Attacking on Source Port 0 (ZERO)
Dobbins, Roland
rdobbins at arbor.net
Sun Oct 14 13:43:58 UTC 2012
On Oct 14, 2012, at 4:48 PM, Shahab Vahabzadeh wrote:
> Does any body know what kind of attack can be come to port 0?
If it's protocol 0, instead of port 0, it's likely a packet-flooding DDoS attack.
If it's port 0, you may be incorrectly blocking non-initial fragments. Alternately, it could represent a fragmented DDoS attack, either non-initial fragments fired directly against something on your network or as the result of a DNS reflection/amplification attack against something on your network.
The log fragment you posted doesn't provide enough detail to make an informed judgement. Also, you should not place servers behind a stateful firewall, anyways.
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Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>
Luck is the residue of opportunity and design.
-- John Milton
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