How to handle codered problems with iptables

Article Title: how to handle the codered problem with iptables. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Ipt_string.o is required.
Use make patch-o-matic in iptables to create a new kernel.

# Code Red
Iptables-a forward-p tcp -- dport 80-m string
-- String "/default. ida"-m state -- state ESTABLISHED
-J REJECT -- reject-with tcp-reset

You can use-j DROP instead. if you want to keep the log, you can also use-j LOG.
Other cmd.exe and root.exe can be processed as well.