iptables - Finding the IP Table settings - Ask Ubuntu

following recommendations basicsecurity manual, enabled ufw firewall (sudo ufw enable) "without further tweaks." i'd know default ip table settings like, don't know how find them.

you can list iptables rule settings -l (--list) option of iptables:

sudo iptables -l 

for more verbosity, add -v:

sudo iptables -vl 

for not name resolution (only numeric output), add -n:

sudo iptables -nvl 

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note that, default list filter table entries, other tables need explicitly mention table type using -t (--table) option, e.g. nat table:

sudo iptables -t nat -nvl 

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also check man iptables more idea.