Cisco VPN with command line

Configuring vpnc

Using vpnc as a Command Line VPN Client
The command entered does not require parameters. Specifies a password for authentication; with the user option on the command line, suppresses the password prompt in authentication dialog. Name of the connection entry. In many enterprises, Cisco VPNs are used to give remote developers controlled access to production web servers. VPNs can be an annoyance in day-to-day work, but they're a fact of life when managing complex hosting environments and working with most corporate networks. Post as a guest Name.

Installing vpnc

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Server Fault works best with JavaScript enabled. The command-line VPN client vpnc is a great solution to both problems. First, we need to install the vpnc client using the package manager for our operating system. Here are a few examples:. For Ubuntu you should prefix the command with "sudo" to execute it as root. Once vpnc is installed, we need to create a configuration file for each VPN we'll be connecting to. Edit the new file in the text editor of your choice. Fill in each line of information as needed for your VPN.

Specifies a password for authentication; with the user option on the command line, suppresses the password prompt in authentication dialog. If the password supplied is not valid, the VPN Client displays the authentication dialog on a subsequent request. After encrypting and using the password for the connection, the VPN Client clears the password in the. Using this option on the command line compromises security and is not recommended.

Suppresses prompting for a certificate password. Prompts for authentication information on the command line. Eliminates the GUI prompt that displays during a connection request from the command line. The VPN client prompts for username and password.

The password is displayed as asterisks. This example shows the vpnclient connect command that connects you to the Engineering Server using the profile name "engineering".

At this point, the VPN Client displays an authentication dialog box that prompts for your username and password. After you enter your name and password, authentication succeeds, and the command continues executing. Alternatively, to suppress the User Authentication window shown in Example , you can use the cliauth parameter.

The command line then prompts for username and password. Using the cliauth parameter avoids having a password display in clear text on the command line. The following command connects to the remote network without user interaction. Notice that the password appears on the command line in clear text. When you connect, you can display a notification using the vpnclient notify command:. The following session shows how to use the vpnclient notify command to display a notification from a network administrator.

To display your configuration for auto initiation, enter the following command:. The following command shows your auto initiation configuration for one access point. To suspend the stateful firewall, enter the following command:. To resume a suspended stateful firewall, enter the following command;. The following commands control the setting of the stateful firewall.

The first command output shows the response displayed when the stateful firewall is not enabled when the command is executed. The next two commands, executed after enabling the stateful firewall, first suspend the firewall and then resume it. To disconnect from your session, enter the following command:. The following command disconnects you from your secure connection. To generate status information about your connection, enter the following command:.

When entered without any of the optional parameters, the vpnclient stat command displays all status information. The following parameters are optional:. Restarts all connection counts from zero.

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