Cisco 300-720 Questions Answers

Undesirable URL protection is a feature that allows Cisco ESA to detect and block messages that contain URLs that lead to malicious or unwanted websites, such as phishing, malware, or adult content sites. To enable this feature, outbreak filters and antispam scanning must be enabled on Cisco ESA.

References: User Guide for AsyncOS 15.0 for Cisco Secure Email Gateway, page 6-17.

Outbreak filters and antivirus are two features that can be applied to either incoming or outgoing mail policies on Cisco ESA. Outbreak filters allow Cisco ESA to detect and block messages that contain new or emerging email threats, such as viruses, worms, phishing, or spam, by using real-time updates from Talos intelligence. Antivirus allows Cisco ESA to scan messages for known viruses and malware using one or two antivirus engines (Sophos and McAfee).

References: User Guide for AsyncOS 15.0 for Cisco Secure Email Gateway, page 6-16 and page 7-2.

With DomainKeys or DKIM email authentication, the sender signs the email using public key cryptography. Configuring DomainKeys and DKIM Signing A signing key is the private key stored on the appliance.

The Outbreak Filters feature uses three tactics to protect your users from outbreaks:

Delay.

Redirect.

Modify.