ฉันเพิ่งสังเกตเห็นบล็อก UFW ที่เกิดซ้ำจำนวนมากใน syslog ของฉัน สิ่งนี้ทำให้ฉันประหลาดใจเนื่องจากฉันไม่มีกฎของ UFW:
$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing)
New profiles: skip
มีใครบางคนที่มีประสบการณ์มากกว่ากับการกำหนดค่าไฟร์วอลล์บน Ubuntu / Linux โปรดบอกฉันว่าทำไมฉันถึงได้รับรายการเหล่านี้
Apr 7 20:01:04 mhcUBN kernel: [18234.747861] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3586 DF PROTO=2
Apr 7 20:03:09 mhcUBN kernel: [18359.541595] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3587 DF PROTO=2
Apr 7 20:05:14 mhcUBN kernel: [18484.335607] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3588 DF PROTO=2
Apr 7 20:07:19 mhcUBN kernel: [18609.129970] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3589 DF PROTO=2
Apr 7 20:09:24 mhcUBN kernel: [18733.923467] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3590 DF PROTO=2
Apr 7 20:10:01 mhcUBN CRON[31522]: (mhc) CMD ("/home/mhc/.scripts/Customization/Powersaving/battmonitor")
Apr 7 20:11:29 mhcUBN kernel: [18858.717504] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3591 DF PROTO=2
Apr 7 20:13:34 mhcUBN kernel: [18983.510575] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3592 DF PROTO=2
Apr 7 20:15:39 mhcUBN kernel: [19108.306349] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3593 DF PROTO=2
Apr 7 20:17:01 mhcUBN CRON[582]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Apr 7 20:17:44 mhcUBN kernel: [19233.100675] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3594 DF PROTO=2
Apr 7 20:19:49 mhcUBN kernel: [19357.893801] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3595 DF PROTO=2
Apr 7 20:20:01 mhcUBN CRON[1272]: (mhc) CMD ("/home/mhc/.scripts/Customization/Powersaving/battmonitor")
Apr 7 20:21:54 mhcUBN kernel: [19482.686449] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3596 DF PROTO=2
Apr 7 20:23:59 mhcUBN kernel: [19607.480499] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3597 DF PROTO=2
Apr 7 20:26:04 mhcUBN kernel: [19732.274979] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3598 DF PROTO=2
Apr 7 20:28:09 mhcUBN kernel: [19857.068910] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3599 DF PROTO=2
Apr 7 20:30:01 mhcUBN CRON[3484]: (mhc) CMD ("/home/mhc/.scripts/Customization/Powersaving/battmonitor")
Apr 7 20:30:14 mhcUBN kernel: [19981.862231] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3600 DF PROTO=2
Apr 7 20:32:19 mhcUBN kernel: [20106.657165] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3601 DF PROTO=2
Apr 7 20:34:24 mhcUBN kernel: [20231.450561] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3602 DF PROTO=2
Apr 7 20:36:29 mhcUBN kernel: [20356.244475] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3603 DF PROTO=2
Apr 7 20:38:34 mhcUBN kernel: [20481.038479] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3604 DF PROTO=2
Apr 7 20:40:01 mhcUBN CRON[5702]: (mhc) CMD ("/home/mhc/.scripts/Customization/Powersaving/battmonitor")
Apr 7 20:40:39 mhcUBN kernel: [20605.832618] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3605 DF PROTO=2
Apr 7 20:42:44 mhcUBN kernel: [20730.626727] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3606 DF PROTO=2
Apr 7 20:44:49 mhcUBN kernel: [20855.419706] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3607 DF PROTO=2
Apr 7 20:46:54 mhcUBN kernel: [20980.214309] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3608 DF PROTO=2
Apr 7 20:48:59 mhcUBN kernel: [21105.008870] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:04:0e:ef:71:fe:08:00 SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=3609 DF PROTO=2
ฉันพบเธรดเหล่านี้ซึ่งชี้ไปที่ปัญหามัลติคาสต์:
http://ubuntuforums.org/showthread.php?t=1886913
https://bbs.archlinux.org/viewtopic.php?id=142525
https://issues.apache.org/jira/browse/TS-775
ฉันไม่ได้เป็นผู้เชี่ยวชาญด้านเครือข่าย แต่อย่างใดและไม่เข้าใจสิ่งที่เกิดขึ้นจริง หากใคร "แปล" สิ่งเหล่านี้เพื่อที่ฉันจะได้เข้าใจว่าเกิดอะไรขึ้นฉันก็จะมีความสุขมาก