scanner not detected with firewall

English Hardware
1

hi

i have a brother 2390dw laster printer who do also scanner.
When my firewall is active, my scanner is not detected

i read then some port need to be open to be able to find the scanner

firewall-cmd --zone=public --list-all --permanent 
public 
  target: default 
  icmp-block-inversion: no 
  interfaces:  
  sources:  
  services: dhcpv6-client mdns 
  ports: 54925/udp 54921/tcp 5353/udp 5353/tcp 
  protocols:  
  forward: yes 
  masquerade: no 
  forward-ports:  
  source-ports:  
  icmp-blocks:  
  rich rules:

i have same issue

2

You have no interface assigned to the public zone.

Show us the output of

firewall-cmd --get-active-zones
3

firewall-cmd --get-active-zones
docker
interfaces: docker0
public
interfaces: wlo1

4

firewall-cmd --list-all
public (active)
target: default
icmp-block-inversion: no
interfaces: wlo1
sources:
services: dhcpv6-client mdns
ports: 54925/udp 5353/udp 137/udp 54921/udp 161/udp 54921/tcp 515/udp 53791/udp
protocols:
forward: yes
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:

5

Can you explicitly configure sane for the network scanner using brsaneconfig4? Then no discovery needed…

sudo /opt/brother/scanner/brscan4/brsaneconfig4 
[sudo] password for root:  
USAGE: brsaneconfig4 -OPTION]   OPTION: 
       -a name=FRIENDLY-NAME model=MODEL-NAME ip=xx.xx.xx.xx     
       -a name=FRIENDLY-NAME model=MODEL-NAME nodename=BRN_xxxxx  
                   : Add network scanner 
       -r FRIENDLY-NAME [FRIENDLY-NAME ...] 
                   : Remove network scanner 
       -q          : Query available network scanners 
       -h          : Display this help message 
       -d          : Diagnosis 
       -p          : Ping (for network scanners)   
       -s:[LABEL]  : Save current configuration 
       -l:[LABEL]  : Load saved configuration
6

i contacted brother and mdns is used so port 5353 should work

the solution is manually to run this

firewall-cmd --zone=home --add-source-port=5353/udp
7

You already had that port included.