La mia connessione a banda larga a casa è stata attiva e disattivata tutto il giorno, ho dato un'occhiata ai log del router e ho visto quanto segue:
Mar 27 12:22:30 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=92.48.122.218 DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=123 ID=64889 PROTO=TCP SPT=23431 DPT=3306 WINDOW=65535 RES=0x00 SYN U
Mar 27 12:36:57 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=78.101.248.169 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=119 ID=13193 DF PROTO=TCP SPT=58734 DPT=51413 WINDOW=8192 RES=0x00 S
Mar 27 12:39:47 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=78.101.248.169 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=119 ID=16952 DF PROTO=TCP SPT=59817 DPT=51413 WINDOW=8192 RES=0x00 S
Mar 27 12:51:23 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=69.50.194.41 DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=118 ID=14530 PROTO=TCP SPT=35855 DPT=22 WINDOW=65535 RES=0x00 SYN URGP
Mar 27 13:09:25 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=222.186.52.77 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=97 ID=256 PROTO=TCP SPT=6000 DPT=1433 WINDOW=16384 RES=0x00 SYN URGP=
Mar 27 13:32:24 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=203.156.207.196 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=96 ID=256 PROTO=TCP SPT=6000 DPT=1000 WINDOW=16384 RES=0x00 SYN URG
Mar 27 13:45:58 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=60.12.160.66 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=104 ID=256 PROTO=TCP SPT=46684 DPT=1433 WINDOW=16384 RES=0x00 SYN URGP
Mar 27 14:25:37 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=85.114.129.177 DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=121 ID=3057 PROTO=TCP SPT=8473 DPT=3389 WINDOW=65535 RES=0x00 SYN UR
Mar 27 15:04:52 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=60.173.14.89 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=99 ID=256 PROTO=TCP SPT=6000 DPT=8909 WINDOW=16384 RES=0x00 SYN URGP=0
Mar 27 15:28:40 kernel: eth3 Link UP 100 mbps full duplex
Mar 27 15:28:50 kernel: eth3 Link DOWN.
Mar 27 15:28:51 kernel: eth3 Link UP 100 mbps full duplex
Mar 27 15:30:25 kernel: eth3 Link DOWN.
Mar 27 15:45:12 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=124.119.118.223 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=100 ID=47265 PROTO=TCP SPT=6000 DPT=3389 WINDOW=16384 RES=0x00 SYN
Mar 27 16:02:39 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=2.95.45.184 DST=x.x.x.x LEN=64 TOS=0x00 PREC=0x00 TTL=42 ID=34542 DF PROTO=TCP SPT=1583 DPT=135 WINDOW=53760 RES=0x00 SYN URG
Mar 27 16:06:11 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=58.194.171.217 DST=x.x.x.x LEN=60 TOS=0x00 PREC=0x00 TTL=45 ID=61983 DF PROTO=TCP SPT=52273 DPT=3389 WINDOW=5840 RES=0x00 SYN
Mar 27 16:09:45 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=2.192.224.130 DST=x.x.x.x LEN=64 TOS=0x00 PREC=0x00 TTL=31 ID=14217 DF PROTO=TCP SPT=1052 DPT=445 WINDOW=65535 RES=0x00 SYN U
Mar 27 16:46:01 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=24.64.84.167 DST=x.x.x.x LEN=64 TOS=0x00 PREC=0x00 TTL=48 ID=29798 DF PROTO=TCP SPT=59723 DPT=51413 WINDOW=65535 RES=0x00 SYN
Mar 27 16:46:03 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=24.64.84.167 DST=x.x.x.x LEN=64 TOS=0x00 PREC=0x00 TTL=48 ID=2404 DF PROTO=TCP SPT=59723 DPT=51413 WINDOW=65535 RES=0x00 SYN
Mar 27 16:59:48 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=61.176.192.164 DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=104 ID=256 PROTO=TCP SPT=6000 DPT=1433 WINDOW=16384 RES=0x00 SYN URG
Mar 27 17:28:42 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=89.119.20.254 DST=x.x.x.x LEN=60 TOS=0x00 PREC=0x00 TTL=54 ID=6972 DF PROTO=TCP SPT=3522 DPT=23 WINDOW=5840 RES=0x00 SYN URGP
Mar 27 17:29:28 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=122.176.158.232 DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=120 ID=2025 DF PROTO=TCP SPT=13851 DPT=443 WINDOW=65535 RES=0x00 SY
Mar 27 17:29:29 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=72.48.98.17 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=118 ID=14331 DF PROTO=TCP SPT=52695 DPT=10261 WINDOW=8192 RES=0x00 SYN
Mar 27 17:29:31 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=122.176.158.232 DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=120 ID=2030 DF PROTO=TCP SPT=13851 DPT=443 WINDOW=65535 RES=0x00 SY
Mar 27 17:29:32 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=72.48.98.17 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=118 ID=14805 DF PROTO=TCP SPT=52695 DPT=10261 WINDOW=8192 RES=0x00 SYN
Mar 27 17:29:34 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=110.23.234.109 DST=x.x.x.x LEN=64 TOS=0x00 PREC=0x00 TTL=49 ID=36150 DF PROTO=TCP SPT=53042 DPT=55802 WINDOW=65535 RES=0x00 S
Mar 27 17:35:36 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=86.68.142.70 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=115 ID=11838 DF PROTO=TCP SPT=49527 DPT=55802 WINDOW=8192 RES=0x00 SYN
Mar 27 17:35:39 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=79.175.234.127 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=114 ID=4333 DF PROTO=TCP SPT=49424 DPT=80 WINDOW=8192 RES=0x00 SYN U
Mar 27 17:47:42 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=68.83.96.247 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=113 ID=9254 DF PROTO=TCP SPT=60863 DPT=55802 WINDOW=8192 RES=0x00 SYN
Mar 27 17:47:43 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=87.68.235.165 DST=x.x.x.x LEN=60 TOS=0x00 PREC=0x00 TTL=54 ID=38465 DF PROTO=TCP SPT=64092 DPT=80 WINDOW=5840 RES=0x00 SYN UR
Mar 27 17:47:45 kernel: Intrusion -> IN=atm1 OUT= MAC=34:08:04:00:08:35:18:80:f5:97:9e:98:08:00 SRC=213.130.198.69 DST=x.x.x.x LEN=52 TOS=0x00 PREC=0x00 TTL=44 ID=9364 DF PROTO=TCP SPT=3486 DPT=443 WINDOW=65535 RES=0x00 SYN U
L'indirizzo IP che l'attacco proviene ogni volta da modifiche, ma il MAC no. È rilevante? Da quanto sopra, tutto quello che posso leggere è l'indirizzo IP e il fatto che si tratta di un evento di intrusione del kernel. C'è più informazioni qui che mi manca? Qual è il mio rischio per questo, se si tratta di una sorta di attacco?