Syntax tacacs-server host ip-addr key key-string | HP 4100gl

TACACS+ Authentication

Configuring TACACS+ on the Switch

Syntax: tacacs-server host < ip-addr> [key < key-string>]

Adds a TACACS+ server and optionally assigns a server-specific encryption key.

[no] tacacs-server host < ip-addr>

Removes a TACACS+ server assignment (including its server specific encryption key, if any).

tacacs-server key <key-string>

Enters the optional global encryption key.

[no] tacacs-server key

Removes the optional global encryption key. (Does not affect any server-specific encryption key assignments.)

tacacs-server timeout < 1 . . 255 >

Changes the wait period for a TACACS server response. (Default: 5 seconds.)

Note on Encryption Keys

Encryption keys configured in the switch must exactly match the encryption keys configured in TACACS+ servers the switch will attempt to use for authentication.

If you configure a global encryption key, the switch uses it only with servers for which you have not also configured a server-specific key. Thus, a global key is more useful where the TACACS+ servers you are using all have an identical key, and server-specific keys are necessary where different TACACS+ servers have different keys.

If TACACS+ server “X” does not have an encryption key assigned for the switch, then configuring either a global encryption key or a server-specific key in the switch for server “X” will block authentication support from server “X”.

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HP 4100gl manual Syntax tacacs-server host ip-addr key key-string

Contents

Access security guide Hp procurve Series 4100gl switches Page HP Procurve Series 4100GL Switches Access Security Guide Publication Number Contents Controlling Web Browser Interface Access When Configuring the Switch for Radius Authentication Controlling Web Browser Interface Access When Using Radius Authentication Further Information on SSH Client Public-Key Authentication General Setup Procedure for Configuring Switch Ports To Operate As Supplicants for802.1x Connections to Other Switches Operating Rules for Authorized-Client How RADIUS/802.1x Authentication Affects Vlan Operation Port Security Command Options and OperationWeb Displaying and Configuring Port Security Features Resetting Alert Flags Operating Notes for Port Security Defining Authorized Management Stations Page Getting Started Contents Getting Started Overview of Access Security FeaturesIntroduction Xiii Simulating Display Output Command Syntax ConventionsCommand Prompts Related Publications Screen Simulations Getting Started Getting Documentation From the Web Click on technical support Sources for More Information To Set Up and Install the Switch in Your Network Run SetupNeed Only a Quick Start? Main Menu of the Menu interface, selectPage Configuring Username and Password Security Configuring Username and Password Security Feature Default MenuOverview Level Actions Permitted Passwords are case-sensitive Configuring Local Password Security Menu Setting PasswordsTo set a new password Console Passwords CLI Setting Passwords and Usernames Continue Deletion of password protection? NoConfiguring Manager and Operator Passwords Commands Used in This Section Web Setting Passwords and Usernames Click on Device PasswordsClick on the Security tab Enter TACACS+ Authentication Using TACACS+ Authentication Messages Operating Notes TACACS+ Authentication Example of TACACS+ Operation TACACS+ Authentication Terminology Used in Tacacs Applications General System Requirements General Authentication Setup Procedure Result in Operator read-only access. Thus, when configuring Additional features that the application offersAlways used as the secondary access control method Determine the following Telnet Configuring TACACS+ on the Switch CLI Commands Described in this SectionCommand Before You Begin Viewing the Switch’s Current Authentication Configuration This example shows the default authentication configuration Configuring the Switch’s Authentication Methods AAA Authentication Parameters Name Default Range FunctionAuthentication for the access being configured is local Method/privilege path. Available only if the primary method Primary/Secondary Authentication Table Login Primary to Local authentication HPswitchconfig# aaa authentication num-attempts Configuring the Switch’s TACACS+ Server Access TACACS+ server Syntax tacacs-server host ip-addr key key-string Name Default Range None Timeout 1 None null HPswitchconfig# no tacacs-server host To configure north01 as a per-server encryption key Changes without executing write mem How Authentication OperatesGeneral Authentication Process Using a TACACS+ Server TACACS+ Authentication Local Authentication Process Authentication Using the Encryption Key HPswitchconfig# tacacs-server key north40campus Tacacs-server configuration Messages Related to TACACS+ OperationOperating Notes CLI Message Meaning Rized persons Radius Authentication and Accounting Controlling Web Browser Interface Access When Using Radius Port-Access Radius Authentication and Accounting Terminology Switch Operating Rules for Radius General Radius Setup Procedure Preparation for Configuring Radius on the Switch Radius Authentication Commands Configuring the Switch for Radius AuthenticationOutline of the Steps for Configuring Radius Authentication Used on the specified Radius server. Default null Configure the global Radius parametersRadius server documentation Server IP address Local none Example Configuration for Radius Authentication Authentication Process on Configure the Switch To Access a Radius Server Configuring Radius Accounting instead of continuing here Radius Authentication and Accounting Configure the Switch’s Global Radius Parameters Key global-key-string To an authentication request before counting the attempt as Local Authentication Process Listings of Global Radius Parameters Configured In Figure Word pair for the level you want to enter On page 3-5 before continuing here Configuring Radius AccountingRadius Accounting Commands Operating Rules for Radius Accounting Steps for Configuring Radius Accounting Configure the Switch To Access a Radius Server Radius Authentication and Accounting Example of Configuring Accounting Types Start-Stop Update period Viewing Radius Statistics General Radius Statistics Term Definition PendingRequests Radius Authentication Statistics 14. Listing the Accounting Configuration in the Switch Radius Accounting Statistics Changing RADIUS-Server Access Order 17. Search Order for Accessing a Radius Server 18. Example of New Radius Server Search Order Messages Related to Radius Operation Message MeaningPage Configuring Secure Shell SSH Configuring the Switch for SSH Operation Client Public Key Authentication Model Configuring Secure Shell SSH DES 56-bit Use a key to authenticate itself to the switch3DES 168-bit Prerequisite for Using SSH Public Key Formats SSH Options Switch Primary SSH Authenticate Primary Switch Manager Ssh enable localEnable Ssh enable tacacs Ssh enable radius Configuring Secure Shell SSH General Operating Rules and Notes Configuring the Switch for SSH Operation SSH-Related Commands in This Section Generating the Switch’s Public and Private Key Pair Example of Configuring Local Passwords Pair automatically disables SSH To the switch using the earlier pairCLI kill command Operation Providing the Switch’s Public Key to ClientsFor example, to generate and display a new key Example of a Public Key Generated by the Switch Inserted Bit Exponent Modulus Switch’s Public and Private Key Pair on To enable SSH on the switch Version of SSH to accept connections from. default 1-or-2 On the switch by appearing to be you Configuring the Switch for SSH Authentication Option a Configuring SSH Access for Password-Only SSH U t i o n Configures Use an SSH Client To Access the Switch 14 shows how to check the results of the above commands Further Information on SSH Client Public-Key Authentication 15. Example of a Client Public Key Property Supported Comments Value Ascii Show crypto client-public-key babble fingerprint Deletes the client-public-key file from the switch Messages Related to SSH Operation 00000K Peer unreachable Key for the switch Assigning a Local Login Operator Comments on certificate fields Server Certificate authentication with User Password Configuring Secure Socket Layer SSL 3DES 168-bit, 112 Effective RC4 40-bit, 128-bit Prerequisite for Using SSL General steps for configuring ssl include Client Preparation Provided with your browser General Operating Rules and Notes SSL-Related CLI Commands in This Section Configuring the Switch for SSL OperationAssigning a Local Login Operator and Enable ManagerPassword Security Tab Password Button Generating the Switch’s Server Host Certificate Particular switch/client session, and then discardedVerified unequivocally Earlier certificate CLI commands used to generate a Server Host Certificate CLI Field Name Description Certificate Field DescriptionsFor example, to generate a key and a new host certificate CLI Command to view host certificates Host-cert commandCan resume SSL operation For example, to display the new server host certificate Installed certificate Select the Generate Certificate buttonIii Select Self signed certificate in the type box New key then just select current from the list Configuring Secure Socket Layer SSL Web browser Interface showing current SSL Host Certificate Configuring Secure Socket Layer SSL Certificate Request Certificate Request Reply T e Zeroize the switch’s host certificate or certificate key . Execute no web-management ssl Enable SLL Port number Selection Common Errors in SSL setup Error During Possible CausePage Messages Related to 802.1x Operation -47 General Setup Procedure for Port-Based Access ControlGeneral Operating Rules and Notes -9 Why Use Port-Based Access Control? General FeaturesRefer to Radius Authentication and Accounting on 802.1x on the Series 4100GL switches includes the following Configuring Port-Based Access Control Authenticating One Switch to Another .1x authentication also Authenticator Operation How 802.1x Operates Switch-Port Supplicant Operation Example of Supplicant Operation Terminology 802.1x standard General Operating Rules and Notes Configuring Port-Based Access Control General Setup Procedure for Port-Based Access Control Do These Steps Before You Configure 802.1x Operation Overview Configuring 802.1x Authentication on Switch Authenticators operate as expected Configuring Port-Based Access Control Configuring Switch Ports as Authenticators 802.1x Authentication Commands Enable 802.1x Authentication on Selected Ports To activate 802.1x authentication on the switch Tx-period 0 Clears authenticator statistics counters Configure the 802.1x Authentication Method LocalEap-radius Chap-radius Enable 802.1x Authentication on the Switch Enter the Radius Host IP Addresses Introduction 802.1x-Related Show Commands Radius server configuration802.1x Open Vlan Mode Use Models for 802.1x Open Vlan Modes Tagged Vlan as the Unauthorized-Client Vlan Port as a static, tagged member of the VLAN, membership 802.1x Per-Port Configuration Port Response Condition Rule Multiple Authenticator Ports Using Setting Up and Configuring 802.1x Open Vlan Mode Before you configure the 802.1x Open Vlan mode on a port Mised by an unauthorized client Vlan Operation Activate authentication on the switchPort-Security To Allow Only 802.1x Devices on HPswitchconfig# aaa authentication port-access eap-radius 802.1x Open Vlan Operating Notes Action none send-alarm send-disable Enables 802.1x authentication on the port 802.1x Authentication Commands 802.1x Supplicant Commands Authenticator at the same time Specified ports Syntax aaa port-access supplicant ethernet port-list Enter secret password Repeat secret password Max-start 1 Displaying 802.1x Configuration, Statistics, and Counters Show Commands for Port-Access Authenticator Viewing 802.1x Open Vlan Mode Status Page Open Vlan Mode Status To the port Configuring Port-Based Access Control Switch reboots Show Commands for Port-Access SupplicantSupplicant port detects a different authenticator device How RADIUS/802.1x Authentication Affects Vlan Operation Example of an Active Vlan Configuration Otherwise, port A2 is not listed Assignment Messages Related to 802.1x Operation 1x Operating MessagesPage Retention of Static Addresses Basic OperationBlocking Unauthorized Traffic -3 Trunk Group Exclusion -4 Configuring and Monitoring Port Security Basic Operation Blocking Unauthorized Traffic Trunk Group Exclusion Security Planning Port Security Port Security Command Options Operation Port Security Commands Used in This SectionCommands Acquires and maintains authorized addresses Port Security Parameters ModeAddress address-limit integer Mac-address mac-addr Clear- clear-intrusion-flag Retention of Static AddressesParameter Description Displaying Current Port Security Settings Using the CLI To Display Port Security Settings Configuring Port Security Configuring and Monitoring Port Security Example of Adding an Authorized Device to a Port Command option removes unwanted devices MAC addresses from Device’s MAC address. For exampleRemoving a Device From the Authorized List for a Port. This Entry in the table on To automatically become authorized Remove 0c0090-123456 from the Authorized Address list Click on Port Security Web Displaying and Configuring Port Security FeaturesReading Intrusion Alerts and Resetting Alert Flags How the Intrusion Log Operates Example of Multiple Intrusion Log Entries for the Same Port Flags Operates as followsIt detects Intrusion flag Type I Intrusion log to display the Intrusion Log 11. Example of the Intrusion Log Display List intrusion log content Intrusion Alert on port A1 14. Example of Port Status Screen After Alert Flags Reset Event Log lists port security intrusions as Operating Notes for Port Security Configuring and Monitoring Port Security Page Using Authorized IP Managers Building IP Masks Authorized IP Manager Features Using Authorized IP Managers Options Access LevelsYou can configure Defining Authorized Management Stations Overview of IP Mask Operation Menu Viewing and Configuring IP Authorized Managers Switch Configuration IP Authorized ManagersBuilding IP Masks on From the console Main Menu, select CLI Viewing and Configuring Authorized IP Managers Authorized IP Managers Commands Used in This Section Configuring IP Authorized Managers for the Switch IP Mask Click on Authorized Addresses Web Configuring IP Authorized ManagersAddress of the authorized manager you want to delete Configuring One Station Per Authorized Manager IP Entry Building IP MasksAuthorized 227 125 Manager IP Using Authorized IP Managers 125, or 127 can access the switch Building IP MasksAny value from 0 to IP Mask 255 249 Authorized Additional Examples for Authorizing Multiple StationsResults Using Authorized IP Managers Page Index Index See port access control OpenSSH … 4-3,5-2 operating notes See SSH. proxy Web server … Quick start … SSL See RADIUS. … 3-4 troubleshoot … 2-15 troubleshooting Index Page 5990-3032