www.bonwin.weebly.com

Start betting at BetonMarkets.

Playing on BetonMarkets is just like trading in financial markets.

www.bigkim.weebly.com

Are You at Risk? There is no stereotypical alcoholic. Alcoholics come in all shapes and sizes, and although many people think of “street people” when they think of alcoholics, homeless alcoholics account for only a small percentage of the total.

- Anonymous Surfing
- Watch your favourite TV program- Protect your Privacy- Secure Encrypted connection- Unblock Skype and use VOIP freely!- Stay annonymous- Unblock facebook, blogger, blogspot- Unrestricted access to the Internet- Unblock web sites

Click on the image for your best VPN

History
 Until the end of the 1990s, networked computers were connected through expensive leased lines and/or dial-up phone lines.

Virtual Private Networks reduce network costs because they avoid a need for physical leased lines that individually connect remote offices (or remote users) to a private Intranet (internal network). Users can exchange private data securely, making the expensive leased lines unnecessary.

Different VPN systems can include a lot of variation, such as:

• The protocols they use to tunnel the traffic
• The tunnel's termination point, i.e., customer edge or network provider edge
• Whether they offer site-to-site or remote access connectivity
• The levels of security provided
• The OSI layer they present to the connecting network, such as Layer 2 circuits or Layer 3 network connectivity

Some classification schemes are discussed in the following sections...

Security mechanisms

Secure VPNs use cryptographictunneling protocols to provide confidentiality by blocking intercepts and packet sniffing, allowing sender authentication to block identityspoofing, and provide messageintegrity by preventing message alteration.

Secure VPN protocols include the following:

• IPsec (Internet Protocol Security) was originally developed for IPv6, which requires it. This standards-based security protocol is also widely used with IPv4. Layer 2 Tunneling Protocol frequently runs over IPsec.
• Transport Layer Security (SSL/TLS) can tunnel an entire network's traffic, as it does in the OpenVPN project, or secure an individual connection. A number of vendors provide remote access VPN capabilities through SSL. An SSL VPN can connect from locations where IPsec runs into trouble with Network Address Translation and firewall rules.
• Datagram Transport Layer Security (DTLS), is used in Cisco's next-generation VPN product, Cisco AnyConnect VPN, to solve the issues SSL/TLS has with tunneling over TCP.
• Microsoft Point-to-Point Encryption (MPPE) works with their Point-to-Point Tunneling Protocol and in several compatible implementations on other platforms.
• Microsoft introduced Secure Socket Tunneling Protocol (SSTP) in Windows Server 2008 and Windows Vista Service Pack 1. SSTP tunnels Point-to-Point Protocol (PPP) or Layer 2 Tunneling Protocol traffic through an SSL 3.0 channel.
• MPVPN (Multi Path Virtual Private Network). Ragula Systems Development Company owns the registered trademark "MPVPN".
• Secure Shell (SSH) VPN -- OpenSSH offers VPN tunneling to secure remote connections to a network or inter-network links. This should not be confused with port forwarding. OpenSSH server provides limited number of concurrent tunnels and the VPN feature itself does not support personal authentication.

Authentication Tunnel endpoints must authenticate before secure VPN tunnels can establish.

User-created remote access VPNs may use passwords, biometrics, two-factor authentication or other cryptographic methods.

Network-to-network tunnels often use passwords or digital certificates, as they permanently store the key to allow the tunnel to establish automatically and without intervention from the user nia

Routing Tunneling protocols can be used in a point-to-pointtopology that would theoretically not be considered a VPN, because a VPN by definition is expected to support arbitrary and changing sets of network nodes. But since most router implementations support a software-defined tunnel interface, customer-provisioned VPNs often are simply defined tunnels running conventional routing protocols.

On the other hand provider-provided VPNs (PPVPNs) need to support coexisting multiple VPNs, hidden from one another, but operated by the same service provider.

PPVPN Building blocks Depending on whether the PPVPN runs in layer 2 or layer 3, the building blocks described below may be L2 only, L3 only, or combine them both. Multiprotocol Label Switching (MPLS) functionality blurs the L2-L3 identity.