Black Box LES1203A-M-R2 Bruksanvisning

Black Box Server LES1203A-M-R2

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Works with LES1200, LES1300, LES1400,

and LES1500 Series console servers.

Bridging and Connecting with SSH for LES Series Console Servers

LES1200, LES1300, LES1400, LES1500 Series

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Information

About this Document

This document describes two procedures related to SSH and your Console Servers:

• Serial bridging with SSH tunnels

• SSH connecting using an SSH client

Serial Bridging with SSH Tunnels

You can configure a pair of LES1200/LES1300/LES1400/LES1500 console servers to support serial bridging—for

interconnecting serial devices over a network. The serial data is encapsulated into network packets for transport over

the IP network between the two console servers. For secure transport, this can be directed through a secure SSH

tunnel:

877-877-2269 | blackbox.com

Page 2

Bridging and Connecting with SSH for LES Series Console Servers

Select SSH Tunnel when configuring the Serial Bridging Setting

Next, you will need to set up SSH keys for each end of the tunnel and upload these keys to the Server and Client gateways.

Client Keys

The first step in setting up ssh tunnels is to generate keys. Ideally, you will use a separate, secure machine to generate and store

all keys to be used on the LES1200/LES1300/LES1400/LES1500 console servers. If this is not ideal to your situation, keys may be

generated on the console servers themselves.

You can generate only one set of keys, and reuse them for every SSH session. While this is not recommended, each organization

will need to balance the security of separate keys against the additional administration they bring.

Generated keys may be one of two types—RSA or DSA (and it is beyond the scope of this document to recommend one over

the other). RSA keys will go into the files id_rsa and id_rsa.pub. DSA keys will be stored in the files id_dsa and id_dsa.pub.

For simplicity going forward, the term private key will be used to refer to either id_rsa or id_dsa and public key to refer to either

id_rsa.pub or id_dsa.pub.

To generate the keys using OpenBSD's OpenSSH suite, we use the ssh-keygen program:

$ ssh-keygen -t [rsa|dsa]

Generating public/private [rsa|dsa] key pair.

Enter file in which to save the key (/home/user/.ssh/id_[rsa|dsa]):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/user/.ssh/id_[rsa|dsa].

Your public key has been saved in /home/user/.ssh/id_[rsa|dsa].pub.

The key fingerprint is:

28:aa:29:38:ba:40:f4:11:5e:3f:d4:fa:e5:36:14:d6 user@server

Produkspesifikasjoner

Merke:	Black Box
Kategori:	Server
Modell:	LES1203A-M-R2
Strømforbruk (maks.):	12 W
Sertifisering:	CE, RoHS
Internminne:	16 MB
Konsollport:	RS-232
Dimensjoner (B x D x H):	89 x 102 x 28 mm
AC-inngangsspenning:	110-240 V
AC-inngangsfrekvens:	50-60 Hz
Temperatursensor:	Ja
Produktfarge:	Sort
Antall ethernets-/bredbåndstilkoblinger (RJ-45):	1
Driftstemperatur (T-T):	0 - 50 °C
Kommunikasjonsserieporter:	3
Relativ luftfuktighet under drift (H-H):	5 - 90
Webbasert administrasjon:	Ja