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* Lewis G Rosenthal wrote, On 2/9/2007 5:43 PM:
> If you're browsing or checking or sending email, UDP 53 will be in
> constant use (unless you have such a huge hosts file that lookups are
> unnecessary). You really need to debug the DNS requests to determine
> what it's trying to find, and that should give you some clue as to
> what's asking.
Hi Lewis...but this is from my OS?2 machine which all it is doing is
processing mail every five minutes. All those NAT sessions seem way too
many for what should be going on....

Leon
>
> IPTRACE won't give you enough detail. You'll need something which will
> list the UDP packets on port 53 and their contents in order to
> determine what is being requested.
>
> On 02/09/07 12:34 pm, Leon D. Zetekoff thus wrote :
>> yes the 192...100 is the os2 box on my internal network. It is NATed
>> by the router. Yes port 53 is DNS but OS2 for some reason is chatting
>> away. Guess I'll get a task list and see what's in there. The 199.224
>> address is one of the DNS servers of my provider.
>>
>> Thanks leon
>>
>> * Sam Lewis wrote, On 2/9/2007 12:25 PM:
>>> It's probably the port NAT is using to forward packets. Here is a
>>> link to an explanation of how NAT works. It may explain this better.
>>>
>>> http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094831.shtml#flash
>>>
>>>
>>> Sam
>>>
>>> Leon D. Zetekoff wrote:
>>>
>>>> Sorry for the crosspost but trying to get an answer...thanks leon
>>>>
>>>> ====================
>>>>
>>>> It seems my os/2 box likes to talk out to port 53. Check out this from
>>>> my router:
>>>>
>>>> Page 40/40
>>>> Internal Prot. External NAT Time-out
>>>> 192.168.0.100:54692 UDP 199.224.86.16:53 65159 153
>>>> 192.168.0.100:54713 UDP 199.224.86.16:53 65191 159
>>>> 192.168.0.100:54800 UDP 199.224.86.16:53 65215 195
>>>> 192.168.0.100:54779 UDP 199.224.86.16:53 65239 186
>>>> 192.168.0.100:54562 UDP 199.224.86.16:53 65261 103
>>>> 192.168.0.100:54477 UDP 199.224.86.16:53 65263 63
>>>> 192.168.0.100:54967 UDP 199.224.86.16:53 65271 266
>>>> 192.168.0.100:54387 UDP 199.224.86.16:53 65299 39
>>>> 192.168.0.100:54758 UDP 199.224.86.16:53 65331 177
>>>> 192.168.0.100:54336 UDP 199.224.86.16:53 65335 14
>>>> 192.168.0.102:1803 UDP 199.224.86.20:53 65357 214
>>>> 192.168.0.100:54527 UDP 199.224.86.16:53 65361 86
>>>> 192.168.0.100:54509 UDP 199.224.86.16:53 65405 80
>>>> 192.168.0.100:54383 UDP 199.224.86.16:53 65409 39
>>>> 192.168.0.100:54649 UDP 199.224.86.16:53 65423 141
>>>> 192.168.0.100:55015 UDP 199.224.86.16:53 65431 274
>>>> 192.168.0.100:54877 UDP 199.224.86.16:53 65433 229
>>>> 192.168.0.100:54732 UDP 199.224.86.16:53 65437 167
>>>> 192.168.0.100:54898 UDP 199.224.86.16:53 65453 239
>>>>
>>>>
>>>> 192.168.0.100 is the os2 box any idea why it chatters so much?
>>>>
>>>> Thanks leon
>>>>
>>>>
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>>>
>>>
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>

--
*Leon Zetekoff*
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