[GRLUG] DoS Block on my local IP address

[Eric Beversluis]

On 12/28/2010 9:28 AM, Eric Beversluis wrote:
> On 12/28/2010 8:41 AM, Dan Pilcheck wrote:
>> On Tue, Dec 28, 2010 at 8:01 AM, Eric Beversluis
>> <ebever at researchintegration.org>  wrote:
>>> On 12/28/2010 7:57 AM, Ben Rousch wrote:
>>>> On Tue, Dec 28, 2010 at 7:52 AM, Eric Beversluis
>>>> <ebever at researchintegration.org>    wrote:
>>>>
>>>>> Suddenly this morning my Linux box won't reach the internet, 
>>>>> although LAN
>>>>> is
>>>>> working fine. When I look at the firewall log on my Belkin router, it
>>>>> shows
>>>>> a DoS block on the Linux box IP address. When I talk to Belkin 
>>>>> support,
>>>>> they
>>>>> say that I need to change something in the Linux box to remove the 
>>>>> block,
>>>>> not something in the Belkin wireless router.
>>>>>
>>>>> Does anyone know what would be causing this and what I need to do? 
>>>>> (I was
>>>>> trying unsuccessfully to access the Linux box by terminal server 
>>>>> client
>>>>> last
>>>>> night because of a monitor problem on the box. So I'm wondering if 
>>>>> that
>>>>> may
>>>>> have triggered some response in the Linux box that I need to undo?)
>>>>>
>>>> Is it possible that your ISP is blocking you so as to draw your
>>>> attention to a virus infection or nefarious activity emanating from
>>>> your network?
>>>>
>>> It's the private IP (192.168.2.3) that's showing blocked, and the 
>>> Windows
>>> boxes are getting out to the network fine. I don't think there's any 
>>> way for
>>> TimeWarner to block some of the boxes on my LAN but not others, is 
>>> there
>>>>
>>>>> I've tried turning the Linux firewall off an on, turning the Belkin
>>>>> firewall
>>>>> off and on, powering down and up the Belkin and the cable modem, and
>>>>> probably some other things I can't remember.
>>>>>
>>>>> Running openSUSE 11.2 on Lenovo 3000 N100.
>> I'm sure you have, but have you tried assigning a different LAN IP
>> address for the linux machine?
>>
> Update: I turned the router's DHCP off and then back on. Got new 
> IPaddr for the Linux box (...6). And that IP addr is now showing 
> "Blocked" in the router's firewall log. No Internet but still can 
> reach/ping other LAN boxes. I tried booting  from a live Ubuntu CD and 
> got to the Internet fine with that.
>
> So I'm coming back to wondering whether my trying to do remote access 
> to the box without having it properly configured to accept that could 
> have caused it to be behaving differently this morning? I don't see 
> anything in the Yast firewall settings page relevant to this (actually 
> tried with the firewall turned off, but that didn't help either).
>
> Will try router factory reset and see what that does.
>
> Thanks for all the suggestions.
>
NADA. Did factory reset etc. Still no Internet connectivity, just LAN, 
from the Lenovo Linux box.

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.