DDos Atack, really big problem...

I think i got attacked with DDOS, I want to try to prevent it by using APF
After install i did ancouter a problem like this, what should i do?

I was reading on google i should do path ln -s
but i dont know what to what i should do, can anyone help?

APF -s
Error
/ect/apf/firewall /sbin/iptables: No such file or directory
Many lines like this.

Suse 9.1 + Plesk
Does anyone know ports wich i need to open for proper working Plesk Panel etc...?

Atack simptoms:
It looks like apache going manymanymany connection at once, theen memory is taken + swap, finally 0freee space and server hang.
its dedicated server.

anyone got else different solution? for my prob?
will be really happy you could help me guys, i am attacked from 4days constantly.
i been netstat to find source but cant find it, it looks like there are some ips not only one.

 

 

 

 

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