The Virtual Access Service Managed Gateway supports IP protocol filtering on a per interface basis. Extended firewall support is presented as a specific set of configurable options allowing the blocking of certain traffic types and preventing common network attack techniques. This prevents common forged packets from crossing the firewall. Common Internet attacks use broadcast traffic in a number of ways, these two features stop such packets. Prevents various types of ping that could represent a threat such as large pings and fragmented pings from being passed or received by the router.
Many Internet attacks use various unusual pings.
Many users enable Windows file-sharing on their Windows PCs. This can lead to hackers deleting files on PCs, or putting illegal files on users' machines. This firewall feature prevents windows file-sharing out to the Internet. Fire-walling WINS traffic prevents machines not on the LAN from discovering what Windows machines are on your network and what shares they have enabled. This prevents any hacking or spoofing attacks against any of the gateway's remote interfaces.