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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