# ssh
Device Management > Configuration > Security > ssh

Select to use secure shell (ssh) to encrypt all the traffic from UNIX workstations.

Note

- Settings configured here relate to the following interfaces:
  Ethernet and wireless LAN.
- Settings on this page can be changed by the following administrator:
  - Network Administrator

### ssh

Specify whether ssh is active or inactive.
If Active is selected, traffic is encrypted all the way from workstations to the device.

## ssh Settings

### Compression Transfer

Specify whether to compress data before sending it.

### Port Number

Enter the port number used for SSH connections to the device, using a value between 1024 and 65535. The default is 22.

### Timeout

Specify whether to terminate ssh connection to the device if no operation is performed from a workstation within a specified time period after the user logs in to the device via SSH.
To not terminate ssh connection, enter "0". To terminate ssh connection, enter the timeout period using a value between 1 and 65535 (seconds). The default is 300.

### Login Timeout

Specify whether to terminate ssh connection to the device when no login is performed within a specified time period after the user logs in to the device via SSH.
To not terminate ssh connection, enter "0". To terminate ssh connection, enter the timeout period using a value between 1 and 65535 (seconds). The default is 300.

### Encryption Algorithm

Select the encryption algorithm type for ssh.

Note

- The ssh communication will fail if you do not select at least one algorithm.

### Public Key

Displays the status of the public key used to encrypt data.
To create or change the public key, click Create. The Create Public Key page appears.

For details about the Create Public Key page

To delete the current public key, click Delete.

Note

- If the status of the public key is Off, the Delete button is not displayed.
- To communicate with ssh, you need the Public key.

### Key Length

Displays the key length of the public key.

### fingerprint

Displays the fingerprint of the public key.

## Buttons

### Refresh

Click to update the currently displayed information.

Note

- Before making the settings, click Refresh to obtain the machine's current status.

### OK

Click to apply the settings.

### Cancel

Click to cancel the settings.

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