IPv4 Address Sharing Issue? Trying to map IPv4 address from host OS to BT5 VM [closed]

I'm having a general networking issue in regards to my Backtrack 5 (x64) KDE VM in VirtualBox. The VM appears to be on a separate subnet, but for my purposes, I'd like to include the VM in the private class C network (192.168.x.x).

Do you know why the VM is using a Class B private address as opposed to a Class C? My understanding with NAT is that the system would use a single IPv4 address to connect the virtual machine to the network.

How can I change the VM config. so that I can access the 192.168.x.x subnet?

Technical details of VM/network config.

• Using NAT adapter from Virtualbox to communicate w/LAN
• Nmap scan of 10.0.2.1-254 returns 5 active hosts on LAN

I'm trying to:

• Use nmap to perform a scan of the 192.168.2.x subnet

The issue:

• Can only scan LAN if querying 10.0.2.1-254, shouldn't I be querying 192.168.2.1-254? Command used: nmap -sP 10.0.2.1-254

Windows 7 x64 (Host)

Windows IP Configuration
...
   Physical Address. . . . . . . . . : EC-55-F9-C8-67-38
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::f9cc:d2f8:a30d:15b0%12(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.2.4(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.2.1
   DHCP Server . . . . . . . . . . . : 192.168.2.1

Backtrack 5 VirtualBox VM (Guest)

root@bt:~# ifconfig eth0
eth0      Link encap:Ethernet HWaddr 08:00:27:40:ed:f7
          inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe40:edf7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          ...

Instead of NAT, use bridge adapter. If your Host (Win) is getting IP through DHCP then your vm (bt) will also get IP through the same source.

Hope it helps.