4ipnet Blog: All About Wireless Networking

Today we're putting an end to the wireless access point optimization series by introducing DHCP snooping and layer 2 firewall. Thanks for following through! DHCP Snooping In order for a device to begin using network services after connecting to an access point, it must first obtain an IP address from the network’s DHCP server. This is a point of vulnerability, as attackers can install their own DHCP server and assign clients arbitrary IP addresses and default gateways. In the worst case, a rogue DHCP server controlled by a hacker could potentially cause network administrators to lose control of their entire network, which is a major security flaw. The DHCP SNOOPING feature on 4ipnet APs prevents this type of network failure by allowing network administrators to specify the IP and MAC addresses of trusted DHCP servers. As a result, the APs will filter out DHCP messages from unrecognized servers, preventing them from ever reaching client devices. Although DHCP attacks are typ...

Good day! Today let us continue the wireless AP optimization series with "station isolation". In many Wi-Fi environments, it is not uncommon to see upwards of twenty or thirty devices connected to a single access point. Allowing direct communication between these clients would be a security concern for network operators, as malicious traffic from one client could potentially affect another. The STATION (CLIENT) ISOLATION feature on 4ipnet APs allows network operators to prevent devices connected to the same AP from communicating with one another, essentially creating a virtual network per client. Station Isolation prevents direct communication between clients on the same AP Imagine that you have a bunch of strangers connected to the same access point in a coffee shop, all of whom are assigned IP addresses by the same DHCP server, which usually means that they are on the same network (subnet). If a user were to have file sharing turned on (e.g. Windows-based system), t...

We're running a product promotion now! Please see below. For more information, please contact sales@4ipnet.com ##ShowAll##

Not sure about which model to buy? This comparison table shows the differences between each 4ipnet wireless access point in terms of feature. We hope it can assist your buying decision. Also, we're not done with the AP Optimization series yet; will continue in a couple of days! ##ShowAll##

The SW1024 offers a power budget of up to 500 watts with full layer 2 functionality and advanced security features, without compromising the flexibility and simplicity of Wi-Fi deployments.  4ipnet, a leading provider of competitive and comprehensive wireless LAN solutions for meeting the Wi-Fi demands of tomorrow, today introduced the SW1024, an access switch with 24 Ethernet and 2 SFP gigabit ports. The SW1024 can substantially increase deployment flexibility by eliminating the need for power outlets and additional cabling at the network edge.  With an abundant PoE power budget of 500 watts, the SW1024 is capable of powering wired or wireless IP-based devices such as 802.11n or 802.11ac wireless access points, IP cameras, and VoIP phones. Furthermore, users can perform fine-grained per-port power control to help enterprises save power, perform power prioritization, and maximize utilization.  Other key features on the SW1024 include advanced management funct...

Happy Chinese New Year! (It's the year of the horse by the way.) Today let's talk about proxy ARP and WPA2. PROXY ARP ARP (Address Resolution Protocol) is an essential protocol in networking (both wired and wireless) that resolves IP addresses to MAC addresses when data needs to be sent between two hosts. Whenever a host wishes to obtain the physical address (MAC) of another, it will broadcast an ARP request onto the network. On wireless networks this may sometimes be additional and unnecessary traffic that decreases overall network performance. 4ipnet access points address this issue by employing PROXY ARP to reduce the amount of ARP packets in the wireless medium, handling ARP requests itself instead of forwarding them onto the wireless medium when possible. As long as the AP’s own ARP table has a record of the address requested, it can respond on behalf of the actual host. As a result, the amount of ARP packets in the air diminishes and hosts learn MAC addresses mu...

The catalog presents you with the latest product information of 4ipnet! Our product portfolio includes wireless LAN controllers, indoor/outdoor access points, unified access switches and hotspot gateways, all enterprise-grade, of course. Check below (you can download the file as well): For more information, please contact  sales@4ipnet.com ##ShowAll##