내 시스템 로그를 보면 그 중 99%가 3개 또는 4개 IP의 UFW BLOCK 문으로 구성되어 있음을 알 수 있습니다(아래 참조, 공간 편집). 이게 정상인가요? 이 항목은 무엇을 의미합니까? 안전하다면 어떻게 수정하거나 로그에 기록되지 않도록 방지할 수 있습니까? 이 문제를 검색해 보니 멀티캐스트와 관련이 있는 것 같은데 제가 아는 바는 없습니다. UDP용 224.0.0.0/24에 인바운드/아웃바운드 액세스를 추가하고 UFW를 다시 시작해 보았으나 소용이 없었습니다.
UFW 설정
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action From
-- ------ ----
80,443/tcp (WWW Full) ALLOW IN Anywhere
5900/tcp (VNC) ALLOW IN Anywhere
22/tcp (SSH) ALLOW IN Anywhere
5901 ALLOW IN Anywhere
3306 ALLOW IN 192.168.0.0/16
631 (CUPS) ALLOW IN Anywhere
224.0.0.0/24/udp ALLOW IN Anywhere
80,443/tcp (WWW Full (v6)) ALLOW IN Anywhere (v6)
5900/tcp (VNC (v6)) ALLOW IN Anywhere (v6)
22/tcp (SSH (v6)) ALLOW IN Anywhere (v6)
5901 (v6) ALLOW IN Anywhere (v6)
631 (CUPS (v6)) ALLOW IN Anywhere (v6)
ff02::1/udp ALLOW IN Anywhere (v6)
224.0.0.0/24/udp ALLOW OUT Anywhere
ff02::1/udp ALLOW OUT Anywhere (v6)
시스템 로그
Jul 22 07:41:07 rpiserver kernel: [200897.130231] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42871 PROTO=2
Jul 22 07:41:09 rpiserver kernel: [200898.353921] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30287 PROTO=2
Jul 22 07:41:52 rpiserver kernel: [200941.466217] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=58252 PROTO=2
Jul 22 07:41:52 rpiserver kernel: [200941.466345] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5859 PROTO=2
Jul 22 07:41:53 rpiserver kernel: [200942.487756] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 07:43:12 rpiserver kernel: [201021.848041] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42872 PROTO=2
Jul 22 07:43:19 rpiserver kernel: [201028.200702] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 07:43:54 rpiserver kernel: [201064.139493] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f0:03:8c:d4:ae:af:08:00 SRC=192.168.11.129 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=58854 PROTO=2
Jul 22 07:45:17 rpiserver kernel: [201146.776542] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42873 PROTO=2
Jul 22 07:45:18 rpiserver kernel: [201147.390831] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30307 PROTO=2
Jul 22 07:45:26 rpiserver kernel: [201155.174401] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12040 PROTO=2
Jul 22 07:47:23 rpiserver kernel: [201272.217144] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42874 PROTO=2
Jul 22 07:47:28 rpiserver kernel: [201277.951599] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 07:47:29 rpiserver kernel: [201278.361758] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30319 PROTO=2
Jul 22 07:48:15 rpiserver kernel: [201324.953364] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=60685 PROTO=2
Jul 22 07:49:27 rpiserver kernel: [201397.151998] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42875 PROTO=2
Jul 22 07:49:37 rpiserver kernel: [201406.566453] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 07:51:11 rpiserver kernel: [201500.980593] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=27258 PROTO=2
Jul 22 07:51:33 rpiserver kernel: [201522.278789] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42876 PROTO=2
Jul 22 07:51:35 rpiserver kernel: [201524.329279] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12088 PROTO=2
Jul 22 07:53:37 rpiserver kernel: [201647.103024] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42877 PROTO=2
Jul 22 07:53:41 rpiserver kernel: [201650.795068] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12102 PROTO=2
Jul 22 07:55:42 rpiserver kernel: [201772.033729] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42878 PROTO=2
Jul 22 07:55:46 rpiserver kernel: [201775.314779] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12113 PROTO=2
Jul 22 07:55:47 rpiserver kernel: [201776.536158] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30372 PROTO=2
Jul 22 07:57:47 rpiserver kernel: [201897.166916] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42879 PROTO=2
Jul 22 07:57:50 rpiserver kernel: [201899.625495] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12126 PROTO=2
Jul 22 07:59:14 rpiserver kernel: [201984.104811] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=61713 PROTO=2
Jul 22 07:59:53 rpiserver kernel: [202022.300223] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42880 PROTO=2
Jul 22 07:59:55 rpiserver kernel: [202024.754811] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12143 PROTO=2
Jul 22 08:01:41 rpiserver kernel: [202130.640971] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5860 PROTO=2
Jul 22 08:01:41 rpiserver kernel: [202130.641242] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=13207 PROTO=2
Jul 22 08:01:57 rpiserver kernel: [202147.126435] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42881 PROTO=2
Jul 22 08:01:58 rpiserver kernel: [202147.331561] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:04:03 rpiserver kernel: [202272.362170] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42882 PROTO=2
Jul 22 08:04:06 rpiserver kernel: [202275.229425] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:06:07 rpiserver kernel: [202396.983416] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42883 PROTO=2
Jul 22 08:06:08 rpiserver kernel: [202397.190250] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12187 PROTO=2
Jul 22 08:07:19 rpiserver kernel: [202468.460367] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=63754 PROTO=2
Jul 22 08:08:13 rpiserver kernel: [202522.321647] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42884 PROTO=2
Jul 22 08:08:13 rpiserver kernel: [202522.937013] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:08:16 rpiserver kernel: [202525.598293] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17827 PROTO=2
Jul 22 08:08:49 rpiserver kernel: [202558.674836] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5861 PROTO=2
Jul 22 08:08:50 rpiserver kernel: [202559.288053] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12200 PROTO=2
Jul 22 08:09:01 rpiserver CRON[23924]: (root) CMD ( [ -x /usr/lib/php5/sessionclean ] && /usr/lib/php5/sessionclean)
Jul 22 08:09:01 rpiserver CRON[23932]: (root) CMD ( [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessionclean; fi)
Jul 22 08:09:03 rpiserver systemd[1]: Starting Clean php session files...
Jul 22 08:09:03 rpiserver systemd[1]: Started Clean php session files.
Jul 22 08:10:18 rpiserver kernel: [202647.352331] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42885 PROTO=2
Jul 22 08:10:19 rpiserver kernel: [202648.786151] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:10:48 rpiserver kernel: [202677.762409] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=36218 PROTO=2
Jul 22 08:11:31 rpiserver kernel: [202720.261915] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16506 PROTO=2
Jul 22 08:12:05 rpiserver kernel: [202754.567044] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5862 PROTO=2
Jul 22 08:12:05 rpiserver kernel: [202754.567170] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12999 PROTO=2
Jul 22 08:12:22 rpiserver kernel: [202772.076072] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42886 PROTO=2
Jul 22 08:12:23 rpiserver kernel: [202772.278091] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12238 PROTO=2
Jul 22 08:14:28 rpiserver kernel: [202897.414683] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42887 PROTO=2
Jul 22 08:14:30 rpiserver kernel: [202899.465660] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:16:33 rpiserver kernel: [203022.240598] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42888 PROTO=2
Jul 22 08:16:35 rpiserver kernel: [203024.698275] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30490 PROTO=2
Jul 22 08:18:38 rpiserver kernel: [203147.375047] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42889 PROTO=2
Jul 22 08:18:39 rpiserver kernel: [203148.193364] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12277 PROTO=2
Jul 22 08:20:43 rpiserver kernel: [203272.507279] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42890 PROTO=2
Jul 22 08:20:43 rpiserver kernel: [203272.711947] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12285 PROTO=2
Jul 22 08:22:48 rpiserver kernel: [203397.439781] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42891 PROTO=2
Jul 22 08:22:49 rpiserver kernel: [203398.869541] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:24:52 rpiserver kernel: [203521.852334] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42892 PROTO=2
Jul 22 08:24:53 rpiserver kernel: [203523.081228] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:26:58 rpiserver kernel: [203647.397325] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42893 PROTO=2
Jul 22 08:26:58 rpiserver kernel: [203647.804807] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12327 PROTO=2
Jul 22 08:29:03 rpiserver kernel: [203772.426861] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42894 PROTO=2
Jul 22 08:29:03 rpiserver kernel: [203772.631665] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30556 PROTO=2
Jul 22 08:30:29 rpiserver kernel: [203859.057068] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=26206 PROTO=2
Jul 22 08:31:07 rpiserver kernel: [203896.839703] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42895 PROTO=2
Jul 22 08:31:10 rpiserver kernel: [203899.706930] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12364 PROTO=2
Jul 22 08:31:22 rpiserver kernel: [203911.794400] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=62194 PROTO=2
Jul 22 08:31:22 rpiserver kernel: [203911.794524] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5863 PROTO=2
Jul 22 08:31:23 rpiserver kernel: [203912.201449] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12368 PROTO=2
Jul 22 08:31:23 rpiserver kernel: [203912.202271] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:31:23 rpiserver kernel: [203912.814213] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=47037 PROTO=2
Jul 22 08:32:28 rpiserver kernel: [203978.150212] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=62071 PROTO=2
Jul 22 08:33:13 rpiserver kernel: [204022.587317] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42896 PROTO=2
Jul 22 08:33:14 rpiserver kernel: [204023.611551] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:35:18 rpiserver kernel: [204147.521439] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42897 PROTO=2
Jul 22 08:35:22 rpiserver kernel: [204151.615197] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=35632 PROTO=2
Jul 22 08:37:22 rpiserver kernel: [204271.935530] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42898 PROTO=2
Jul 22 08:37:25 rpiserver kernel: [204274.799716] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:38:38 rpiserver kernel: [204347.713070] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5864 PROTO=2
Jul 22 08:38:40 rpiserver kernel: [204350.169613] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30614 PROTO=2
Jul 22 08:39:28 rpiserver kernel: [204397.683527] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42899 PROTO=2
Jul 22 08:39:30 rpiserver kernel: [204400.140961] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30617 PROTO=2
Jul 22 08:39:30 rpiserver kernel: [204400.141099] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12402 PROTO=2
Jul 22 08:39:42 rpiserver kernel: [204411.205118] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=49274 PROTO=2
Jul 22 08:41:32 rpiserver kernel: [204521.997460] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42900 PROTO=2
Jul 22 08:41:35 rpiserver kernel: [204524.661126] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12847 PROTO=2
Jul 22 08:41:35 rpiserver kernel: [204524.661248] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5865 PROTO=2
Jul 22 08:41:36 rpiserver kernel: [204525.684204] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12421 PROTO=2
Jul 22 08:41:38 rpiserver kernel: [204527.732057] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=38502 PROTO=2
Jul 22 08:41:39 rpiserver kernel: [204529.063259] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=27427 PROTO=2
Jul 22 08:43:37 rpiserver kernel: [204647.028671] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42901 PROTO=2
Jul 22 08:43:40 rpiserver kernel: [204649.281249] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12430 PROTO=2
Jul 22 08:43:51 rpiserver kernel: [204660.239290] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5866 PROTO=2
Jul 22 08:43:52 rpiserver kernel: [204661.876659] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:45:43 rpiserver kernel: [204772.571567] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42902 PROTO=2
Jul 22 08:45:43 rpiserver kernel: [204773.185995] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30650 PROTO=2
Jul 22 08:47:19 rpiserver kernel: [204868.317446] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17769 PROTO=2
Jul 22 08:47:48 rpiserver kernel: [204897.704972] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42903 PROTO=2
Jul 22 08:47:52 rpiserver kernel: [204901.592912] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:47:57 rpiserver kernel: [204906.920830] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=35773 PROTO=2
Jul 22 08:48:00 rpiserver kernel: [204909.584370] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=8008 PROTO=2
Jul 22 08:48:00 rpiserver kernel: [204909.584608] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5867 PROTO=2
Jul 22 08:48:00 rpiserver kernel: [204909.788286] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12454 PROTO=2
Jul 22 08:48:07 rpiserver kernel: [204916.239411] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30670 PROTO=2
Jul 22 08:48:56 rpiserver kernel: [204966.007138] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5868 PROTO=2
Jul 22 08:48:56 rpiserver kernel: [204966.007266] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=50127 PROTO=2
Jul 22 08:49:00 rpiserver kernel: [204970.102163] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=47133 PROTO=2
Jul 22 08:49:52 rpiserver kernel: [205021.917343] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42904 PROTO=2
Jul 22 08:49:56 rpiserver kernel: [205025.398474] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:51:57 rpiserver kernel: [205146.845289] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42905 PROTO=2
Jul 22 08:52:00 rpiserver kernel: [205149.302966] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 08:54:02 rpiserver kernel: [205271.773877] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42906 PROTO=2
Jul 22 08:54:02 rpiserver kernel: [205272.183436] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12497 PROTO=2
Jul 22 08:56:08 rpiserver kernel: [205397.316719] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42907 PROTO=2
Jul 22 08:56:08 rpiserver kernel: [205397.726255] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30705 PROTO=2
Jul 22 08:58:12 rpiserver kernel: [205521.938216] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42908 PROTO=2
Jul 22 08:58:15 rpiserver kernel: [205524.600664] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 09:00:01 rpiserver kernel: [205630.281934] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=29596 PROTO=2
Jul 22 09:00:01 rpiserver kernel: [205630.282828] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5869 PROTO=2
Jul 22 09:00:01 rpiserver kernel: [205630.685115] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=6762 PROTO=2
Jul 22 09:00:01 rpiserver kernel: [205630.686010] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5870 PROTO=2
Jul 22 09:00:01 rpiserver kernel: [205630.686921] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 09:00:03 rpiserver kernel: [205632.322631] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=21906 PROTO=2
Jul 22 09:00:10 rpiserver kernel: [205639.491887] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=57480 PROTO=2
Jul 22 09:00:18 rpiserver kernel: [205647.482639] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42909 PROTO=2
Jul 22 09:00:19 rpiserver kernel: [205649.119332] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jul 22 09:02:23 rpiserver kernel: [205772.512107] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42910 PROTO=2
Jul 22 09:02:25 rpiserver kernel: [205774.764880] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
답변1
여전히 이 문제가 있고 해결하고 싶은 사람이 있는 경우:
Steeldriver가 주석에서 정확하게 지적했듯이 이는 대부분의 네트워크에서 발생하는 일반적인 멀티캐스트 트래픽이며 아마도 일종의 검색 서비스로 인해 발생했을 것입니다. 또한 다음에 관한 질문에 답변해 드립니다.
안전하다면 어떻게 수정하거나 로그에 기록되지 않도록 방지할 수 있습니까?
에 표시된 바와 같이이 게시물, ufw는 규칙에 따라 기록하지만 기본적으로 기록하지 않습니다. 따라서 트래픽과 일치하는 방화벽 규칙을 만드십시오.
- 이 트래픽을 명시적으로 허용합니다(예: 224.0.0.251 및 224.0.0.1에 대한 모든 트래픽 허용).
- 또는 그러한 트래픽을 명시적으로 거부합니다(예: 224.0.0.251 및 224.0.0.1의 모든 항목 거부).
답변2
이는 커널에 의해 생성된 UFW 로그 메시지입니다.
시스템에서는 이러한 로그를 관리하기 위해 다른 구성 파일이 생성됩니다.
luvpreet@DHARI-Inspiron-3542:~$ cd /etc/rsyslog.d/
luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ ls | grep ufw
20-ufw.conf
이 파일의 내용을 확인하세요.
luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ cat 20-ufw.conf
# Log kernel generated UFW log messages to file
:msg,contains,"[UFW " /var/log/ufw.log
# Uncomment the following to stop logging anything that matches the last rule.
# Doing this will stop logging kernel generated UFW log messages to the file
# normally containing kern.* messages (eg, /var/log/kern.log)
#& stop
파일 이름을 바꾸고 마지막에 .conf를 제거합니다.
luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ sudo mv 20-ufw.conf 20-ufw
이제 rsyslog를 다시 시작하십시오.
luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ sudo service rsyslog restart
그러면 해당 메시지 기록이 중지됩니다.
참고 - 이 파일이 표시되지 않으면 :msg,contains,"[UFW " /var/log/ufw.log폴더의 모든 파일에서 이 줄을 검색하세요 /etc/rsyslog.d. 이 내용이 표시될 때마다 이 줄에 주석을 달고 rsyslog를 다시 시작하세요.