debian sudo iptables: Operation not supported.
What The HELL???
[[email protected] ~]# sudo iptables -nvL iptables: Operation not supported.
Solution
sudo update-alternatives --config iptables
[[email protected] ~]# update-alternatives --config iptables There are 2 choices for the alternative iptables (providing /usr/sbin/iptables). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/sbin/iptables-nft 20 auto mode 1 /usr/sbin/iptables-legacy 10 manual mode 2 /usr/sbin/iptables-nft 20 manual mode Press <enter> to keep the current choice[*], or type selection number: 1 update-alternatives: using /usr/sbin/iptables-legacy to provide /usr/sbin/iptables (iptables) in manual mode
[[email protected] ~]# iptables -nvL Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination
btw;
NOTE: Debian Buster uses the nftables framework by default.
