Jak poznat, že se děje něco nekalého v síti přes WIFI router

Zdravím, mám net přes router. Občas se někdo připojí a v security logu se zobrazují různé hlášky. Kdy se mám začít strachovat, že se děje něco nekalého. Třeba teď mi tam vyskakují hlášky:

2009-01-22 09:12:01 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 09:12:00 *IP Spoofing* 192.168.2.101, 0->> 239.255.255.250, 0 (from WAN Inbound)
2009-01-22 09:09:58 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 09:07:57 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 09:06:54 *IP Spoofing* 192.168.2.101, 138->> 192.168.2.255, 138 (from WAN Inbound)
2009-01-22 09:06:44 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:41 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:38 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:36 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:36 *IP Spoofing* 192.168.2.101, 138->> 192.168.2.255, 138 (from WAN Inbound)
2009-01-22 09:06:35 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:33 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:32 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:31 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:06:30 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 09:05:49 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 09:03:44 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 09:01:54 *IP Spoofing* 192.168.2.101, 138->> 192.168.2.255, 138 (from WAN Inbound)
2009-01-22 09:01:37 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22… 08:59:35 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 08:59:29 *IP Spoofing* 192.168.2.101, 0->> 239.255.255.250, 0 (from WAN Inbound)
2009-01-22 08:59:14 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:12 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:11 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:09 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:08 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:07 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:59:06 *IP Spoofing* 192.168.2.101, 1900->> 239.255.255.250, 1900 (from WAN Inbound)
2009-01-22 08:56:54 *IP Spoofing* 192.168.2.101, 138->> 192.168.2.255, 138 (from WAN Inbound)
2009-01-22 08:55:54 *IP Spoofing* 192.168.2.101, 138->> 192.168.2.255, 138 (from WAN Inbound)
2009-01-22 08:55:22 *IP Spoofing* 192.168.2.101, 0->> 224.0.0.252, 0 (from WAN Inbound)
2009-01-22 08:55:19 *IP Spoofing* 192.168.2.101, 0->> 239.255.255.250, 0 (from WAN Inbound)
2009-01-22 08:55:15 *IP Spoofing* 192.168.2.101, 63188->> 239.255.255.250, 1900 (from WAN Inbound)

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