I noticed recently after running update.sh that there is a new iptables rule being created for “isolation” that is breaking replication and backups for me. (i.e. it’s DROPping a custom MySQL connection from another host on the LAN.)
I see the new code in the data/Dockerfiles/netfilter/modules/IPTables.py file, which is fine, but how do I <easily allow> two custom rules to ALLOW LAN access to SQL <before> the DROP instruction in iptables? Is the only way to update the .py script manually? (i.e. how and where do I add the “mailcow isolation exception rule”?)
Basically, I want to ALLOW a specific IP or LAN/24 to connect to MySQL.
Thank you.