How can I see firewall rules?

Hi,
In Ubuntu 18.04 with LXD 4.9 (snap version), how can I see the firewalls rules associated with lxd?

Iptables is not showing anything related with lxd:

$ sudo iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

$ sudo iptables -t nat -L -n
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination         

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         

There must be rules because the containers in lxdbr0 network have an internet connection.
Looking at /var/snap/lxd/common/lxd/logs/lxd.log I can see a line with
“Firewall loaded driver “nftables””

in previous versions of lxd I could see the rules with iptables -L
Thanks

nft list ruleset

Thanks. After install nftables package I can see the rules with nft list ruleset
I have to study nftables but I suppose

From what I see at the moment iptables and nftables rules coexist.

One more question, can iptables rules continue to be created within containers without problem or are there any limitations?

You should be able to use iptables inside the container without change.