iptables rules not working. Where is the mistake?

Question

linux

I'm trying to set up iptables.

[email protected]:~# iptables -nL
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
DROP       22   --  0.0.0.0/0            0.0.0.0/0

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

I'm watching this through ssh connected to port 22, i.e. the rules don't work. Where did I go wrong?

Answer 1

sudo iptables -A INPUT -p tcp -d 192.168.1.200 --dport 22 -j DROP
instead of 192.168.1.200 is your IP

Answer 2

I'm no iptables guru but try REJECT instead of DROP

Answer 3

I would like to see the rules, otherwise INPUT (policy ACCEPT), who drops what, is not clear.

Answer 4

I recommend dropping either by destination IP or by incoming interface

Answer 5

If this is centos, then try to configure 1 any rule through the SETUP command and then edit (I noticed such a bug in 6.5) also in version 7 there is a new crap that acts as a filter (disable or configure)
PS to restart, do not use restart better service iptables stop, service iptables start