[ML-General] linux networking questions
david
ainut at knology.net
Tue Oct 6 13:07:05 CDT 2015
Using ssh, it asks for password but neither 'raspberry' nor blank
works. I tried as root and as 'pi' and as 'Pi'.
UPDATE: 'pi' with 'raspberry' works now for ssh! This is definitely weird.
And, both wifi and wired are working simultaneously. Whoever made this
image was thinking ahead. Kudos to them.
If I can just figure out why it only works sometimes... :)
David
On 10/06/2015 01:00 PM, Hunter Fuller wrote:
>
> Do you at least get a password prompt? If not, what error?
>
> On Oct 6, 2015 12:58 PM, "david" <ainut at knology.net
> <mailto:ainut at knology.net>> wrote:
>
> All my machines are Linux/UNIX/IRIX, except the one (mandatory)
> Winblows box, which is a laptop.
> 3 desktops (one of which apparently won't run Linux more than 48
> hours, using AMD 83xx or 93xx processor) and 6 SoC's, not
> including Arduino's or tv servers.
>
> Good catch about nmap! It verified the RPi address. I still
> can't ssh into it, even though it is not supposed to have any
> passwords...
>
> Thanks,
> David Merchant
>
>
>
> On 10/06/2015 12:25 PM, Michael Patton wrote:
>> https://www.raspberrypi.org/documentation/troubleshooting/hardware/networking/ip-address.md
>>
>>
>> do you have another linux device? If so, you can use nmap to
>> discover the connections on the network - one of which is
>> hopefully your pi.
>>
>> I'm not sure what too you could use for windows, but there has to
>> be one: arp -a maybe?
>>
>> I had SEVERE problems with my pi working on a network -- because
>> the cat5 cable I had was a POS. Once I swapped it out, all of the
>> problems I had with the pi disappeared.
>>
>> don't kick puppies. :)
>>
>>
>> On Tue, Oct 6, 2015 at 11:05 AM, david <ainut at knology.net
>> <mailto:ainut at knology.net>> wrote:
>>
>> I can't get into the RPi 2. Bah. Just downloaded a new
>> image to an SD card and I cannot ssh.
>> Can't login direct because I can't find the stupid small
>> HDMI-normal HDMI cable now. Keyboard and mouse are connected
>> via USB hub but I can't see the output. Grrrr.
>>
>> I don't know if this new image uses a static IP for itself
>> but I think so. It *should* be at 192.186.10.1 on wireless
>> but can't find out it's address on wired.
>>
>> Think I'll go out and kick some puppies.
>>
>> David
>>
>>
>>
>>
>>
>> On 10/06/2015 08:28 AM, Michael Patton wrote:
>>> I'm late to the game but are you still having problems?
>>>
>>> I had issues with my rpi last year and dhcp not working blah
>>> blah.
>>>
>>> What does your: sudo cat /etc/network/interfaces say?
>>>
>>> Have you set up the static IP in there?
>>>
>>> Sorry if you answered this already and I'm assuming you have
>>> -- I need more coffee.
>>>
>>> On Mon, Oct 5, 2015 at 11:10 PM, david <ainut at knology.net
>>> <mailto:ainut at knology.net>> wrote:
>>>
>>> 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
>>>>>> <mailto: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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