On Sun, May 29, 2022 at 10:33 AM IL Ka <kazakevichi...@gmail.com> wrote: > > >> When running those, I'm told neither the arptablrs nor the ebtables are >> registered (not installed). Should I install them? > > No. > > So, you now have legacy (classic) iptables, right?
Yes. > What is the output of ``iptables -L -v -n`` Chain INPUT (policy ACCEPT 279 packets, 36670 bytes) pkts bytes target prot opt in out source destination 1387 150K f2b-sshd tcp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 22 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 260 packets, 35768 bytes) pkts bytes target prot opt in out source destination Chain f2b-sshd (1 references) pkts bytes target prot opt in out source destination 22 1768 REJECT all -- * * 43.154.179.253 0.0.0.0/0 reject-with icmp-port-unreachable 1069 126K RETURN all -- * * 0.0.0.0/0 0.0.0.0/0 > and ``iptables -S`` ? -P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT -N f2b-sshd -A INPUT -p tcp -m multiport --dports 22 -j f2b-sshd -A f2b-sshd -s 61.177.173.50/32 -j REJECT --reject-with icmp-port-unreachable -A f2b-sshd -s 61.177.173.7/32 -j REJECT --reject-with icmp-port-unreachable -A f2b-sshd -s 43.154.179.253/32 -j REJECT --reject-with icmp-port-unreachable -A f2b-sshd -j RETURN
