Lots of strange IP addresses in my Windows Firewall logs. Concern?
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by gmoore
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Published on 2009-12-21T15:07:28Z
Indexed on
2010/05/25
16:21 UTC
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Hit count: 273
Was trying to debug a Samba sharing issue with Mac OS X so I turned on logging for my Windows Firewall. I didn't expect a lot of conections but the thing filled up quickly. Here's a sample:
2009-12-21 08:49:32 OPEN-INBOUND TCP 192.168.0.4 192.168.0.3 56335 139 - - - - - - - - -
2009-12-21 08:49:33 OPEN-INBOUND TCP 192.168.0.4 192.168.0.3 56337 139 - - - - - - - - -
2009-12-21 08:50:02 OPEN UDP 192.168.0.3 68.87.73.242 1389 53 - - - - - - - - -
2009-12-21 08:50:02 CLOSE TCP 192.168.0.3 212.96.161.238 1391 80 - - - - - - - - -
2009-12-21 08:50:02 OPEN UDP 192.168.0.3 68.87.71.226 60290 53 - - - - - - - - -
2009-12-21 08:50:02 OPEN TCP 192.168.0.3 212.96.161.238 1391 80 - - - - - - - - -
2009-12-21 08:50:02 OPEN TCP 192.168.0.3 212.96.161.238 1393 80 - - - - - - - - -
2009-12-21 08:50:04 CLOSE TCP 192.168.0.3 212.96.161.238 1393 80 - - - - - - - - -
2009-12-21 08:50:41 CLOSE UDP 192.168.0.3 192.168.0.4 137 50300 - - - - - - - - -
I can pick out the local IP addresses (192.168.0.3 is my Windows XP machine, 192.169.0.4 is Mac OS X) as I debug the Samba issue. But some of the others resolve to Comcast (my ISP) and others resolve to weird hosts like van-dns.com and navisite.net. It doesn't look like any connection sent/received any bytes. I used the reference here: http://technet.microsoft.com/en-us/library/cc758040%28WS.10%29.aspx.
Is it a cause for concern?
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