FreeBSD DDoS protection

[James Howlett]

Hi,

I have a router running BGP and OSPF (bird) on FreeBSD.
Are there any best practises one can take in order to protect the network from DDoS attacks.
I know this isn't easy. But I would like to secure my network as much as possible.
Even if I'am not able to prevent or block a ddos I would like to get some info (snmp trap parhaps) regarding the attack.
Then I can contact my ISP or install an ACL on my router.

Any help would be great.

All best,
jim