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The log file on our firewall is showing a log of dropped packets and spoofs, much of which appears to be generated from internal ip addresses, the internal ips are 199.29.166.xxx (see extract below); is this an indication of virus/spyware activity on our network? We're seeing occassional slow down of internet access which led me to check these logs in the first place. Any suggestion would be greatly appreciated.
08/30/2006 13:46:11.224 UDP packet dropped 202.97.238.205, 54972, WAN 193.120.102.237, 1026, WAN 08/30/2006 13:44:16.704 IP spoof dropped 199.29.166.135, 137, LAN 199.29.166.175, 137, OPT MAC address: 00.0D.9D.D3.7D.A0 08/30/2006 13:44:12.256 UDP packet dropped 202.97.238.132, 40530, WAN 193.120.102.237, 1026, WAN 08/30/2006 13:43:16.176 IP spoof dropped 199.29.166.134, 137, LAN 199.29.166.201, 137, OPT MAC address: 00.0F.1F.46.50.8B 08/30/2006 13:43:08.016 UDP packet dropped 221.208.208.91, 59156, WAN 193.120.102.237, 1026, WAN 08/30/2006 13:41:35.304 IP spoof dropped 199.29.166.100, 137, LAN 199.29.166.201, 137, OPT MAC address: 00.04.76.8E.0F.EB 08/30/2006 13:40:27.864 IP spoof dropped 199.29.166.111, 137, LAN 199.29.166.102, 137, OPT MAC address: 00.50.DA.DF.0C.C5 08/30/2006 13:36:31.576 UDP packet dropped 171.82.233.132, 45604, WAN 193.120.102.237, 1025, WAN 08/30/2006 13:35:36.144 IP spoof dropped 199.29.166.132, 137, LAN 199.29.166.106, 137, OPT MAC address: 00.0B.CD.B2.38.F0 08/30/2006 13:34:19.160 IP spoof dropped 199.29.166.100, 137, LAN 199.29.166.247, 137, OPT MAC address: 00.04.76.8E.0F.EB 08/30/2006 13:32:47.176 IP spoof dropped 199.29.166.102, 137, LAN 199.29.166.100, 137, OPT MAC address: 00.E0.18.C3.0E.F4 08/30/2006 13:32:17.688 ICMP packet dropped 24.31.153.21, 3, WAN 193.120.102.237, 3, WAN Dest Unreachable, Code: 3
