How to stop dos and ddos attack on web servers

Hi,
I am going to set a new server on freebsd. Can anyone help me to prevent or stop the dos or ddos attacks on web servers?

Any help will be appreciated.

There are no short-term solutions to eliminate DDoS attacks. All systems have their limits. One way to make a system more survivable is to increase these limits; the more resources there are, the better the chances are that the system will survive an increased demand for use. For a web service, the webmaster might increase the number of connections that a web service can accept. This spreads the increased load over more computers and helps to ensure that no one computer operates too near its limit.

You can stop DDoS attack from php by following steps:

• Open php.ini
• Find safe_mode = off and change it to safe_mode = on
• Then fine safe_mode_gid = off and change it to safe_mode = on
• Restart your webserver

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users. You can check this thread for prevention: http://forums.techarena.in/networkin...ty/1174822.htm