I'm using UFW and don't know what's going on here. My ufw log has many statements like this:

 [UFW BLOCK] IN=enp0s25 OUT= MAC=01:00:5e:7f:ff:fa:9c:30:5b:c3:df:c2:08:00 SRC= DST= LEN=32 TOS=0x10 PREC=0x40 TTL=1 ID=299 PROTO=2 
  • The SRC IP is my Brother printer connected by wireless to my LAN.
  • I have read that the DST IP is the IP in the SSDP protocol for general service discovery?
  • OUT I understand is a mixup of MAC addresses -- I suspect I need not unravel it for this question, that somewhere in there is my printer's MAC
  • IN is my network device

So my inexperienced interpretation is that this is my printer calling in to my PC looking for a service and UFW is blocking it. But I have no problem printing.

  • What's going on?
  • Is it advised to configure ufw to accept this?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.