Maintaining security iptables.

Im trying to run my first slow machine for advertising and ideas.
The main reason why i need security is wireshark analyse which showing problems with network.
Im trying to make iptables with u32 hex eBPF rules.
As First of all we need good security for everybody.
Do some body have some good iptables with file type=js,html,php,json ! -j drop?
Maybe some hex u32 packet virus logic drop ?
