A Virtual Local Area Network (VLAN) is a network consisting of clients that are not on the same segment of a Local Area Network (LAN) but behave as if they are. They are connected in a virtual sense through software residing on a networking device, such as a switch, which filters traffic using client MAC addresses (layer 2) or IP addresses (layer 3). VLANs reduce network congestion by managing the flow of traffic between clients that communicate often, even if they are not on the same network segment.
When a local switch on the network receives a packet, it can use the destination port, destination MAC address, or protocol to determine to which VLAN the packet belongs. When other switches receive the packet, they determine VLAN membership either implicitly (using the MAC address) or explicitly (using a tag that the first switch added to the MAC address header).
Network VirusWall recognizes both tagged and non-tagged IEEE 802.1Q VLAN frames, thereby preserving the VLAN structure on your network. Using the existing VLAN membership settings on your network, configure Network VirusWall to recognize up to 4094 VLAN IDs. Network VirusWall supports 50 tagged VLANs and 1 non-tagged VLAN. VLAN configuration can only be done while performing pre-configuration. See the Network VirusWall Administrator's Guide for more information.
If the Control Manager server on your network belongs to a VLAN, bind Network VirusWall to the same VLAN (tagged or non-tagged). This will help ensure effective communication between the Control Manager server and Network VirusWall.