Cisco Cisco Email Security Appliance C650 Guía Del Usuario
Chapter 10 Virus Outbreak Filters
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Virus Threat Levels (VTL)
provides a basic set of guidelines or definitions for
each of the various levels.
Information about each Outbreak Rule and the associated VTL can be found here:
http://support.ironport.com/outbreaks/
The site lists current Outbreak Rules, including comments about each rule from
the IronPort Threat Operations Center (TOC). See this site for information on how
to report outbreaks.
the IronPort Threat Operations Center (TOC). See this site for information on how
to report outbreaks.
You can click the View link for an Outbreak Rule to see a history of all Outbreak
Rules related to a specific extension type.
Rules related to a specific extension type.
Note
The site is password protected. Please contact IronPort Customer Support if you
are unable to access the site.
are unable to access the site.
For more information about VTL and outbreak rules, see
Table 10-1
Virus Threat Level Definitions
VTL Risk
Meaning
0
None
There is no known risk of a new virus threat.
1
Low
There is a suspected very small scale virus threat.
2
Low/Medium There is a suspected small to medium scale virus threat.
3
Medium
There is a confirmed threat or a medium to large scale
suspected threat.
suspected threat.
4
High
There is a confirmed virus threat that is either large scale
or very dangerous.
or very dangerous.
5
Extreme
There is a confirmed virus threat that is either extremely
large scale, or large scale and extremely dangerous.
large scale, or large scale and extremely dangerous.