15: Security In Detail; Secure Shell: Ssh; Ssh Server Configuration - Lantronix EDS32PR User Manual

1 5 : S e c u r i
1 5 : S e c u r i
The EDS supports Secure Shell (SSH) and Secure Sockets Layer (SSL).

Secure Shell: SSH

SSH is a network protocol for securely accessing a remote device. This protocol
provides a secure, encrypted communication channel between two hosts over a
network.
Two roles require configuration: when the EDS acts as the SSH server and when it
acts as an SSH client. The SSH server is used by the CLI (Command Mode) and for
tunneling in Accept Mode. The SSH client is for tunneling in Connect Mode.

SSH Server Configuration

You can configure the EDS as an SSH server. There are two requirements:
SSH Host Keys or key pairs: private and public keys. These keys are used for
the Diffie-Hellman key exchange, the underlying encryption protocol. The EDS
represents its keys in the Open SSH format.
Authorized Users: users permitted to connect to the EDS SSH server.
You use the SSH Server Configuration page to satisfy both of these requirements—
creating or importing host keys, and defining Authorized Users.
The SSH Host Keys can be created by one or more methods:
You can use the EDS to generate the keys for you.
—Or—
You can use PuTTY to generate keys.
—Or—
You can use other tools to generate RFC4716-format keys.
The steps for each of these methods are described below.
Use the EDS to Generate the Keys:
1. Click SSH
Host Keys page appears.
2. Under Create New Keys, select the key type, RSA or DSA.
3. Select the Bit Size, 512, 768, or 1024.
EDS User Guide
t y i n D e t a i l
t y i n D e t a i l
SSH Server: Host Keys at the top of the page. The SSH Server:
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