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Old 08-18-2020, 04:40 PM   #1
binkyd
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More puzzles from dmesg


Just replaced all the removable cables in this box and that cleared up just about all the messages.

Then, on the last reboot, some new lines showed up; can anyone
tell me what they say? I can parse some of it, but what's going on here?

The first one
Code:
 31.703454] [UFW BLOCK] IN=tun0 OUT= MAC= SRC=184.29.92.135 DST=10.29.11.6 LEN=71 TOS=0x00 PREC=0x00 TTL=57 ID=64607 DF PROTO=TCP SPT=443 DPT=63308 WINDOW=281 RES=0x00 ACK PSH URGP=0
A random one
Code:
[  216.913023] [UFW BLOCK] IN=enp1s0 OUT= MAC=8c:ec:4b:87:a6:61:10:33:bf:e2:2c:34:08:00 SRC=74.208.5.13 DST=10.0.0.193 LEN=52 TOS=0x00 PREC=0x00 TTL=55 ID=51708 DF PROTO=TCP SPT=993 DPT=36548 WINDOW=506 RES=0x00 ACK URGP=0 
[  240.936856] [UFW BLOCK] IN=enp1s0 OUT= MAC=01:00:5e:00:00:01:10:33:bf:e2:2c:34:08:00 SRC=10.0.0.1 DST=224.0.0.1
There's over a hundred of them; the last 2 lines
Code:
[  950.095641] [UFW BLOCK] IN=tun0 OUT= MAC= SRC=69.27.116.3 DST=10.90.10.10 LEN=266 TOS=0x00 PREC=0x00 TTL=56 ID=10685 DF PROTO=TCP SPT=993 DPT=54758 WINDOW=331 RES=0x00 ACK PSH URGP=0 
[  991.001803] [UFW BLOCK] IN=enp1s0 OUT= MAC=01:00:5e:00:00:01:10:33:bf:e2:2c:34:08:00 SRC=10.0.0.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=47940 PROTO=2
So what have I done to the firewall?

Last edited by binkyd; 08-18-2020 at 04:53 PM.
 
Old 08-18-2020, 06:31 PM   #2
berndbausch
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Quote:
Originally Posted by binkyd View Post
can anyone tell me what they say?
They report blocked network traffic.
Quote:
So what have I done to the firewall?
You switched on logging.

I don't think there is anything to be worried about.

Last edited by berndbausch; 08-18-2020 at 06:33 PM.
 
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Old 08-18-2020, 08:17 PM   #3
binkyd
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Thank you.
How did I do that, and how do I switch it off?
 
Old 08-18-2020, 08:22 PM   #4
berndbausch
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From https://help.ubuntu.com/community/UFW#Logging:
Quote:
To enable logging use:

sudo ufw logging on

To disable logging use:

sudo ufw logging off
I found that page by googling ufw logging. To be honest, all I know about ufw is its spelling.

Last edited by berndbausch; 08-18-2020 at 08:23 PM.
 
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Old 08-18-2020, 09:00 PM   #5
binkyd
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thanks heaps.
I actually never thought of
Quote:
googling ufw logging
doh!
 
Old 08-18-2020, 09:42 PM   #6
binkyd
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berndbausch
thanking you.
solved problem.
cleanest dmesg ever this box now
 
Old 08-18-2020, 11:02 PM   #7
berndbausch
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Quote:
Originally Posted by binkyd View Post
thanks heaps.
I actually never thought of
doh!
So you learned two things for the price of one!
 
  


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