Network bridge. works on the second layer data link layer of the MAC sublayer through the MAC of the OSI7 layer ISO reference model of, network interconnection through MAC frame forwarding. Comply with ANSI / IEEE Std 802.1D

Supporting Virtual LAN VLAN. Comply with ANSI / IEEE Std 802.1Q

Supporting point-to-point protocol PPPoE. Compliance with RFC 2516

Supporting ARP / RARP protocol, in line with RFC826. Automatic identification of protected host according to ARP communications.

Supporting IPv4 protocol, in line with RFC791. automatically identify the protected host according to IP traffic

Supported TCP / UDP / ICMP protocol, etc., in line with the RFC793/768/792.

* For TCP protocol, through the SYN Proxy, ARQ delay, connection tracing technology, to help with DOS / DDOS attack defense. Can be expanded with plug-in for the application-layer defense.
* For UDP protocol, simultaneous connections, ARQ delay, connectivity and other tracking technology, to help with DOS / DDOS attack defense. Can be expanded with plug-in for the application-layer defense.
* The ICMP and other protocol, primarily by means of traffic restrictions to implement DOS / DDOS attack defense.

Supporting rules filter mode, with packet inspection firewall functionality. At the same time, also supports keyword filtering, regular expression pattern matching etc.

Supporting IP-based traffic flow control model to restrict the flow of a host.Implemented the cluster model with 802.3ad link aggregation , use multi-point to handling traffic, to avoid single point of failure