Score:0

Iptables drop UDP packet

cu flag

How can I block a packet on specific IP:port on UDP that is containing for instance 'ff ff ff ff'?

I have ddos attacks that contain those packets, it's a source-query but we are not using source query for it.

Nikita Kipriyanov avatar
za flag
This is implemented by the *string match*. See `iptables -m string --help` and the *string* section of `man iptables-extensions`. It has almost your example.
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