Re: [gentoo-user] [OT] Mysterious vanishing of DNS entry of www.youtube.com...was I hacked?

[bitlord <bitlord0xff@gmail.com>]

On Tue, 10 Mar 2015 19:16:12 +0100
Meino.Cramer@gmx.de wrote:

> Hi,
> 
> the following happens some minutes before:
> I was searching on youtube for some reviews...
> and suddenly BOOM: "Server not found: Unknow host"
> 
> I restarted firefox...which did not help.
> 
> I did a ping & traceroute to www.youtube.com from
> the commandline...same results...
> 
> Wireshark shows the DNS query to my DSL modem...
> and the answer was that from above.
> 
> I rebooted my Gentoo box...no help...
> 
> The problem vanishes as I powercycled my DSL modem.
> 
> Any other access was working the whole time.
> 
> Was my DSL modem hacked?
> Does anyone else noticed a glithc in the matrix?
> 
> Best regards,
> mcc
> 
> 

Today everyone can make a dsl router/modem, and ISPs when they
give you equipment they want it to be cheap. I saw exactly the same
problem on cheap dsl routers, I don't have enough knowledge to debug
it, or to be sure if it is safe or not, it worked for months with no
issues, no reboots ..., one day it stopped working/resolving hosts, and
its dhcp server config doesn't allow "forwarding" of DNS servers from
WAN configuration, or manually setting one which will be given to the
dhcp "clients", so there are two ways, it can work as a proxy (send
its own IP as DNS server to clients), or it doesn't provide DNS, so you
need manually to configure each client.
If you restart the router, it works sometimes for few hours, sometimes
few days, but it will fail again randomly. 
The only worrying thing is that it worked for months without an issue.