Right that gives me a lot of stuff that I don't know how to read.

bash
> sudo iptables --list

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy DROP)
target     prot opt source               destination         
netmakerfilter  all  --  anywhere             192.168.12.0/24      /* NETMAKER */
netmakerfilter  all  --  anywhere             anywhere            
DOCKER-USER  all  --  anywhere             anywhere            
DOCKER-ISOLATION-STAGE-1  all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
DOCKER     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
DOCKER     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain DOCKER (2 references)
..... Removed

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
.... Removed      

Chain DOCKER-ISOLATION-STAGE-2 (2 references)
.... Removed    

Chain DOCKER-USER (1 references)
.... Removed

Chain netmakerfilter (2 references)
target     prot opt source               destination         
ACCEPT     all  --  rasmus-phone.ext-admin  192.168.12.0/24     
ACCEPT     all  --  netmaker-server-client.ext-admin  192.168.12.0/24     
DROP       all  --  anywhere             anywhere            
RETURN     all  --  anywhere             anywhere