iptables attack close ssh

*raw
:PREROUTING ACCEPT [199179:302566450]
:OUTPUT ACCEPT [587967:675961536]
:myrain - [0:0]
-A PREROUTING -i eth0 -j myrain
-A myrain -p tcp -s 88.198.148.245 --dport 22 -j ACCEPT
-A myrain -p tcp -s 208.43.231.8 --dport 22 -j ACCEPT
-A myrain -p tcp --dport 22 -j DROP
COMMIT