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# SSH Access to the Appliance

You can enable SSH access to the appliance. By default, SSH access to your appliance is disabled. For best security, it is strongly recommended that you enable SSH access only when necessary, such as for troubleshooting purposes.

Caution: By default, you are not prompted for a challenge/response when logging in using SSH. (This represents a change from the configuration of Connector Appliance.)

As a result, it is imperative that you change the default password for the “root” account on the ArcSight Management Center Appliance to a new, strong password as soon as possible. To obtain the default root password, contact ArcSight Customer Support.

Enablement options include:

- Disabled: No SSH access is enabled. This is the default value.

- Enabled: SSH access is always enabled.

- Enabled, only for 8 hours: SSH access is disabled automatically eight hours after it was enabled.

- Enabled, only during startup/reboot: SSH access is enabled during the time the appliance reboots and is starting up. It is disabled once all processes on the appliance are up and running. This option provides a minimal period of SSH access for situations such as when the appliance does not start successfully after a reboot.

  Note: Even if SSH is disabled on your appliance, you can access its console if you have it set up for remote access using the OpenText ProLiant Integrated Lights-Out (iLO) Advanced remote management card.

## Enabling or Disabling SSH Access

To enable or disable SSH access to your appliance:

1. Click Administration > Setup >System Admin from the top-level menu bar.

2. Click SSH in the System section.

3. Select an SSH enablement option.

4. Confirm the option. The change takes place immediately.

## Connecting to Your Appliance Using SSH

Once you have enabled SSH access, follow these steps to connect to it using SSH:

1. Connect to the appliance as “root” using an SSH client.

2. When prompted to enter a password, enter a password and press Enter.

Note: On an upgraded G9 C6600 appliance, SSH connectivity will be blocked after upgrade. To unblock SSH, disable SSH and then re-enable it.