• Services

      Tech Team Manhattan's network design services cover multi-vendor networks and management systems. We can provide an analysis of the low-level design of your current network and offer recommendations based on industry best practices.

    • We stand for our job, and we are totally dedicated to what we do !

VPN Solutions

In recent years many organizations have faced a growing need to expand their private networks, to allow traveling users access to critical Private Network resources such as e-mail, network drives, intranet sites etc. Virtual Private Network (VPN) technology allows organizations to grant highly secure remote access to branch offices, traveling employees or trusted partners. Implementing and deploying a VPN solution demands a lot of consideration and planning in order to build a scalable network – a number one problem for all VPN networks. There are four most used protocols that allow creating a VPN tunnel-like connection:

  • Point to Point Tunneling Protocol (PPTP)
  • Layer 2 Tunneling Protocol (L2TP)
  • Internet Protocol Security (IPSec) tunnel mode
  • Secure Sockets Layer (SSL)

VPN software and hardware appliances typically support one or more of these protocols.

PPTP was developed by Microsoft therefore all Windows operating systems have built in client software. Linux/UNIX and Macintosh operating systems can connect using available third party applications. In terms of scalability this solution is beneficial, however, this protocol is not considered to be as secure as some of the counterparts. Many Firewall/VPN solutions don’t support this protocol because of security concerns.

L2TP combines features of PPTP and Cisco's Layer 2 Forwarding (L2F) protocols. It uses IPSec for encryption, providing strong security which, unlike PPTP, includes certificate-based authentication and data integrity as well as data confidentiality. An L2TP client is built into Microsoft's Windows 2000, XP and Server 2003 operating systems. Software such as OpenL2TP is available for Linux clients. Macintosh OS X 10.3 (Panther) includes an L2TP/IPSec VPN client. L2TP is also supported by Check Point, Cisco PIX and WatchGuard firewall/integrated VPN products and Microsoft's ISA Server, making it easy to create site-to-site VPNs.

IPSec is responsible for encrypting L2TP connections, moreover, IPSec can be set up in tunnel mode to create the connection. IPSec is the widely supported by VPN appliances and VPN software from all major vendors. This protocol is used for site-to-site connectivity and is very scalable due to its wide support.

While SSL solution is not a total VPN solution, it works well for companies that don’t need to connect two or more offices with site-to-site VPN, instead this solution is used by mobile users that need access to web based servers. Almost every PC has a web browser that supports SSL, making implementation of this solution easy and affordable.

Planning and implementing an effective, affordable and scalable VPN solution will depend on your current business model and a potential growth pattern. It is imperative to consider future plans of an organization in order to be able to sustain the growth. Many factors will influence the final product:

  • Number of remote sites
  • Geographical location
  • Number of users
  • Bandwidth requirements
  • Type of shared resources

Our Cisco certified network professionals have years of hands-on experience in the IT support field. We have been providing network support services for New York companies for over 5 years. For more information please e-mail us,
or call for a free consultation (866) 370-8994 option 3.

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