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Cisco Systems VPN Client is a software application for connecting to virtual private networks based on Internet Key Exchange version 1. On July 29, 2011, Cisco announced the end of life of the product. No further product updates were released after July 30, 2012, and support ceased on July 29, 2014. [4]
It was originally written as an open-source replacement for Cisco's proprietary AnyConnect SSL VPN client, [7] which is supported by several Cisco routers. As of July 2023, support for several other proprietary VPN protocols is desired or in development: SonicWall NetExtender VPN support [8] Check Point SNX VPN support [9] H3C VPN support [10]
Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).
The ISAKMP/IKE implementation was jointly developed by Cisco and Microsoft. [16] Microsoft Windows 7 and Windows Server 2008 R2 partially support IKEv2 (RFC 7296) as well as MOBIKE (RFC 4555) through the VPN Reconnect feature (also known as Agile VPN). There are several open source implementations of IPsec with associated IKE capabilities.
Cisco PIX (Private Internet eXchange) was a popular IP firewall and network address translation (NAT) appliance.It was one of the first products in this market segment. In 2005, Cisco introduced the newer Cisco Adaptive Security Appliance (), that inherited many of the PIX features, and in 2008 announced PIX end-of-sale.
A VPN service can log the user's traffic, although this depends on the VPN provider. [15] A VPN service does not make the user immune to cyberattacks. [15] A VPN service is not in itself a means for good Internet privacy. The burden of trust is simply transferred from the ISP to the VPN service provider. [16] [17] A VPN service is not a VPN.
Cisco had already issued a patch, but asked that the flaw not be disclosed. [18] Cisco filed a lawsuit, but settled after an injunction was issued to prevent further disclosures. [19] With IOS being phased out on devices, IOS-XE adopted many improvements including updated defaults. Some use cases can now store secrets as one-way hashes.
WireGuard is designed to be extended by third-party programs and scripts. This has been used to augment WireGuard with various features including more user-friendly management interfaces (including easier setting up of keys), logging, dynamic firewall updates, dynamic IP assignment, [15] and LDAP integration. [citation needed]