Answer
Internet access is NOT a requirement of GFI LanGuard to perform vulnerability scanning on a local network.
Internet access is only required when:
- Scanning remote targets that are not directly connected to the local network.
- Downloading missing Microsoft patches and software updates.
- Downloading GFI LanGuard library/product updates.
NOTE: System administrators must ensure that Internet communications are secured using high-security mechanisms, such as VPNs and other forms of tunneling protocols, when scanning remote targets connected to a public network, such as the Internet.