Microcontrollers
Silicon |
f A stateful firewall with pre-defined and custom filters, consistency checks, and DoS prevention mechanisms capable of processing several million concurrent IP flows
f Static and dynamic Network Address Translation (NAT), Virtual Routing (VLAN), Dynamic Host Configuration Protocol (DHCP) services and traffic management
Enhancing current 3G networks While planning for future LTE deploy- ments, some operators are looking for more near-term wireless offload and coverage solutions. Wireless offloading routes both voice and data traffic over the public Internet, relieving pressure on 3G access networks and improving coverage. However, such offloading introduces networks to many of the same security threats as LTE. Connecting WiFi access points and femtocells over the public Internet exposes the core net- work to a full range of Internet attacks including address spoofing, identity theft,
man-in-the-middle, and DoS. Mobile devices require end-to-end security to the core network with network gateways appropriately firewalled to protect the core network.
By securing offload capabilities, security gateways allow network operators to enhance their current 2G/3G networks while preparing for LTE. The LTE SEG delivers full security support for wireless offloading, protecting a large number of WiFi-connected mobile devices and fem- tocells. An LTE SEG can support various authentication schemes appropriate for each device – including support for both femtocell smart-card and certified based schemes – and back-end RADIUS sup- port. Applications such as I-WLAN and Home NodeB femtocells also require associating the user’s IPsec tunnel with the GTP connection to the packet core. By using an LTE SEG for wireless offloading, network operators can deploy a future-proof solution that immediately enhances their 2G/3G networks.
ATCA for security deployments Because of the complex nature of LTE, it is typically more cost- and energy-efficient for network operators to leverage a complete LTE SEG solution that can be easily and cost-effectively integrated into other LTE network elements. When con- sidering an LTE solution, operators look for a fault tolerant configuration option that meets their requirements for high availability and service availability. To satisfy these requirements, many Telecom Equipment Manufacturers (TEMs) are adopting the open standard Advanced Telecom Computing Architecture (ATCA). ATCA-based products offer a number of benefits for network opera- tors. The ATCA form factor is modular, with standards-based interfaces that can help ease development and integration. As a Commercial Off-the-Shelf (COTS) component, ATCA can help shrink development cycles by up to 12 months. ATCA blades readily integrate into spare slots of existing network elements, or can be in a standalone configuration for
SiliconDisk Technology(Los Angeles) Tel: +888.88.33.44.6 E-mail:
sales@silicondisk-tech.com
Memphis Electronic Inc.(Texas) Tel: +1.713.600.6080 E-mail:
ussales@memphis.ag
14 | April 2011 Embedded Computing Design
www.embedded-computing.com
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