernet HWaddr 08:00:27:13:6f:e9
inet6 addr: fe80::a00

fe13:6fe9/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:43061 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:35326942 (35.3 MB) TX bytes:468 (468.0 B)

eth2 Link encap:Ethernet HWaddr 08:00:27

7e:2e
inet addr:10.0.4.15 Bcast:10.0.4.255 Mask:255.255.255.0
inet6 addr: fe80::a00

fede:7e2e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1180 (1.1 KB) TX bytes:1152 (1.1 KB)

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:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:444 (444.0 B) TX bytes:444 (444.0 B)

From the hosts terminal/command window type VBoxManage showvminfo <VM Name> --details and post here. Replace <VM Name> with the actual name of the VM. Use " " if the name has a space in it.

Note if the host is Windows you need to be in the directory that has VBoxManage.exe for the command to work.

hi
this is my "VBoxManage showvminfo Ubuntu1 --details"

Code: Select all

C:\Program Files\Oracle\VirtualBox>VBoxManage showvminfo Ubuntu1 --details
Name:            Ubuntu1
Guest OS:        Ubuntu (64 bit)
UUID:            5abf96f4-c4d2-4c92-b1de-05551fcbc6aa
Config file:     C:\Users\Termvrl\VirtualBox VMs\Ubuntu1\Ubuntu1.vbox
Snapshot folder: C:\Users\Termvrl\VirtualBox VMs\Ubuntu1\Snapshots
Log folder:      C:\Users\Termvrl\VirtualBox VMs\Ubuntu1\Logs
Hardware UUID:   5abf96f4-c4d2-4c92-b1de-05551fcbc6aa
Memory size:     1024MB
Page Fusion:     off
VRAM size:       12MB
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:          on
PAE:             off
Time offset:     0 ms
RTC:             UTC
Hardw. virt.ext: on
Hardw. virt.ext exclusive: off
Nested Paging:   on
Large Pages:     on
VT-x VPID:       on
State:           powered off (since 2012-10-07T15:47:02.000000000)
Monitor count:   1
3D Acceleration: off
2D Video Acceleration: off
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address:
Teleporter Password:
Storage Controller Name (0):            IDE Controller
Storage Controller Type (0):            PIIX4
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0):  2
Storage Controller Port Count (0):      2
Storage Controller Bootable (0):        on
Storage Controller Name (1):            SATA Controller
Storage Controller Type (1):            IntelAhci
Storage Controller Instance Number (1): 0
Storage Controller Max Port Count (1):  30
Storage Controller Port Count (1):      1
Storage Controller Bootable (1):        on
IDE Controller (1, 0): Empty
SATA Controller (0, 0): C:\Users\Termvrl\VirtualBox VMs\Ubuntu1\IDS on VBox.vdi (UU
ID: 99defed6-cd9f-48a4-8540-78dadd26579b)
NIC 1:           MAC: 080027A99FF0, Attachment: Bridged Interface 'Atheros AR928
5 Wireless Network Adapter', Cable connected: on, Trace: off (file: none), Type:
 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny
NIC 2:           MAC: 080027136FE9, Attachment: Bridged Interface 'Atheros AR928
5 Wireless Network Adapter', Cable connected: on, Trace: off (file: none), Type:
 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all
NIC 3:           MAC: 080027DE7E2E, Attachment: NAT, Cable connected: on, Trace:
 off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Prom
isc Policy: deny
NIC 3 Settings:  MTU: 0, Socket (send: 64, receive: 64), TCP Window (send:64, re
ceive: 64)
NIC 4:           disabled
NIC 5:           disabled
NIC 6:           disabled
NIC 7:           disabled
NIC 8:           disabled
Pointing Device: USB Tablet
Keyboard Device: PS/2 Keyboard
UART 1:          disabled
UART 2:          disabled
Audio:           enabled (Driver: DSOUND, Controller: AC97)
Clipboard Mode:  Bidirectional
VRDE:            disabled
USB:             enabled
USB Device Filters:
<none>
Available remote USB devices:
<none>
Currently Attached USB Devices:
<none>
Shared folders:  <none>
VRDE Connection:    not active
Clients so far:     0
Guest:
Configured memory balloon size:      0 MB
OS type:                             Ubuntu_64
Additions run level:                 0
Guest Facilities:
No active facilities.

Nic1 = Bridged eth0 192.168.1.20
Nic2 = Bridged eth1 (no config)
Nic3 = Nat eth2 10.0.4.15

It appears that you need to configure the second Nic. Can you explain to me what you are trying to achieve?

hi
i setup ids on this machine.
nic1 is for the management port. i use another pc on the 192 segment to monitor the ids.
nic2 is for the sniffing port. i set it to promisc mode in order to "listen" to all traffic.

because of my 192 segment dont connect to the internet, i decide to add another nic to connect to 10 segment.
so that i can connect to the internet.

Nic1 = Bridged eth0 192.168.1.20
Nic2 = Bridged eth1 (no config)
Nic3 = Nat eth2 10.0.4.15

is it possible to me to do like that?
please advice if you have other way to do it.
Thanks.

Intrusion detection will work with the one Bridged Nic set to promiscuous mode and the ids set to stealth
Anyway this would be a question for the snort (or what ever it is you are using) folks.
I seriously doubt that the VBox Nat is what you want to use as that will block all incoming connections, but that is something you would need to check.

Thanks for your response.
I will check it later.
If i add the nic while the virtual machine is still running, is it will be a conflict to the vbox?
because i always add/remove or change the network setting of vbox while the virtual machine still on.
i worry that will be the cause.

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