The built-in antivirus ( Anti-Virus ) hardware gateway ZyWALL USG series can work with 5 protocols - HTTP, FTP, SMTP, SMTP and POP3.
Anti-Virus will scan all network traffic transmitted by the specified protocols to detect viruses. But if the virus is in a file that is transmitted, for example, via the NetBIOS protocol, the ZyWALL USG hardware gateway will not be able to detect it, because Embedded Anti-Virus does not support this protocol.
KB-00498
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