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- How to build a scalable VPN solution
- Implementing a virtual private network VPN that you won't have to "rip and re-do" as your company expands takes some planning. This article takes a look at two important aspects of VPN planning: protocol scalability and software vs. appliance solutions. Your company has grown to the point where you...
- Tags: VPN, VPNs, Deb Shinder, Network security, TELECOMMUNICATIONS, NETWORKING, SECURITY, PPTP, Build to Scale Newsletter, Solution, L2TP, Server, WatchGuard, Layer 2 Tunneling Protocol Client
- Technical articles 2005-05-10
Additional Resources
- Performance Evaluation for Remote Access VPNs on Windows Server 2003
- A Virtual Private Network VPN can be defined as a way to provide secure communication between members of a group through use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. This work examines and empirically evaluates the remote access VPNs, namely...
- Tags: Performance, Microsoft Windows Server, Performance Evaluation, Microsoft Windows, PPTP, IEEE, Microsoft Windows Server 2003, VPNs, Network Security, Remote Access, Telecommunications, Networking, IPSec, Security
- White papers 2008-08-12
- How to Configure IPSec Tunneling in Windows 2000
- You can use IP Security IPSec in tunnel mode to encapsulate Internet Protocol IP packets and optionally encrypt them. The primary reason for using IPSec tunnel mode (sometimes referred to as "pure IPSec tunnel") in Windows 2000 is for interoperability with third-party routers or gateways that do not support Layer...
- Tags: Microsoft Windows 2000, Microsoft Windows, IPSec, VPNs, Network Security, Networking, Security
- White papers 2003-11-20
- Sprint—Layer 2/Layer 3 Services Converged Over Common IP Backbone Via L2TPv3 in Cisco IOS Software
- A network convergence strategy expected to get top attention from service providers in the next few years is the ability to offer traditional Layer 2 transport protocols over a Layer 3 native Internet Protocol IP core. Sprint is among the first companies to test ...
- Tags: Software, Backbone, Cisco IOS, Layer 2, Cisco IOS Software, IP, Cisco Systems Inc., Sprint Communications, Networking
- Case studies 2003-03-01
- MPLS VPNs: Layer 2 or Layer 3? Understanding the Choice
- Since there's been data networking, there's been a debate between switched and routed architectures - stated in OSI terms, between performing functions at Layer 3 or Layer 2. Today, we see it again surfacing as network architects consider the design of Virtual Private Networks VPNs that take advantage of Multi-Protocol...
- Tags: MPLS VPN, Layer 2, Layer 3, MPLS, VPNs, Networking, Network Security, Telecommunications
- White papers 2002-07-05
- Cryptanalysis of Microsoft's Point-to-Point Tunneling Protocol (PPTP)
- The Point-to-Point Tunneling Protocol PPTP is used to secure PPP connections over TCP/IP links. In this paper we analyze Microsoft's Windows NT implementation of PPTP. We show how to break both the challenge/response authentication protocol Microsoft CHAP and the RC4 encryption protocol MPPE, as well...
- Tags: PPTP, Microsoft Corp., VPNs, Network Security, Networking
- White papers
- Virtual Private Networking with Windows Server 2003: Overview
- This white paper provides an overview of virtual private networking and the virtual private network VPN technologies supported by Windows Server 2003 and Windows XP. Point-to-Point Tunneling Protocol PPTP and Layer Two Tunneling Protocol with Internet Protocol security (L2TP/IPSec) are described as the two industry standard methods for VPN connections....
- Tags: Microsoft Windows Server, VPNs, Microsoft Windows, Network Security, Microsoft Windows Server 2003, Telecommunications, Networking, Security, Operating Systems, Software
- White papers 2003-03-01
- Virtual Private Networking with Windows Server 2003: Interoperability
- The Microsoft Windows Server 2003 operating system has integrated VPN technology that helps provide secure, low-cost remote access and branch office connectivity over the Internet. Windows Server 2003 virtual private networking has been designed to interoperate with VPN software and devices that support industry standards for secure remote access. This...
- Tags: Interoperability, Microsoft Windows Server, Microsoft Corp., Windows Server 2003 Virtual Private Networking, VPNs, Microsoft Windows Server 2003, Network Security, Microsoft Windows, Telecommunications, Networking, Security, Servers, Operating Systems, Software, Hardware
- White papers 2003-03-01
- On Security in TCP/IP Over Wireless Network
- The Transmission Control Protocol/Internet Protocol (TCP/IP) is combination of different protocols at various layers. TCP/IP is the basic communication language or protocol of the Internet and private networks either an intranet or an extranet. TCP interfaces between the application layer and the network layer. It is a connection oriented, reliable...
- Tags: Security, Florida International University, Network, Protocol, IP, Wireless Network, Wireless, Tcp/Ip, Networking, Network Technology
- White papers 2006-06-22
- Virtual Private Networking With Windows 2000: Deploying Remote Access VPNs
- This paper describes the various components and design choices of a deployment of remote access VPN connections using the Windows 2000 platform Virtual Private Network VPN servers and Windows-based VPN clients. This paper also includes detailed walkthroughs to deploy Point-to-Point Tunneling Protocol PPTP and Layer Two Tunneling Protocol (L2TP)-based remote...
- Tags: Microsoft Windows 2000, VPNs, Remote Access, Microsoft Windows, Network Security, Telecommunications, IPSec, Networking, Security, Operating Systems, Software
- White papers 2002-07-01
- Introduction to SSL VPNs
- In the beginning, there was dialup remote access. Users whoneeded to access resources on the company LAN from home, while on the road, ata customer's location or when otherwise off-site could use a modem to dial intoa server on the LAN. Due to the limitations of modem technology, this was...
- Tags: Deb Shinder, IPSec, PPTP, SSL, SSL VPN, VPN
- Technical articles 2005-05-05
- DCOM using RPC over HTTP
- I am trying to use RPC over HTTP to connect a DCOM client on XP SP2 to a 2k3 SP2 server. If I only select the Tunneling TCP/IP protocol, the client always fails with 800706ba, The RPC server is unavailable, and the event viewer message "DCOM was unable to communicate...
- Tags: ActiveX/COM/COM+/DCOM, Microsoft Windows XP Service Pack 2, Middleware, ian.page@..., RPC, DCOM, HTTP, server
- Discussion threads 2007-08-02
- Aventail Smart Tunneling: Use and Security Assessment
- While many IPSec or underperforming SSL VPN solutions prove difficult to manage and can leave your network susceptible to security threats, Aventail Smart SSL VPNs offer true everywhere access with complete control and security. A new, patent-pending technology--Aventail Smart Tunneling--revolutionizes remote access, providing a Layer 3 connection with Layers 4...
- Tags: Aventail Corp., Ssl/Tls, VPNs, Network Security, Security, Networking
- White papers
- NeoAccel SSL VPN-Plus: The Future of Virtual Private Networks
- VPN Virtual Private Network technology was created to enable secure communications over public networks. Current VPN technology permits using the public Internet or any IP network as if it were a private leased line between end-points, providing secure access to all private resources. Earlier generations of VPN technology were "Narrow"...
- Tags: Network, NeoAccel, VPNs, Network Security, IPSec, Networking, Telecommunications, Security
- White papers 2006-02-08
- Get IT Done: Tunneling terms you should know when deploying a VPN
- While almost all organizations use TCP/IP in their networks, others continue to use legacy protocols, such as Novell’s IPX/SPX, to access NetWare servers and NetBIOS/NetBEUI to access older Windows systems. While these organizations likely have a stake in continuing to support these protocols, they may also want to provide access...
- Tags: authentication, Get IT Done, Internet, L2F, password, PPP, PPTP, Scott Lowe MCSE, TCP/IP, tunnel, VPN
- Technical articles 2003-01-27
- ECLAIR: An Efficient Cross Layer Architecture for Wireless Protocol Stacks
- Seamless mobility across heterogeneous mobile wireless technologies is now essential as mobile subscribers demand full and cost-effective wireless network coverage. Under such mobility conditions the layered protocol stack is inefficient. Significant research has been done for cross layer optimizations of the protocol stack. To enable rapid deployment of existing and...
- Tags: Mobile, Optimization, Indian Institute Of Technology, ECLAIR, Protocol Stack, Wi-Fi, Wireless
- White papers
- The Teredo Protocol: Tunneling Past Network Security and Other Security Implications
- Teredo is a platform-independent protocol developed by Microsoft, which is enabled by default in Windows Vista. Teredo provides a way for nodes located behind an IPv4 NAT to connect to IPv6 nodes on the Internet. However, by tunneling IPv6 traffic over IPv4 UDP through the NAT and directly to the...
- Tags: IPv4, Network, Network Security, Teredo, Security, Networking
- White papers 2006-11-22
- TCP/IP Overview
- The Internet Protocol suite includes not only lower-level specifications, such as Transmission Control Protocol TCP and Internet Protocol IP, but specifications for such common applications as electronic mail, terminal emulation, and file transfer. The Internet protocols are the most widely implemented multivendor protocol suite in use today. Support for at...
- Tags: IP, TCP, Internet Protocol Suite, Tcp/Ip, Network Technology, Networking
- White papers 2007-07-13
- Multiple Layer Error Control Over Wireless Links
- This paper compares the wireless performance of TCP with or without selective acknowledgments and in the presence or absence of a reliable link layer protocol, in order to determine whether link layer error control remains beneficial for TCP variants with improved error recovery capabilities, such as TCP SACK. The paper...
- Tags: Performance, TCP, Error, Wireless, Tcp/Ip, Performance Management, Networking, Human Resources, Workforce Management
- White papers 2007-03-01
- Multi-Layer Analysis of Web Browsing Performance for Wireless PDAs
- This paper studies the user-level and network-level performance for a mobile client browsing the Web using a wireless Personal Digital Assistant PDA. A wireless network analyzer is used to collect traces of the TCP/IP network traffic generated to and from the wireless PDA. Multi-layer protocol analysis is used to assess...
- Tags: Web, Performance, Wireless PDA, Analysis, Wireless Network Analyzer, Protocol Analysis, PDAs, Performance Management, Wi-Fi, Wireless, Handhelds, Hardware, Human Resources, Workforce Management
- White papers
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