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Hello, I’ve been noticing that systemd-journal has been slowly but steadily eating up RAM (14.55% 2 days ago, 17.27% yesterday, and 18.23% today). When I looked in the logs, I found many breaks in attempts but also a constant stream of these messages:
kernel: [UFW BLOCK] IN=eth0 OUT= MAC=04:01:3b:5c:8a:01:4c:96:14:a4:ab:f0:08:00 SRC=104.236.189.176 DST=162.243.241.41 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=54321 PROTO=TCP SPT=58773 DPT=6379 WINDOW=65535 RES=0x00 SYN URGP=0
kernel: [UFW BLOCK] IN=eth0 OUT= MAC=04:01:3b:5c:8a:01:4c:96:14:a4:af:f0:08:00 SRC=171.224.207.81 DST=162.243.241.41 LEN=44 TOS=0x00 PREC=0x00 TTL=51 ID=13232 PROTO=TCP SPT=45620 DPT=23 WINDOW=40732 RES=0x00 SYN URGP=0
kernel: [UFW BLOCK] IN=eth0 OUT= MAC=04:01:3b:5c:8a:01:4c:96:14:a4:ab:f0:08:00 SRC=107.6.116.106 DST=162.243.241.41 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=5786 PROTO=TCP SPT=55207 DPT=3389 WINDOW=1024 RES=0x00 SYN URGP=0
kernel: [UFW BLOCK] IN=eth0 OUT= MAC=04:01:3b:5c:8a:01:4c:96:14:a4:ab:f0:08:00 SRC=111.132.227.100 DST=162.243.241.41 LEN=60 TOS=0x00 PREC=0x00 TTL=47 ID=13331 DF PROTO=TCP SPT=32958 DPT=23 WINDOW=5840 RES=0x00 SYN URGP=0
kernel: [UFW BLOCK] IN=eth0 OUT= MAC=04:01:3b:5c:8a:01:4c:96:14:a4:ab:f0:08:00 SRC=111.132.227.100 DST=162.243.241.41 LEN=60 TOS=0x00 PREC=0x00 TTL=47 ID=13332 DF PROTO=TCP SPT=32958 DPT=23 WINDOW=5840 RES=0x00 SYN
When I’m using the control panel from digitalocean, I actually see all of these messages being printed out right off the terminal, that doesn’t seems normal.
I’m not sure what these are and what to do of them.
My ufw is configured to allow http, ssh, https. Logging set to low, default to deny incoming traffic and to allow outgoing traffic.
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