Re: [OT] port 53
On Sun, Jul 1, 2012 at 11:52 PM, Camaleón <noelamac@gmail.com> wrote:
> On Sun, 01 Jul 2012 23:26:58 +0800, lina wrote:
>
>> (1) What shall I do if lots of foreign address connected to my port 53
>> (details see the bottom),
>
> If you are serving DNS requests, that's normal...
>
>> (2) ssh: Could not resolve hostname at the same time.
>
> What?!
It's very nice of you "being around".
My knowledge about those things is very vulnerable, so there is no
surprise many times I did some illiterate guessing.
Thanks, still can't resolve the hostname. Perhaps will wait for Monday
and contact someone.
I did configure the exim4 and hours ago was a bit happy about that.
Now it still does not work after purging the exim4.
BTW, any suggestions about how to examine are sincerely welcome.
Best regards,
>
>> (3) Seems it's initiated by iceweasle.
>>
>> I am not experienced, thanks ahead for any suggestions.
>>
>> 128.8.10.90#53
>
> sm01@stt008:~$ host 128.63.2.53
> 53.2.63.128.in-addr.arpa domain name pointer h.root-servers.net.
>
>> 208.93.136.12#53
>
> sm01@stt008:~$ host 208.93.136.12
> 12.136.93.208.in-addr.arpa domain name pointer DNS12.CTNDO.NET.
>
>> 2001:dc3::35#53
>> 192.58.128.30#53
>
> sm01@stt008:~$ host 192.58.128.30
> 30.128.58.192.in-addr.arpa domain name pointer j.root-servers.net.
>
> (...)
>
> Now you know how it works :-)
>
>> 216.239.32.10#53
>
> sm01@stt008:~$ host 216.239.38.10
> 10.38.239.216.in-addr.arpa domain name pointer ns4.google.com.
>
> Re-think a bit what's your system configuration. You should be running a
> DNS server by some reason and it should have been setup for someone... if
> you are completely unaware of this situation, ask to your network/system
> administrator about this.
>
> Greetings,
>
> --
> Camaleón
>
>
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