![]() ![]() This is because Port Address Translation (PAT) is used on the connection. The main difference is that when using client mode, the devices that exist behind the client (on its inside interface) are not directly accessible by the devices on the central internal network. The Easy VPN client has two different modes that are available: client mode and network extension mode (NEM). The client can be configured with multiple servers (up to 10) and will attempt to establish a connection going down the list of configured servers in eight-second intervals. The basic process works by having the server configuration define a policy that will be downloaded to the client and used to set up the correct parameters when establishing a tunnel between the server and the client. The client side (hardware), on the other hand, is limited to the ASA 5505. It is important to note that the Easy VPN feature is not limited to using an ASA 5505 as the server-side device it can be configured to work with other Cisco ASA models, VPN concentrators, and Cisco IOS devices. This section will be brief and touch on these concepts. There are a couple of concepts about the EZ VPN feature that need to be reviewed before getting into the configuration steps. The configuration steps that are shown in this article assume that ASA policy has been configured to allow the traffic in the first place, if this has not yet been done do it first before beginning the steps in this article. This article will take you through the steps that are required to configure an ASA 5505 as an Easy VPN Server and as an Easy VPN client specifically using the Network Extension Mode (NEM). This feature enables a remote office to obtain an ASA 5505 and implement a VPN solution that connects them to a central location with five commandsor one screen if you use the Cisco's Adaptive Security Device Manager (ASDM) GUI management tool. ![]() One of Cisco's answers to this problem is the creation of the Easy VPN (EZVPN) hardware client that is available on the Adaptive Security Appliance (ASA) model 5505. One of the problems that can be found is the complexity of the configuration that is required for both the central location (headend) and the remote offices. When configured correctly, VPNs are highly secure and provide the remote offices mostly seamless access to a central internal network. CCNA Routing and Switching 200-120 Network Simulatorįor those looking to secure their remote network locations, one of the most popular (and cheap) options to use is a Virtual Private Network (VPN). ![]()
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February 2023
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