SonicWALL TZ 190 Manuale Utente

By default, the SonicWALL security appliance running SonicWALL GAV automatically checks 
the SonicWALL signature servers once an hour. There is no need for an administrator to 
constantly check for new signature updates. You can also manually update your SonicWALL 
GAV database at any time by clicking the Update button located in the Gateway Anti-Virus 
Status section.

SonicWALL GAV signature updates are secured. The SonicWALL security appliance must first 
authenticate itself with a pre-shared secret, created during the SonicWALL Distributed 
Enforcement Architecture licensing registration. The signature request is transported through 
HTTPS, along with full server certificate verification.

 

Application-level awareness of the type of protocol that is transporting the violation allows 
SonicWALL GAV to perform specific actions within the context of the application to gracefully 
handle the rejection of the payload.

By default, SonicWALL GAV inspects all inbound HTTP, FTP, IMAP, SMTP and POP3 traffic. 
Generic TCP Stream can optionally be enabled to inspect all other TCP based traffic, such as 

 

non-standard ports of operation for SMTP and POP3, and IM and P2P protocols. 

Within the context of SonicWALL GAV, the Enable Inbound Inspection protocol traffic 
handling refers to the following:

Non-SMTP traffic initiating from a Trusted, Wireless, or Encrypted Zone destined to any 
Zone.

Non-SMTP traffic from a Public Zone destined to an Untrusted Zone.

SMTP traffic initiating from a non-Trusted Zone destined to a Trusted, Wireless, Encrypted, 
or Public Zone.

SMTP traffic initiating from a Trusted, Wireless, or Encrypted Zone destined to a Trusted, 
Wireless, or Encrypted Zone.