[ML-General] linux networking questions

[James Fluhler]

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> 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 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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