Contents
Introduction
Wi-Fi Protected Access Pre-Shared Key (WPA-PSK) is a security mechanism used to authenticate and validate users on a wireless LAN (WLAN) or Wi-Fi connection. It is a variation of the WPA security protocol. WPA-PSK is also known as WPA2-PSK or WPA Personal. That feature alone makes this NETGEAR router worth considering, but the security specs-including WPA-PSK encryption, SPI and NAT firewall modes, pass-through VPN support push the WGTT634U into a realm of superior performance and enhanced security. Download keys Generate a new encryption keys. Read: Security & Insecurity in pre-shared key mode. WPA PSK (Raw Key) Generator. The Wireshark WPA Pre-shared Key Generator provides an easy way to convert a WPA passphrase and SSID to the 256-bit pre-shared ('raw') key used for key derivation. Directions: Type or paste in your WPA passphrase and SSID below. Wait a while. The PSK will be calculated by your browser.
This document describes a sample configuration for Wireless Protected Access (WPA) and WPA2 with a pre-shared key (PSK).
Prerequisites
Requirements
Cisco recommends that you have knowledge of these topics:
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- Familiarity with the GUI or the command-line interface (CLI) for the Cisco IOS® software
- Familiarity with the concepts of PSK, WPA, and WPA2
Components Used
The information in this document is based on Cisco Aironet 1260 Access Point (AP) that runs Cisco IOS Software Release 15.2JB.
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The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Configure
Configuration with GUI
This procedure describes how to configure WPA and WPA2 with a PSK in the Cisco IOS software GUI:
- Set up the Encryption Manager for the VLAN defined for the Service Set Identifier (SSID). Navigate to Security > Encryption Manager, ensure Cipher is enabled, and select AES CCMP + TKIP as the cipher to be used for both SSIDs.
- Enable the correct VLAN with the encryption parameters defined in Step 1. Navigate to Security > SSID Manager, and select the SSID from the Current SSID List. This step is common for both WPA and WPA2 configuration.
- In the SSID page, set Key Management to Mandatory, and check the Enable WPA checkbox. Select WPA from the drop-down list in order to enable WPA. Enter the WPA Pre-shared Key.
- Select WPA2 from the drop-down list in order to enable WPA2.
Configuration with CLI
Notes:
Use the Command Lookup Tool (registered customers only) in order to obtain more information on the commands used in this section.
The Output Interpreter Tool (registered customers only) supports certain show commands. Use the Output Interpreter Tool in order to view an analysis of show command output.
Use the Command Lookup Tool (registered customers only) in order to obtain more information on the commands used in this section.
The Output Interpreter Tool (registered customers only) supports certain show commands. Use the Output Interpreter Tool in order to view an analysis of show command output.
This is the same configuration done within the CLI:
Verify
In order to confirm that the configuration works properly, navigate to Association, and verify that the client is connected:
You can also verify the client association in the CLI with this syslog message:
Troubleshoot
Note: Refer to Important Information on Debug Commands before you use debug commands.
Use these debug commands in order to troubleshoot connectivity issues:
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- debug dot11 aaa manager keys - This debug shows the handshake that occurs between the AP and the client as the pairwise transient key (PTK) and group transient key (GTK) negotiate.
- debug dot11 aaa authenticator state-machine - This debug shows the various states of negotiations that a client passes through as the client associates and authenticates. The state names indicate these states.
- debug dot11 aaa authenticator process - This debug helps you diagnose problems with negotiated communications. The detailed information shows what each participant in the negotiation sends and shows the response of the other participant. You can also use this debug in conjunction with the debug radius authentication command.
- debug dot11 station connection failure - This debug helps you determine if the clients are failing the connection and helps you determine the reason for failures.