Adding new NIC on vbox

[termvrl]

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.

[mpack]

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

[Perryg]

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

[termvrl]

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::a00fea9:9ff0/64 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::a00fe13:6fe9/64 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 08:00:277e:2e
inet addr:10.0.4.15 Bcast:10.0.4.255 Mask:255.255.255.0
inet6 addr: fe80::a00fede: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)

[Perryg]

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.

[termvrl]

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.

[Perryg]

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?

[termvrl]

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.

[Perryg]

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.

[termvrl]

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.