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Job Board:
Mobility Engineer:
Location: Dallas, TX
Openings: 1
Description: Extropy is currently hiring a Sr. Mobility Engineer with extensive background on the data side of CDMA/EVDO/1X service provider networks. In this role you will be responsible for architecting and engineering of 2G/3G mobile broadband systems, as well as participate in development and field trials of 4G/LTE solutions.
Apply:www.extropy.com/careers
Principal Network Architect
Location: Los Angeles, CA
Openings: 2
Description: Key responsibilities of this position include development of a global network technology roadmap/strategy, and the establishment of reference architectures and standards. This is a technical leadership role that is responsible for the integration of all technologies used in the WAN backbone, regional/metro/local area networks, data centers, Internet perimeters, wireless infrastructure and Cloud-based network services.
Apply:www.extropy.com/careers
Network Consultant
Location: FL & CA
Openings: 2
Description: Extropy is currently hiring a Network Consultant with extensive background in large enterprise and service provider network environments. This position requires consultants that are experts in a wide variety of information technologies, understand industry best-practices, work independently, and have innate ability to learn new topics very quickly.
Apply:www.extropy.com/careers
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Building 4G Networks
Building a 4G Network and Making it Billable - by Brett Coover
Network readiness for 3G proved to be problematic for a majority of service providers. It was difficult to anticipate the exponential increase in data consumption and the strain that mobile applications would put on networks. Existing technologies and networks were not flexible enough, nor prepared to scale at the rate being demanded by consumers. Now as we move into the era of 4G, LTE and WiMAX, it is important to design intelligent, flexible solutions that can scale with demand and provide the quality of experience required by users.
In partnership with Alliance Telecom Solutions, we have developed a webinar series that will teach you how to prepare your networks for 4G. Our discussion will focus on increasing backhaul bandwidth to support more towers; restructuring backbone networks to function on a converged core to provide more flexibility and services; monitoring and managing network performance; and finally capturing revenue from your network investment.
Register Now>>
Tech Tip: IPSEC Remote Gateway
Dynamic IPSEC Remote Gateway Addresses on TMG and ISA
by Brett Coover
If you've worked with Microsoft ISA and now Forefront TMG 2010 IPSEC VPNs, you will know that dynamic end point addresses are not supported. This would be a great feature to have, especially since home and small office connections are less expensive or only available with dynamic (DHCP) addressing. Luckily, services that support DDNS (Dynamic DNS), such as DynDns.org, are available to allow locations with a changing IP address to have a consistent DNS address. This is even supported on a number of SOHO router/firewall platforms. I came across a need to connect a number of branch offices and home offices via IPSEC to a main location. The main reason was to support the VoIP phones that we had without tunneling or other protocols that not all the phones support. We tried PPTP site-to-site tunnels, but those were problematic due to inconsistent NAT support on the different platforms. We found that IPSEC was the only good option for our TMG servers, so we found a remote/branch/home office router. It fit the bill for supporting IPSEC tunnels, being inexpensive and supporting all the typical NAT and firewall functions needed for normal internet connectivity.
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Brett Coover CTO, CCIE #11918