Installing Telnet on VMware vRealize Infrastructure Navigator 2.0

Products

• VMware
• VMware vCenter Server

Issue/Introduction

For security reasons, Telnet is not installed by default in the VMware vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator) appliance. However, Telnet may be useful for troubleshooting potentially blocked ports.

This article provides information on temporarily installing and removing Telnet for troubleshooting purposes.

Environment

VMware vCenter Infrastructure Navigator 2

Resolution

In vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator), Secure Shell (SSH) is enabled by default. If you have previously disabled SSH, enabling it again on the virtual machine may be helpful.

By enabling SSH, you can:

• Use putty rather than the console in the vSphere Client
  
• Use a program such as WinSCP to copy the required rpm file to the vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator).
  

To re-enable SSH, open a console in the vSphere Client, login as root, and enter:

service sshd start

To install and use Telnet:

1. Copy the attached rpm package to the /tmp directory of the vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator) virtual machine.
   
   Note: A program such as WinSCP may be used to complete this action.
   
   
   
2. Install Telnet:
   
   rpm -ivh telnet-1.2-134.40.x86_64.rpm
   
   
3. Troubleshoot the relevant port. For example, if you are troubleshooting connectivity between vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator) and VMware vCenter Server, type:
   
   telnet smtp_server 443
   
   
4. Remove the Telnet from vRealize Infrastructure Navigator (formerly known as VMware vCenter Infrastructure Navigator):
   
   rpm -e telnet-1.2-134.40
   
   
5. Delete the rpm file:
   
   rm /tmp/telnet-1.2-134.40.x86_64.rpm
   
   
6. If you have previously enabled SSH, you have the option to disable it by typing:
   
   service sshd stop

Additional Information

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