I have a CS 1.6 dedicated server running up on LAN. Someone is caausing my server to lag heavily using some lagger tools probably. Plz help me. How can I stop him from lagging my server ? Ihave antics dos installed. Thanks in advance.

Well, you could single out the ip address where the attacks they are coming from if you have the tool to do that. And with that, you can put it in the block list so your server can function as normally as i could. Though the problem would be if the attacker is masking from another ip address. And I do not know if there is a law in your area concerning blocking ip address from access to your server.