Before You Begin - Juniper J2300 Getting Started Manual

J2300, J4300, and J6300 Services Router Getting Started Guide
Telnet access to the root user is prohibited. You must use more secure
methods, such as SSH, to log in as
If you are using a JUNOScript server to configure and monitor routers, you can
activate clear-text access on the router to allow unencrypted text to be sent
directly over a TCP connection without using any additional protocol (such as SSH,
SSL, or Telnet). Information sent in clear text is not encrypted and therefore
can be intercepted. For more information about the JUNOScript application
programming interface (API), see the JUNOScript API Guide.
If the router is operating in a Common Criteria environment, see the Secure
Configuration Guide for Common Criteria and JUNOS-FIPS.
SSH also allows you to connect to the router and access the CLI to
execute commands from a remote system. However, unlike Telnet, SSH
encrypts traffic so that it cannot be intercepted.
SSH can be configured so that connections are authenticated by a digital certificate.
SSH uses public-private key technology for both connection and authentication.
The SSH client software must be installed on the machine where the client
application runs. If the SSH private key is encrypted (for greater security), the SSH
client must be able to access the passphrase used to decrypt the key.
For information about obtaining SSH software, see
and

Before You Begin

Before you begin initial configuration, complete the following tasks:
116
Before You Begin
.
http://www.openssh.com
Install the Services Router in its permanent location, as described in "Installing
and Connecting a Services Router" on page 95.
Gather the following information:
Hostname for the router on the network
Domain that the router belongs to on the network
Password for the root user
Time zone where the router is located
IP address of an NTP server (if NTP is used to set the time on the router)
IP address of a DNS server
List of domains that can be appended to hostnames for DNS resolution
IP address of the default gateway
.
root
http://www.ssh.com