On Sun, 21 Jan 2018 17:56:05 +0000, mm0fmf wrote:

> On 21/01/2018 15:18, Jack Fearnley wrote:
>> On Sun, 21 Jan 2018 11:11:01 +0000, The Natural Philosopher wrote:
>>
>>> On 20/01/18 20:42, Jack Fearnley wrote:
>>>> Now that I have my two RPi's up and running and accessible I have
>>>> come up with a communication problem.
>>>>
>>>> I will use ssh in the following explanation but rlogin and telnet
>>>> have similar problems.
>>>>
>>>> The wired and wireless parts of my network don't want to communicate
>>>> with each other.
>>>>
>>>> The raspberries can ssh each other over the wifi part of the network
>>>> and my two Ubuntu machines can also ssh each other over the wired
>>>> network.
>>>>
>>>> However, I cannot ssh from Ubuntu to RPi3 when RPi3 is on wifi.
>>>>
>>>> If I wire the RPi3 it can ssh to and from Ubuntu.
>>>>
>>>> All the units can ping each other so some communication is happening.
>>>>
>>>> Also, when Ubuntu (wired) tries to ssh the RPi (wifi) it gets as far
>>>> as requesting a password. the password is entered and then it hangs.
>>>> Control c does not escape the condition. I have to kill the terminal
>>>> session.
>>>>
>>>> I realise that this might not actually be a RPi problem but a more
>>>> general routing problem.
>>>>
>>>> Maybe there is some obscure setting in /etc/ssh or somewhere which
>>>> may be causing this but I have no idea where to start looking.
>>>>
>>>> Best Regards,
>>>>                Jack Fearnley
>>>>
>>>>
>>>>
>>> Most likely your router is set up to separate wired from wifi
>>> connections.
>>>
>>> Possibly has a 'guest' network on wifi that only allows internet
>>> access,
>>> not access to the wired LAN
>>
>> So, the guest network hypothesis seems to be the favorite right now.  I
>> shall study my router. It is a D-Link WBR-1310 if any of you are
>> familiar with it.
>>
>> Some additional factoids:
>>
>> If I ssh to the RPi3 and give a false password it says 'permisson
>> denied.
>> Try again'
>>
>> My main computer (Ubuntu) has wired ip address 192.168.0.101 and wifi
>> address 192.168.0.104. I CANNOT ssh from my RPi's to 192.168.0.104 even
>> though they are all on the wifi network at that point!
>>
>> Jack
>>
>>
> What does ssh -vvv  say when you try from a wired machine
> to one on wifi? And vice-versa?

it is usually a bit extreme but eventually you may need to try running
wire-shark (Possibly on both the PC & the PI) to get full indication of
what is happening on the network.





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