[ML-General] linux networking questions

Mon Oct 5 23:10:55 CDT 2015

I got the router setup.  It's the PC's (Linux and one Winblows) that I 
now need to also configure.
Strange that .7.2 would work already, but not .10.1.

David

On 10/05/2015 10:59 PM, James Fluhler wrote:
> I can turn on my rpi in the morning and tell your for certain; and 
> maybe I completely mis understood your question. I will also be the 
> first to admit my knowledge of advanced networking is nil. But I 
> always thought that basically you need everything in IP addresses to 
> be identical minus the last 3 numbers after the So AAA.BBB.CCC.###
>
> Now if the issue is that stock the IP address of the beagle bone or 
> rpi is not taking an address from your router; I think you can use 
> ifconfig to set the ip and subnet address.
>
> The only way I could think you could get say your pc at 192.168.1.xxx 
> to talk to 192.168.2.xxx is to have some device with two network 
> interfaces connected to both networks that will also share network 
> data between the net works. Eg you could connect a router to a router 
> thus combining networks with different IPs and different SSIDs.
>
> You could probably use your rpi to do this setting up say the wireless 
> to serve dhcp and act as an access point and the wired connected to 
> your of network, or even two wireless adapters on the rpi.
>
> Idk like is said im not an advanced networking person, I have messed a 
> little with virtual networks and I believe it's possible you could 
> connect to say 192.168.2.30 from a computer with the address 
> 192.168.1.xxx via a virtual lan. But I can't say I know exactly how to 
> do this on Linux or PC well enough to explain in an email. But I use a 
> virtual lan for connecting to the configuration IP address of a 
> wireless back haul I setup between two office buildings at work. That 
> said the back haul is connected to the same network I am on its just 
> its configuration server is on a virtual lan.
>
> Just a few thoughts maybe someone has better suggestions
>
> James F.
>
> On Oct 5, 2015, at 10:37 PM, david <ainut at knology.net 
> <mailto:ainut at knology.net>> wrote:
>
>> Appreciate the help, Hunter.  Is it not easy to have everything in 
>> the 192.168.x.x address range?  (Mask 255.255.0.0?)  I can't remember 
>> any of this but bits and pieces...
>>
>> My router and firewall to the outside world are set not to pass 
>> 192.168.x.x out to the world (as such) but I'm using all bridges 
>> internally (but there may still be one brouter in the mix; not sure.)
>>
>> Thanks,
>> David
>>
>>
>>
>> On 10/05/2015 10:32 PM, Hunter Fuller wrote:
>>>
>>> The long and the short of it is subnet masking. Basically, in home 
>>> networking, your subnet mask is almost always 255.255.255.0 also 
>>> known as a /24 (slash 24). What this means is that the first three 
>>> octets of the IPs of two devices have to be the same before they can 
>>> talk.
>>>
>>> Routers are capable of breaking this boundary, but of course your 
>>> router can only know about 192.168.1.0/24 <http://192.168.1.0/24> so 
>>> that won't help you.
>>>
>>> If the raspberry pi is handing out addresses in a different range 
>>> then you need to put your laptop in that range temporarily, log into 
>>> the pi, and reconfigure it to not do that. Unless you intend for it 
>>> to create its own separate network that is.
>>>
>>> On Oct 5, 2015 10:22 PM, "david" <ainut at knology.net> wrote:
>>>
>>>     Seems like lately I've forgotten everything I've ever known. <sigh>
>>>
>>>     I need to be able to access subnets at home; everything is
>>>     behind a firewall to the Internet.
>>>
>>>     My PC's are all dhcp in the 192.168.1.x address space.
>>>
>>>     I'd like to be able to talk to other addresses from these PC's.
>>>
>>>     Specifically:
>>>     192.168.7.2 -- Beaglebone Black default IP Address works just fine.
>>>
>>>     but
>>>
>>>     192.168.10.1 -- particular RPi 2 address from downloaded image
>>>     does not.  Of course, that Pi is a wireless one, while if I turn
>>>     off the wireless and connect a house cable, it gets assigned
>>>     192.168.1.56 (for example) and that works fine.  BUT, the wifi
>>>     address is still not accessible unless I make the wifi laptop
>>>     get on the RPi 2 as it's dhcp server and then the laptop gets
>>>     assigned 192.168.10.x. <sigh>  (Same for the Android tablet.) 
>>>     How do I get everything to play nice with each other?
>>>
>>>     Bought a NAS server and set it's address to 192.168.200.1 -- and
>>>     *nothing* in the house could see it until I changed it's address
>>>     to a 192.168.1.x.
>>>
>>>     Help, please.
>>>
>>>     Thanks,
>>>     David Merchant
>>>
>>>
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