How are application layer attacks mitigated in the SAFE SMR midsize network design corporate Internet module?

A.
Filtering at the ISP, edge router, and corporate firewall.

B.
IDS at the host and network levels.

C.
E-mail content filtering, HIDS, and host-based virus scanning.

D.
OS and IDS detection.

E.
CAR at the ISP edge and TCP setup controls at the firewall.

F.
RFC 2827 and 1918 filtering at ISP edge and midsize network edge.

Explanation:
Threats mitigated
Application layer attacks-Mitigated through IDS at the host and network levels REF;Safe white papers;page 18
SAFE: Extending the Security Blueprint to Small, Midsize, and Remote-User Networks