使用Nginx,Wordpress和Ubuntu 16。
我经常被这些消息轰炸 kern.log , syslog and ufw.log
Nov 28 21:02:28 kernel: [246817.450026] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=122.3.133.77 DST=xx.xx LEN=60 TOS=0x00 PREC=0x00 TTL=53 ID=22334 DF PROTO=TCP SPT=45750 DPT=23 WINDOW=5808 RES=0x00 SYN URGP=0
Nov 28 21:02:31 kernel: [246820.443191] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=122.3.133.77 DST=xx.xx LEN=60 TOS=0x00 PREC=0x00 TTL=53 ID=22335 DF PROTO=TCP SPT=45750 DPT=23 WINDOW=5808 RES=0x00 SYN URGP=0
Nov 28 21:02:33 kernel: [246822.448520] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=195.154.181.110 DST=xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=246 ID=6401 PROTO=TCP SPT=52845 DPT=8709 WINDOW=1024 RES=0x00 SYN URGP=0
Nov 28 21:02:37 kernel: [246826.438721] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=122.3.133.77 DST=xx.xx LEN=60 TOS=0x00 PREC=0x00 TTL=53 ID=22336 DF PROTO=TCP SPT=45750 DPT=23 WINDOW=5808 RES=0x00 SYN URGP=0
Nov 28 21:03:26 kernel: [246875.605969] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=89.163.146.88 DST=xx.xx LEN=444 TOS=0x00 PREC=0x00 TTL=59 ID=45590 DF PROTO=UDP SPT=5149 DPT=5060 LEN=424
Nov 28 21:03:41 kernel: [246890.099144] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=82.81.171.85 DST=xx.xx LEN=44 TOS=0x00 PREC=0x00 TTL=56 ID=19683 PROTO=TCP SPT=63561 DPT=2323 WINDOW=58193 RES=0x00 SYN URGP=0
Nov 28 21:03:46 kernel: [246895.517766] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=94.102.49.174 DST=xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=2066 PROTO=TCP SPT=51511 DPT=8000 WINDOW=1024 RES=0x00 SYN URGP=0
Nov 28 21:03:49 kernel: [246898.714239] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=61.240.144.65 DST=xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=31567 PROTO=TCP SPT=46807 DPT=8009 WINDOW=1024 RES=0x00 SYN URGP=0
Nov 28 21:04:14 kernel: [246923.959948] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=163.172.91.185 DST=xx.xx LEN=40 TOS=0x08 PREC=0x00 TTL=243 ID=54321 PROTO=TCP SPT=47175 DPT=22 WINDOW=65535 RES=0x00 SYN URGP=0
Nov 28 21:04:31 kernel: [246940.250298] [UFW BLOCK] IN=eth0 OUT= MAC=xx.xx SRC=78.168.185.115 DST=xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=51 ID=62125 PROTO=TCP SPT=52008 DPT=7547 WINDOW=13555 RES=0x00 SYN URGP=0
由于这些已经登录到ufw.log中,如何阻止它们出现在kern.log和syslog中?
我必须采取一些措施来防止这些攻击吗?或者服务器遇到这种情况是正常的吗?