How to block IP address ?

[abhiz]

I am seeing an unusual traffic from an IP address and its constantly flooding my mail server
I want to block that particular IP address,how can i do that.

[veronica]

Dont you have a firewall to block the traffic from that IP ?

[abhiz]

I dont have any firewall ...is there any way

[siomon.liu]

u may run this command.


for example
iptables -I INPUT -s xxx.xxx.xxx.xxx -j DROP

[FritzBrause]

... if your ZCS Server is running on Ubuntu Server you can edit

/etc/ufw/before.rules

Just have a look at https://help.ubuntu.com/8.04/serverg.../firewall.html