Enabling/Disabling Application Layer Gateway Protocols Overview

Application Layer Gateways (ALGs) manage specific protocols by intercepting traffic as it passes through the security device. After analyzing the traffic, the ALG allocates resources to permit the traffic to pass securely. By default, all ALGs are enabled on a security device. In situations where a security device is receiving an excessive amount of malicious or accidental traffic of a particular type, you might want to disable the associated ALG.

You can enable or disable the following ALG protocols:

Related Documentation