Chapter 8 Hardware Acceleration : Hardware acceleration overview : Network processors (NP1, NP2, NP3, NP4 and NP6) : Offloading NP pre-IPS anomaly detection
  
Offloading NP pre-IPS anomaly detection
Network interfaces associated with a port attached to a network processor can be configured to offload anomaly checking. This anomaly checking happens before other offloading and separately from and in advance of DoS policy anomaly checking. Using the following command, each FortiGate interface can have a different anomaly checking configuration.
config system interface
edit <port-name>
set fp-anomaly <anomalies>
end
where <anomalies> can be one, more than one or all of the following:
Anomaly
Description
drop_icmp_frag
Drop ICMP fragments to pass.
drop_icmpland
Drop ICMP Land.
drop_ipland
Drop IP Land.
drop_iplsrr
Drop IP with Loose Source Record Route option.
drop_iprr
Drop IP with Record Route option.
drop_ipsecurity
Drop IP with Security option.
drop_ipssrr
Drop IP with Strict Source Record Route option.
drop_ipstream
Drop IP with Stream option.
drop_iptimestamp
Drop IP with Timestamp option.
drop_ipunknown_option
Drop IP with malformed option.
drop_ipunknown_prot
Drop IP with Unknown protocol.
drop_tcp_fin_noack
Drop TCP FIN with no ACT flag set to pass.
drop_tcp_no_flag
Drop TCP with no flag set to pass.
drop_tcpland
Drop TCP Land.
drop_udpland
Drop UDP Land.
drop_winnuke
Drop TCP WinNuke.
pass_icmp_frag
Allow ICMP fragments to pass.
pass_icmpland
Allow ICMP Land to pass.
pass_ipland
Allow IP land to pass.
pass_iplsrr
Allow IP with Loose Source Record Route option to pass.
pass_iprr
Allow IP with Record Route option to pass.
pass_ipsecurity
Allow IP with Security option to pass.
pass_ipssrr
Allow IP with Strict Source Record Route option to pass.
pass_ipstream
Allow IP with Stream option to pass.
pass_iptimestamp
Allow IP with Timestamp option to pass.
pass_ipunknown_option
Allow IP with malformed option to pass.
pass_ipunknown_prot
Allow IP with Unknown protocol to pass.
pass_tcp_fin_noack
Allow TCP FIN with no ACT flag set to pass.
pass_tcp_no_flag
Allow TCP with no flag set to pass.
pass_tcpland
Allow TCP Land to pass.
pass_udpland
Allow UDP Land to pass.
pass_winnuke
Allow TCP WinNuke to pass.