CentOS Networking with V Box

sean sean.a.ritzler at gmail.com
Wed Feb 4 09:19:20 MST 2015


Are you sure that it was bridged at Starbucks and not nat'd? What's the
wifi chip? Not all have support for being bridged.
On Feb 4, 2015 9:09 AM, "Michael Torres" <matorres124 at gmail.com> wrote:

> Yes it has both ...its a laptop.  I hear what your saying but i have a
> hard time wrapping my head around the fact that my wireless card will
> communicate with starbucks router..but not mine.   I am going to try and
> reconfigure. My linksys router.... i have to factory reset it as i forgot
> the password.
> On Feb 4, 2015 8:36 AM, "Michael Butash" <michael at butash.net> wrote:
>
>> I don't use Cent ever, but if it's anything like Ubuntu, you get either
>> a) network interfaces file ala sysconfig scripts in rh derivatives or b)
>> NetworkManager controlling everything, but not both.  If NM is running your
>> stack, than it's likely ignoring those configurations as it contains all
>> that in dbus and /etc/NetworkManager or like.
>>
>> If that is a wireless nic, I still think the wireless isn't giving you
>> another address, and likely won't in all cases.  Reason is typically
>> wireless is meant to have a single client per security association.  This
>> is usually controllable to some aspect. There's a reason to prevent this -
>> someone bridging their laptop to strong encrypted wireless, and
>> representing it via old wep or like I can crack with my phone.  Might work
>> at home, but don't always expect that to work in more strict environments.
>>
>> Does the system have a wired nic on it?  Have you tested with that?
>>
>> If you want to see the transaction, "tcpdump -i enp0s3 port 67 or port
>> 68" that "outside" interface and see if you see the dhcp packet leave the
>> wireless.  If you get no response, your router/ap doesn't like another
>> request.  If not leaving that interface, it's a local system issue.
>>
>> Packets on the wire trump all, see if there are any.
>>
>> -mb
>>
>>
>> On 02/04/2015 01:07 AM, Michael Torres wrote:
>>
>>> I didnt think that was the reason. just for the simple fact that  I was
>>> connected wirelessly at Starbucks......their router assigned me an IP
>>> address using the enp0s3 file.
>>>
>>> anyways,  I removed the device and reinstalled, still the same thing.  I
>>> still think its a setting in my router or perhaps Windows strikes again and
>>> there is something in the Network Manager that I dont understand.
>>>
>>> How frustrating.....anyways, thanks for the help, if you think of
>>> anything else, please let me know.
>>>
>>> Going to bed now..
>>>
>>>
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