labmonkey
Posts: 3
Joined: Mon Sep 23, 2013 6:34 am
Location: Tokyo, Japan

Network problems

Mon Sep 23, 2013 7:01 am

Hello,

I'm kind of new to the raspberry pi, so forgive me if this post is unclear.
Firstly the background: A while ago I had my raspberry pi up and running no problem with both raspbian and raspbmc, however, after not using it for a long time for some reason the SD card needed re-formatting. So, I re-installed raspbian and everything is ok except I have a network problem.
Currently I can access the internet (wirelessly) from the raspberry pi using the Midori browser.
So far, so good.
However, I would like to access the pi remotely, e.g. using Putty.
When I try this I get
Network Error: Connection Timed Out
Does anybody know why I would get this error? Do I need to change some settings/install something new on the raspberry pi

I tried to ping the raspberry pi directly from my laptop, but I get this reply
Reply from xxx.xxx.xx.x: Destination host unreachable
(the IP address here is, I think, my laptop's.)

I assumed that because I can access the internet from the raspberry pi, I must be able to ping it.

Many months ago, before I reinstalled raspbian, I had no problem using Putty, so I can't see how it's a hardware issue.

I've tried everything I can think of, so if anybody could at least point me in the right direction, I would be really appreciative.

itimpi
Posts: 1084
Joined: Sun Sep 25, 2011 11:44 am
Location: Potters Bar, United Kingdom
Contact: Website

Re: Network problems

Mon Sep 23, 2013 6:59 pm

You might need to check your router settings. Some routers default to blocking connections between devices on the LAN particularly when they are both wifi connected.

labmonkey
Posts: 3
Joined: Mon Sep 23, 2013 6:34 am
Location: Tokyo, Japan

Re: Network problems

Thu Sep 26, 2013 5:07 am

Thanks.
Any idea what type of router settings it could be?
(To make things more complicated, the router is in Japanese, so my wife will have to translate for me.)
I find it kind of odd that it could be the router. The raspberry pi was working fine a few months ago and we definitely haven't changed any router settings since then.
Anyway, I will soon check it out and post the result here.

labmonkey
Posts: 3
Joined: Mon Sep 23, 2013 6:34 am
Location: Tokyo, Japan

Re: Network problems

Tue Oct 22, 2013 1:14 pm

A rather embarrassing update. To cut a long story short, turning my router on and off again seems to have resolved my network problems. I haven't checked my raspberry pi yet (a job for the weekend), but I think it should now be ok.

There's a moral hidden here I think: no matter how many settings you check, no matter how much you search the internet for solutions, no matter how many forums you post in to desperately ask for help - nothing beats "turning it off and on again".

I cannot believe how much time I wasted when there was an obvious solution :roll:

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