A great number of IP That entered to the server, client That Could That want to enter. direct just block him "ip and mac address from the firewall configuration
1. Login to mikrotik Used Winbox
2. then from Winbox block ip
/ Ip firewall filter add chain = forward src-address = 123.123.123.10 action = drop
3. Block IP and Mac address
from Winbox
ip firewall filter add chain = forward src-address = 123.123.123.10 src-mac-address = oe: 2009: j8: kl: 9a
And do not forget to be given the sign (!) Nearby left this MAC OK
4. Chose to Tab Action Action: drop
5. click "apply" and "ok"
Source: http://mikrotik.unimedcenter.org/?p=18
READ MORE - Drop and block IP and Mac address from Mikrotik
1. Login to mikrotik Used Winbox
2. then from Winbox block ip
/ Ip firewall filter add chain = forward src-address = 123.123.123.10 action = drop
3. Block IP and Mac address
from Winbox
ip firewall filter add chain = forward src-address = 123.123.123.10 src-mac-address = oe: 2009: j8: kl: 9a
And do not forget to be given the sign (!) Nearby left this MAC OK
4. Chose to Tab Action Action: drop
5. click "apply" and "ok"
Source: http://mikrotik.unimedcenter.org/?p=18