iptables 使用小記
技術筆記
iptables
- iptables [-t table]
command
CHAIN
[NUM] match criteria -j ACTION CHAIN
- -N: (new) new a chain
- -X: delete chain
- -F: flush all chain
- -Z: zero the pkg counter
- -P: policy of chain
- -E: rename
- rule
- -A: append rule
- -I: insert rule to number
- -R: replace
- -D: delete
- LIST
- -L: list
- -S: Specification
- -n: user number to show
- -v: verbose
- -x: show msg
- –line number: show line number
DST-NAT
sudo sysctl net.ipv4.ip_forward=1
sudo iptables -t nat -A PREROUTING -j DNAT -p tcp --to-destination 192.168.15.254:80 -i ens19