C H A P T E R
13-1
Cisco ASA Series Firewall CLI Configuration Guide
13
Inspection of Basic Internet Protocols
The following topics explain application inspection for basic Internet protocols. For information on why
you need to use inspection for certain protocols, and the overall methods for applying inspection, see
Getting Started with Application Layer Protocol Inspection, page 12-1
.
•
•
•
•
•
ICMP Error Inspection, page 13-21
•
Instant Messaging Inspection, page 13-21
•
IP Options Inspection, page 13-26
•
IPsec Pass Through Inspection, page 13-30
•
•
NetBIOS Inspection, page 13-37
•
•
SMTP and Extended SMTP Inspection, page 13-39
•
DNS Inspection
The following sections describe DNS application inspection.
•
DNS Inspection Actions, page 13-2
•
Defaults for DNS Inspection, page 13-2
•
Configure DNS Inspection, page 13-2
•
Summary of Contents for ASA 5508-X
Page 11: ...P A R T 1 Access Control ...
Page 12: ......
Page 157: ...P A R T 2 Network Address Translation ...
Page 158: ......
Page 233: ...P A R T 3 Service Policies and Application Inspection ...
Page 234: ......
Page 379: ...P A R T 4 Connection Management and Threat Detection ...
Page 380: ......