Clear-intrusion-flag | HP 4100gl, 2650 (J4899A/B), 2600-PWR, 6108

Configuring and Monitoring Port Security

Port Security Command Options and Operation

Syntax: port-security [e] < port-list> (- Continued -)

action < none send-alarm send-disable >

Specifies whether an SNMP trap is sent to a network man- agement station. Operates when:

•Learn mode is set to learn-mode static (static-learn) or learn-mode configured (static-configured) and the port detects an unauthorized device.

•Learn mode is set to learn-mode continuous and there is a MAC address change on a port.

none (the default): Prevents an SNMP trap from being sent.

send alarm: Causes the switch to send an SNMP trap to a network management station.

send-disable: Available only with learn-mode configured and learn-mode static. Causes the switch to send an SNMP trap to a network management station and disable the port. If you subsequently re-enable the port without clearing the port’s intrusion flag, the port will block further intruders, but the switch will not disable the port again until you reset the intrusion flag. See the Note on page 9-31.

For information on configuring the switch for SNMP management, refer to the Management and Configuration Guide for your switch.

clear-intrusion-flag

Clears the intrusion flag for a specific port. (Refer to “Reading Intrusion Alerts and Resetting Alert Flags” on page 9-29.)

9-9

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HP 4100gl, 2650 (J4899A/B), 2626 (J4900A/B), 2600-PWR, 6108 manual Clear-intrusion-flag

Contents

Access Security Guide Page December Access Security Guide Publication Number Contents Terminology Operating Rules and Notes Contents Overview Client Options General FeaturesConfiguring the Switch To Access a Radius Server Messages Related to TACACS+ Operation Operating Notes Viewing the Switch’s Current Authentication ConfigurationConfiguring the Switch’s TACACS+ Server Access General Authentication Process Using a TACACS+ Server Local Authentication Process Configuring Secure Shell SSH Vii Generate the Switch’s Server Host CertificateCommon Errors in SSL Setup Viii Configuring and Monitoring Port Security Operating Notes for Port Security ContentsAccess Levels Web Configuring IP Authorized Managers Switch manual set includes the following About Your Switch Manual Set Xii Feature IndexFeature Configuration Management Guide Xiii Product Documentation Feature Tftp Xiv Getting Started Contents Getting Started Overview of Access Security FeaturesAccess security features covered in this guide include Introduction Fabric than if you use only local passwords Management Access Security Protection Management Access Security Protection General Switch Traffic Security Guidelines Conventions Feature Descriptions by ModelCommand Syntax Statements Port Identity Examples Command PromptsScreen Simulations Getting Help in the Menu Interface Sources for More Information Main Menu of the Menu interface, select Run SetupNeed Only a Quick Start? IP Addressing Interpreting LED behavior To Set Up and Install the Switch in Your Network This page is intentionally unused Configuring Username and Password Security Web browser interface Overview T e U t i o n Console Passwords Configuring Local Password SecurityMenu Setting Passwords To set a new password Commands Used in This Section CLI Setting Passwords and UsernamesContinue Deletion of password protection? No Click on the Security tab Web Setting Passwords and UsernamesClick on Device Passwords Front-Panel Security When Security Is Important Clear Button ResetClearFront-Panel Button Functions Press and hold the Reset button Reset ButtonRestoring the Factory Default Configuration ResetClear Self Test Configuring Front-Panel Security Syntax show front-panel-security Default Front-Panel Security Settings Either form of the command enables password-clear Example of Re-Enabling the Clear Button’s Default Operation Changing the Operation of the Reset+Clear Combination Management access to the switch Password RecoveryDisabling or Re-Enabling the Password Recovery Process Default configuration settings No front-panel-security password-recovery Steps for Disabling Password-Recovery 11. Example of the Steps for Disabling Password-Recovery Password Recovery Process This page is intentionally unused Overview Client Options General Features Overview Radius server uses the device MAC address as the username Lock a particular device to a specific switch and portClient Options General Features Web-based Authentication How Web and MAC Authentication OperateAuthenticator Operation Progress Message During Authentication MAC-based Authentication How Web and MAC Authentication Operate Terminology Management Operating Rules and Notes Operating Rules and Notes Do These Steps Before You Configure Web/MAC Authentication General Setup Procedure for Web/MAC Authentication General Setup Procedure for Web/MAC Authentication Aabbcc-ddeeff Aa-bb-cc-dd-ee-ff Aabbccddeeff Addresses Radius Server Configuration Commands Configuring the Switch To Access a Radius Server Example of Configuring a Switch To Access a Radius Server Overview Configuring Web Authentication Command Configuration Level Configure the Switch for Web-Based Authentication Syntax no aaa port-access web-based e port-list Syntax aaa port-access web-based e port-list max-requests Default 30 seconds Configuring MAC Authentication on Switch Configure the Switch for MAC-Based Authentication Syntax Default 30seconds Command Show Status and Configuration Web-Based Authentication Show Status and Configuration of MAC-Based Authentication Syntax show port-access port-list mac-based clients Timed out-unauth vlan Show Client Status This page is intentionally unused TACACS+ Authentication Example of TACACS+ Operation TACACS+ Authentication Terminology Used in Tacacs Applications TACACS+ Authentication General System Requirements General Authentication Setup Procedure Determine the following Using the Encryption Key on TACACS+ Authentication Before You Begin Configuring TACACS+ on the SwitchSwitch offers three command areas for TACACS+ operation This example shows the default authentication configuration CLI Commands Described in this SectionViewing the Switch’s Current Authentication Configuration Example of the Switch’s TACACS+ Configuration Listing Configuring the Switch’s Authentication Methods Method/privilege path. Available only if the primary method AAA Authentication ParametersName Default Range Function Authentication for the access being configured is local Login Primary to Local authentication Primary/Secondary Authentication Table ProCurve config# aaa authentication num-attempts Switch or your TACACS+ server Configuring the Switch’s TACACS+ Server Access Syntax tacacs-server host ip-addr key key-string Name Default Range Tacacs-server host ip-addr None Details on Configuring Tacacs Servers and Keys Timeout 1 Name Default Range Key key-string None null To configure north01 as a per-server encryption key ProCurveconfig# no tacacs-server host Changes without executing write mem How Authentication OperatesGeneral Authentication Process Using a TACACS+ Server TACACS+ Authentication Terminal must initiate a new session before trying again Local Authentication ProcessAuthentication General Operation Using the Encryption KeyEncryption Options in the Switch ProCurveconfig# tacacs-server key north40campus CLI Message Meaning Tacacs-server configurationMessages Related to TACACS+ Operation Operating Notes TACACS+ Authentication Radius Authentication and Accounting Radius Authentication and Accounting Web Series 2600, 2600-PWR, and 2800 switches Port-Access Host See Radius Server Switch Operating Rules for Radius Preparation for Configuring Radius on the Switch General Radius Setup Procedure Radius Authentication Commands Configuring the Switch for Radius Authentication Radius server documentation Outline of the Steps for Configuring Radius Authentication Radius Authentication and Accounting Example Configuration for Radius Authentication Configuring Radius Accounting instead of continuing here Configure the Switch To Access a Radius Server Radius Authentication and Accounting Configure the Switch’s Global Radius Parameters T e Radius Authentication and Accounting Listings of Global Radius Parameters Configured In Figure Local Authentication Process Radius Accounting Commands Configuring Radius Accounting This section assumes you have already Access methodsConfigured one or more Radius servers to support the switch Under Port-Based Access Control Operating Rules for Radius Accounting Steps for Configuring Radius Accounting Configure the Switch To Access a Radius Server Key key-string Radius Authentication and Accounting Start-Stop Syntax no aaa accounting update periodic 1 General Radius Statistics Viewing Radius Statistics Term Definition Values for Show Radius Host Output Figure Syntax show authentication Radius Authentication Statistics Radius Accounting Statistics 14. Listing the Accounting Configuration in the Switch 17. Search Order for Accessing a Radius Server Changing RADIUS-Server Access Order 18. Example of New Radius Server Search Order Message Meaning Messages Related to Radius Operation This page is intentionally unused Configuring Secure Shell SSH Configuring Secure Shell SSH Client Public Key Authentication Model Using these algorithms unless otherwise noted Use a key to authenticate itself to the switch Terminology Public Key Formats Prerequisite for Using SSH Primary SSH AuthenticationSSH Options Configuring Secure Shell SSH General Operating Rules and Notes SSH-Related Commands in This Section Configuring the Switch for SSH OperationAssign Local Login Operator and Enable Manager Password Example of Configuring Local Passwords Generate the Switch’s Public and Private Key Pair Pair automatically disables SSH To the switch using the earlier pairCLI kill command Operation Provide 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 e Modulus n Switch’s Public and Private Key Pair on To enable SSH on the switch 49, 80, 1506, Always 896 bits U t i o n T e Configure the Switch for SSH Authentication Option B Configuring the Switch for Client Public-Key SSH Copies a public key file into the switch Use an SSH Client To Access the Switch Further Information on SSH Client Public-Key Authentication Configuring Secure Shell SSH 14. Example of a Client Public Key Ascii Property Supported Comments Value Deletes the client-public-key file from the switch U t i o n 00000K Peer unreachable Messages Related to SSH Operation Generating new RSA host key. If Steps for Configuring and Using SSL for Switch Configuring Secure Socket Layer SSL Configuring Secure Socket Layer SSL Server Certificate authentication with User Password Otherwise noted 3DES 168-bit, 112 EffectiveRC4 40-bit, 128-bit Configuring Secure Socket Layer SSL Prerequisite for Using SSL General Operating Rules and Notes SSL-Related CLI Commands in This Section Configuring the Switch for SSL Operation Security Tab Password Button Earlier certificate Generate the Switch’s Server Host CertificateParticular switch/client session, and then discarded Verified unequivocally CLI To Generate or Erase the Switch’s Server Certificate with Field Name Description Comments on Certificate FieldsCertificate Field Descriptions For example, to generate a key and a new host certificate For example, to display the new server host certificate Can resume SSL operation Configuring Secure Socket Layer SSL Configuring Secure Socket Layer SSL Web browser Interface showing current SSL Host Certificate Configuring Secure Socket Layer SSL Example of a Certificate Request and Reply T e Execute no web-management ssl Using the CLI interface to enable SSLUsing the web browser interface to enable SSL Zeroize the switch’s host certificate or certificate key. Enable SLL Port number Selection Error During Possible Cause Common Errors in SSL Setup This page is intentionally unused Operating Rules for Authorized-Client Configuring Port-Based Access Control Configuring Port-Based Access Control Why Use Port-Based Access Control? Configuring Port-Based Access Control Example of an 802.1X Application How 802.1X Operates Example of Supplicant Operation Switch-Port Supplicant Operation Authenticator at the same time 802.1X standard General Operating Rules and Notes Configuring Port-Based Access Control Do These Steps Before You Configure 802.1X Operation General Setup Procedure for Port-Based Access Control Authenticators operate as expected Overview Configuring 802.1X Authentication on Switch Configuring Port-Based Access Control 802.1X Authentication Commands Configuring Switch Ports as 802.1X AuthenticatorsEnable 802.1X Authentication on Selected Ports Quiet-period 0 Max-requests 1 Clears authenticator statistics counters Example of 802.1X Port-Access Authentication Configure the 802.1X Authentication Method Enter the Radius Host IP Addresses Enable 802.1X Authentication on the Switch Introduction 802.1X Open Vlan Mode802.1X-Related Show Commands Radius server configuration Membership in the Vlan Use Models for 802.1X Open Vlan Modes 802.1X Open Vlan Mode 1X Open Vlan Mode Options 802.1X Per-Port Configuration Port Response Condition Rule Multiple Authenticator Ports Using Before you configure the 802.1X Open Vlan mode on a port Setting Up and Configuring 802.1X Open Vlan Mode Mised by an unauthorized client Vlan Operation Activate authentication on the switchPort-Security To Allow Only 802.1X Devices on ProCurveconfig# aaa authentication port-access eap-radius 802.1X Open Vlan Operating Notes ProCurveconfig# aaa port-access authenticator e A10 Enables 802.1X authentication on the port 802.1X Authentication Commands 802.1X Supplicant Commands Default supplicant parameters or any previously configured Enter secret password Repeat secret password Syntax aaa port-access supplicant ethernet port-list Max-start 1 Show Commands for Port-Access Authenticator Displaying 802.1X Configuration Statistics, and Counters Show port-access authenticator Syntax Config e port-list Viewing 802.1X Open Vlan Mode Status Authenticator Open Vlan Mode Status802.1X authentication Access Control No Pvid The port is not an untagged member of any Vlan Status Indicator MeaningCurrent Vlan ID 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 1X Operating Messages Messages Related to 802.1X Operation Configuring and Monitoring Port Security Cast traffic Configuring and Monitoring Port SecurityBasic Operation Blocking Unauthorized Traffic Switch C Physical Topology Logical Topology for Access to Switch aSwitch B Switch a Planning Port Security Acquires and maintains authorized addresses Port Security Command Options OperationPort Security Commands Used in This Section Commands 00f031-423fc1 4 b0-880a80 the authorized address 080090-1362f2 Address-limit integer Clear-intrusion-flag Assigned/Authorized MAC Addresses Displaying Current Port Security SettingsRetention of Static MAC Addresses Learned MAC Addresses Using the CLI To Display Port Security Settings Specifying Authorized Devices and Intrusion Responses Configuring Port Security Adding a MAC Address to an Existing Port List Example of Adding a Second Authorized Device to a Port Example of Adding an Authorized Device to a Port See the MAC Address entry in the table on Device’s MAC address. For example Remove 0c0090-123456 from the Authorized Address list Address configuration. Refer to the Note on Example of Port A1 After Removing One MAC Address MAC Lockdown Configuring and Monitoring Port Security Differences Between MAC Lockdown and Port Security MAC Lockdown Operating Notes Deploying MAC Lockdown MAC Lockdown Deployed At the Network Edge Provides Security Inside the Core Network as well, not just on the edge Edge switchesAddress and stealing data External Network X e d U s e r s 11. Listing Locked Down Ports MAC Lockout Configuring and Monitoring Port Security 12. Listing Locked Out Ports Port Security and MAC Lockout Operating Rules for IP Lockdown Using the IP Lockdown CommandIP lockdown command operates as follows IP Lockdown Click on Port Security Web Displaying and Configuring Port Security FeaturesReading Intrusion Alerts and Resetting Alert Flags Log command displays the Event Log How the Intrusion Log Operates It detects Resetting Alert FlagsFlags As follows 15. Example of the Intrusion Log Display Type I Intrusion log to display the Intrusion Log Configuring and Monitoring Port Security List intrusion log content 18. Example of Port Status Screen After Alert Flags Reset Event Log lists port security intrusions as Using the Event Log To Find Intrusion Alerts Operating Notes for Port Security Configuring and Monitoring Port Security Traffic/Security Filters ProCurve Series 2600/2600-PWR and 2800 Switches 10-2 10-3 Filter for the Actions Shown in Figure Operating Rules for Source-Port Filters Using Source-Port Filters 10-5 Configuring a Source-Port Filter 10-6 ProCurveconfig# filter source-port trk1 drop trk2,10-15 Source Port Destination Action Ports Viewing a Source-Port Filter10-7 10-8 Filter Indexing 10-9 Editing a Source-Port Filter 10-10 Using Named Source-Port FiltersDefining and Configuring Named Source-Port Filters Operating Rules for Named Source-Port Filters 10-11 10-12 Sample Configuration for Named Source-Port FiltersViewing a Named Source-Port Filter Applying Example Named Source-Port Filters Source Port 10-14 10-15 10-16 10-17 10-18 Operating Notes 11-1 Using Authorized IP Managers Using Authorized IP Managers Authorized IP Manager Features You can configure Access LevelsConfiguration Options 11-4 Defining Authorized Management StationsOverview of IP Mask Operation 11-5 Menu Viewing and Configuring IP Authorized ManagersSwitch Configuration … IP Authorized Managers From the console Main Menu, select Authorized IP Managers Commands Used in This Section CLI Viewing and Configuring Authorized IP ManagersListing the Switch’s Current Authorized IP Managers IP Mask Configuring IP Authorized Managers for the Switch11-7 11-8 Address of the authorized manager you want to delete Analysis of IP Mask for Single-Station Entries Web Configuring IP Authorized ManagersConfiguring One Station Per Authorized Manager IP Entry Building IP Masks Any value from 0 to 11-10 11-11 Additional Examples for Authorizing Multiple Stations Operating Notes Index Index See RADIUS. message See SSH. proxy Web server … Quick start … Show accounting … 5-28 show authentication … See RADIUS. troubleshooting Vlan This page is intentionally unused December