How to block access to a server by IP address

[alexo]

I'm getting a ton of traffic from one ip - 188.165.225.12

All my attempts to reject traffic from this ip aren't successful.

try this

route add -host 188.165.225.12 reject 

iptables -A INPUT -s 188.165.225.12 -j DROP 

even put this in .htaccess file

Deny from 188.165.225.12

restart server and if i check established connection i view this

[root@mydrug ~]# netstat -natu | grep 'ESTABLISHED'

tcp        0  22470 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64293 ESTABLISHED
tcp        0    471 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64289 ESTABLISHED
tcp        0      0 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64303 ESTABLISHED
tcp        0  37960 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64265 ESTABLISHED
tcp        0  20673 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64337 ESTABLISHED
tcp        0      0 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64669 ESTABLISHED
tcp        0  77380 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64489 ESTABLISHED
tcp        0  12294 ::ffff:my-server-ip:80      ::ffff:188.165.225.12:64206 ESTABLISHED

any advice

 

[alexo]

Can anybody explain pls, what this mean?

Code:

[root@mydrug ~]# netstat -natu | grep 'ESTABLISHED'

tcp        0     52 my-ip:22             46.241.204.187:50197        ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:51770 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:54796 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:54797 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:54795 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:66.249.76.240:46089  ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:204.236.222.25:44221 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:192.210.62.162:4154  ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:54701 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:54703 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:180.76.5.67:65464    ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:188.165.225.12:53403 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:171.161.160.10:12510 ESTABLISHED
tcp        0      0 ::ffff:my-ip:80      ::ffff:175.143.248.33:49822 ESTABLISHED

Does is mean, that at current time there are established connections from this Ip addresses? {f.e. 175.143.248.33,188.165.225.12, 171.161.160.10, etc }