我的系统日志中这些奇怪的UFW块条目的原因可能是什么？

13

我最近在系统日志中注意到大量重复出现的UFW块。这让我感到惊讶，因为我没有设置UFW规则：

$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing)
New profiles: skip

谁能更精通Ubuntu / Linux上的防火墙配置，请告诉我为什么我得到这些条目？

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

我发现这些线程指向多播问题：

http://ubuntuforums.org/showthread.php?t=1886913

https://bbs.archlinux.org/viewtopic.php?id=142525

https://issues.apache.org/jira/browse/TS-775

我绝不是网络专家，也无法正确理解实际情况。如果有人“翻译”了这些内容以便我理解发生了什么，我会很高兴。

firewall  ufw  syslog 
— 谷氨酸
source

Answers:

11

我相信您的本地网络上有一些服务在宣传自己或寻找客户。阻止此流量的是您的“默认拒绝传入”规则。您的路由器看起来很像我在家庭网络中看到的持续的噪音，这是路由器中的多播DNS服务器引起的。

mDNS多播到224.0.0.251，所以这不是您的。您有一些组播到224.0.0.1（通用的“所有主机”地址）。无法告诉您它的含义，但是来自子网地址（xxx1），我猜您的路由器是源。

— 盐
source
谢谢，就是这样！我发现许多（德语）线程在我的路由器模型中描述了此问题。显然，没有GUI设置可以停用这些数据包，但是由于它正在运行Linux，因此您可以手动更改配置：searchnetworking.de/forum/…–
— Glutanimate
我有一些有关处理这些事件的后续问题，并在unix / linux.se上做了一个问题。如果您愿意，请随时鸣叫。
— Glutanimate
3

我的猜测是这是本地路由器询问是否有任何主机有兴趣接收多播-不用担心（请参阅[1]）

您可以使用以下命令阻止创建新的日志条目（对我而言适用于13.10 64位）：

sudo ufw deny from 192.168.178.1 to 224.0.0.1
— n
source
By using our site, you acknowledge that you have read and understand our Cookie Policy and Privacy Policy.
Licensed under cc by-sa 3.0 with attribution required.