David Murphy wrote:
> --- Stefan Lesicnik <[EMAIL PROTECTED]> wrote:
>
>   
>> Hi Guys,
>>
>> I am new to VirtualBox. I was using Vmware, and due to a number of
>> issues (timing, crashing, io related) decided to give VirtualBox a try,
>> and I am very impressed. System is nice and responsive. (Although this
>> morning under heavy load, i did get crashes and I am still
>> investigating. Adding nohz=off to kernel of guest has seem to improve
>> things)
>>
>> The question I have is about the networking. With bridged networking on
>> vmware, it worked, so I just want to see what I am missing.
>>     
>
> <snip>
>
>   
>> From the guest, i can access the internal machines no problem. The
>> problem comes in when trying to use a DNAT on the firewall (running on
>> the guest).  The connection just never goes through. I am not sure where
>> it does actually go.
>>
>> The other thing i've noticed is that people that are connecting to
>> server from internal, appear as if they come from the virtual host box's
>> bridged ip. Is this normal behaviour?
>>     
Hi everyone,

Just to let you know its solved. The kernel upgrade of the host from 
2.6.20-16 to 2.6.22.14 on Ubuntu Gutsy seemed to do the job. It's 
defiently bridging correctly now with the guest reporting connections as 
coming from the proper hosts.

Two other I learnt here that may be of use.  If you are doing iptables 
and pppoe inside the guest, you must add this to your /etc/sysctl.conf

net.bridge.bridge-nf-filter-pppoe-tagged=0
net.bridge.bridge-nf-call-iptables=0

Thats essentialy the bridge filter that filters that traffic is set to 
1  (thats default)

The other thing was the creation of the interface in /etc/network/interfaces

auto br0
iface br0 inet static
address 193.168.87.250
netmask 255.255.255.0
bridge_ports eth0
up /sbin/ifconfig eth0 inet 0.0.0.0 promisc

I didnt know how to do the promisc mode automatically. The above line is it.

So, thanks to those that responsed.

Virtualbox performance has been awesome and I am def. a vmware convert.

Stefan

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