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At a minimum, you should configure passwords and privileges at each switch port.

To prevent unauthorized access into your switch, you should configure one or more of these security features:

#Crypt method disappeared on ssh tunnel manager serial

Typically, you want network administrators to have access to your switch while you restrict access to users who dial from outside the network through an asynchronous port, connect from outside the network through a serial port, or connect through a terminal or workstation from within the local network. You can prevent unauthorized users from reconfiguring your switch and viewing configuration information. Preventing Unauthorized Access to Your Switch

#Crypt method disappeared on ssh tunnel manager how to

This chapter describes how to configure switch-based authentication on the Catalyst 3560 switch.

Configuring the Switch for Secure Copy Protocol.

Displaying Secure HTTP Server and Client Status.

Configuring Secure HTTP Servers and Clients.

Understanding Secure HTTP Servers and Clients.

Configuring the Switch for Secure Socket Layer HTTP.

Displaying the SSH Configuration and Status.

SSH Servers, Integrated Clients, and Supported Versions.

Configuring the Switch for Secure Shell.

Configuring the Switch for Local Authentication and Authorization.

Controlling Switch Access with Kerberos.

Configuring RADIUS Server Load Balancing.

Monitoring and Troubleshooting CoA Functionality.

Configuring the Switch for Vendor-Proprietary RADIUS Server Communication.

Configuring the Switch to Use Vendor-Specific RADIUS Attributes.

Configuring Settings for All RADIUS Servers.

Configuring RADIUS Authorization for User Privileged Access and Network Services.

Configuring RADIUS Login Authentication.

Establishing a Session with a Router if the AAA Server is Unreachable.

Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services.

Configuring TACACS+ Login Authentication.

Identifying the TACACS+ Server Host and Setting the Authentication Key.

Logging into and Exiting a Privilege Level.

Changing the Default Privilege Level for Lines.

Setting the Privilege Level for a Command.

Configuring Username and Password Pairs.

Setting a Telnet Password for a Terminal Line.

Protecting Enable and Enable Secret Passwords with Encryption.

Setting or Changing a Static Enable Password.

Default Password and Privilege Level Configuration.

Protecting Access to Privileged EXEC Commands.

Preventing Unauthorized Access to Your Switch.

Unsupported Commands in Cisco IOS Release 12.2(55)SE.Working with the Cisco IOS File System, Configuration Files, and Software Images.Configuring Cache Services By Using WCCP.Configuring Cisco IOS IP SLAs Operations.Configuring TelePresence E911 IP Phone Support.

Configuring EtherChannels and Link-State Tracking.Configuring LLDP, LLDP-MED, and Wired Location Service.Configuring DHCP Features and IP Source Guard.

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Configuring Flex Links and the MAC Address-Table Move Update Feature.

Configuring Optional Spanning-Tree Features.

Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling.

Configuring IEEE 802.1x Port-Based Authentication.

Configuring Switch-Based Authentication.

Configuring Cisco IOS Configuration Engine.

Assigning the Switch IP Address and Default Gateway.