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AT&T has a comprehensive set of Internet Protocol Virtual Private Network (IP VPN)
Services designed to leverage your existing network and maximize the return on your IT
investments. These services utilize public broadband access and protect your connection
to your own company information network so that your privacy is ensured. AT&T provides
a variety of VPN services.
AT&T Network-Based VPN solutions are designed to provide secure, reliable
transport of critical applications across a unified global platform - the AT&T Global
Network. Using the AT&T high-speed transport infrastructure, this VPN solution leverages
the power of AT&T’s industry leading switching products and Multi-protocol Label
Switching (MPLS), enabling your business to manage its voice traffic, all of it’s data
needs—including the option of real-time video over a consistent and reliable AT&T
high-speed connection— over the world-class AT&T Global Network.
Solution Benefits:
- High-speed backbone infrastructure based on industry leading switching products and MPLS
- Advanced IP routing technology establishing and prioritizing route assignments
- Quality of Service (QoS) / Class of Service (CoS) traffic engineering capabilities for mission critical applications
- Global feature functionality
- Current network investments are optimized while evolving your network over to an integrated IP VPN solution
- Any-to-any communications with remote and local employees, customers, and trading partners
- The reliability and security of an MPLS-based IP-enabled network that is transport and access type independent
AT&T Premises-Based VPN (Virtual Private Network) allows your business to build upon
its current information network to maximize your business’s investment. AT&T’s
Premises-based VPN provides dedicated, broadband, and remote access solutions for
connection to the AT&T Global Network or the Internet.
AT&T’s Premises-Based VPN utilizes intelligent devices such as firewalls or VPN
tunneling terminating at your business's edge. By programming appropriate levels of
network security, user access control, and bandwidth prioritization, a secure
connection is made to your business’s network by the end user – a connection that
is secure, reliable, and fast!
About The Security Layers Protecting Your Data
AT&T Premises-Based VPN utilizes Internet Security Protocol (IPSec) or Secure Sockets
Layer (SSL) to prevent data tampering and help ensure the confidentiality, integrity,
and authenticity of your data communications.
IPSec is a set of security protocols that determines data security at the network
layer for IP networks, including methods for network authentication, data encryption, and
integrity checking. This comprehensive tunneling standard for VPN’s protects data
end-to-end, from the remote user or desktop to the LAN (terminating branch).
SSL is an application layer encryption protocol that allows secure access to and
from user devices located outside of traditional enterprise boundaries. Ideal for
clientless access to web-enabled applications, as well as access to
client-server applications, SSL provides a simplified, efficient way for you to roll
out an IP VPN for remote access applications.
For remote access environments, SSL secures two applications communicating with
each other, while IPSec secures an entire network or secures one network to another.
Solution Options and Benefits:
- Dial access: Available using the AT&T dedicated global infrastructure,
supporting PSTN (Public Switched Telephone Network-- with analog signaling) , GSM
and ISDN, with the option to bundle up to 4 lines/channels for improved access speed.
- AT&T Remote Access Services: A direct wireless connection to your VPN
via designated operator network.
- Wireless (WiFi) hotspots: A wireless access utilizing the 802.11 protocol,
this option is available at user locations such as hotels, airports, or
convention centers. AT&T supports over 20,000 hotspots across the United States.
- Broadband: While dial access and wireless single user configurations use
the AT&T Global Network Client to handle the security (tunneling &
encryption)., this client includes a personal firewall to protect the workstation.
- IPSec and firewall implementation is programmed to the lowest possible level
to prevent any application by-passing the security features.
AT&T’s MIS MPLS PNT segregates Customer data traffic transmitted over the AT&T IP
Network. By using MPLS to create a network-based IP Virtual Private Network (VPN), this
service segregates the Customer’s PNT traffic from other traffic on the network. The
service establishes separate routing tables in AT&T network/provider edge (PE) routers. Unique
VPN ID labels are added to the Customer’s data packets as they enter the AT&T IP Network.
These data labels are removed as the data packets reach their destination. This allows
the Customer's router to read the data.
Because MPLS PNT does not permit access to the Internet, Customers must order separate MIS
ports if they also want Internet access, DNS Administration, Network Newsfeed Service,
or Outbound Mail Relay Service at an MIS with PNT Site.
The MPLS PNT feature is available for use at Sites with Local Channel access (Full/Fractional
DS-1, Full/Fractional DS-3, OC3, OC12, and OC-48).
MPLS PNT Service Types Include:
- MPLS PNT IP Transport:
With MPLS PNT IP Transport, MPLS label stacking starts at AT&T’s MPLS-enabled
Provider Edge (PE) routers. AT&T MPLS and other enabling technologies are used
within the AT&T IP Network to join a business’s MPLS PNT Sites into a VPN.
Your business’s traffic is sent between it’s edge (CE) router at the business’s
Site and the AT&T PE router over the local access circuit. The traffic is
not segregated using MPLS labels under this service type, but your business can
take advantage of AT&T support of static routing or BGP 4 between the CE router
and the AT&T PE router.
- MPLS PNT Label Transport:
With MPLS PNT Label Transport, your business’s CE routers and AT&T PE
routers are configured for IP static routing and Label Distribution Protocol
(LDP) to allow for the exchange of MPLS labeled traffic. The traffic flows
between your business’s CE router and the AT&T PE router via a local access
circuit. MPLS label stacking starts at your business’s router, so your network
information associated with your business’s end user customers is not
visible to AT&T. MPLS PNT Label Transport also enables businesses to
offer MPLS VPN capabilities to their end-user customers.
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