Simple to deploy and operate, the Cisco VPN Client allows organizations to establish end-to-end, encrypted VPN tunnels for secure connectivity for mobile. Downloads OpenVPN 2. All Softer there. 4.6 -- released on 2018.04.24 ()This is primarily a maintenance release with minor bugfixes and improvements, and one security relevant fix for the Windows Interactive Service.
VPN connectivity overview A virtual private network ( VPN) extends a across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running across a VPN may therefore benefit from the functionality, security, and management of the private network. VPN technology was developed to allow remote users and branch offices to securely access corporate applications and other resources. To ensure security, data would travel through secure tunnels and VPN users would use authentication methods – including passwords, tokens and other unique identification methods – to gain access to the VPN. In addition, Internet users may secure their transactions with a VPN, to circumvent and, or to connect to to protect personal identity and location to stay anonymous on the Internet. However, some Internet sites block access to known VPN technology to prevent the circumvention of their geo-restrictions, and many VPN providers have been developing strategies to get around these roadblocks. A VPN is created by establishing a virtual connection through the use of dedicated connections, virtual, or traffic.
A VPN available from the public Internet can provide some of the benefits of a (WAN). From a user perspective, the resources available within the private network can be accessed remotely. Traditional VPNs are characterized by a point-to-point topology, and they do not tend to support or connect, so services such as may not be fully supported or work as they would on a (LAN). Designers have developed VPN variants, such as (VPLS), and (L2TP), to overcome this limitation. Contents • • • • • • • • • • • • • • • • Types [ ] Early data networks allowed VPN-style remote connections through or through connections utilizing and (ATM) virtual circuits, provided through networks owned and operated.
These networks are not considered true VPNs because they passively secure the data being transmitted by the creation of logical data streams. They have been replaced by VPNs based on IP and IP/ (MPLS) Networks, due to significant cost-reductions and increased bandwidth provided by new technologies such as digital subscriber line (DSL) and fiber-optic networks. VPNs can be either remote-access (connecting a computer to a network) or site-to-site (connecting two networks). In a corporate setting, remote-access VPNs allow employees to access their company's from home or while travelling outside the office, and site-to-site VPNs allow employees in geographically disparate offices to share one cohesive virtual network.
A VPN can also be used to interconnect two similar networks over a dissimilar middle network; for example, two networks over an network. VPN systems may be classified by: • the tunneling protocol used to the traffic • the tunnel's termination point location, e.g., on the customer or network-provider edge • the type of topology of connections, such as site-to-site or network-to-network • the levels of security provided • the they present to the connecting network, such as Layer 2 circuits or Layer 3 network connectivity • the number of simultaneous connections.