Accessing Remote Devices with the CLI

This section contains the following topics:

Using the telnet Command
Using the ssh Command

Using the telnet Command

Note: On SRX210, SRX220, SRX240, and SRX650 devices, the maximum number of concurrent telnet sessions is as follows:

SRX220

You can use the CLI telnet command to open a Telnet session to a remote device:

user@host> telnet host <8bit> <bypass-routing> <inet> <interface interface-name> <no-resolve> <port port> <routing-instance routing-instance-name> <source address>

To escape from the Telnet session to the Telnet command prompt, press Ctrl-]. To exit from the Telnet session and return to the CLI command prompt, enter quit.

Table 19 describes the telnet command options. For more information, see the Junos System Basics and Services Command Reference.

Table 19: CLI telnet Command Options

Option	Description
8bit	Use an 8-bit data path.
bypass-routing	Bypass the routing tables and open a Telnet session only to hosts on directly attached interfaces. If the host is not on a directly attached interface, an error message is returned.
host	Open a Telnet session to the specified hostname or IP address.
inet	Force the Telnet session to an IPv4 destination.
interface source-interface	Open a Telnet session to a host on the specified interface. If you do not include this option, all interfaces are used.
no-resolve	Suppress the display of symbolic names.
port port	Specify the port number or service name on the host.
routing-instance routing-instance-name	Use the specified routing instance for the Telnet session.
source address	Use the specified source address for the Telnet session.

Using the ssh Command

Note: On SRX210, SRX220, SRX240, and SRX650 devices, the maximum number of concurrent ssh sessions is as follows:

SRX220

You can use the CLI ssh command to use the secure shell (SSH) program to open a connection to a remote device:

user@host> ssh host <bypass-routing> <inet> <interface interface-name> <routing-instance routing-instance-name> <source address> <v1> <v2>

Table 20 describes the ssh command options. For more information, see the Junos System Basics and Services Command Reference.

Table 20: CLI ssh Command Options

Option	Description
bypass-routing	Bypass the routing tables and open an SSH connection only to hosts on directly attached interfaces. If the host is not on a directly attached interface, an error message is returned.
host	Open an SSH connection to the specified hostname or IP address.
inet	Force the SSH connection to an IPv4 destination.
interface source-interface	Open an SSH connection to a host on the specified interface. If you do not include this option, all interfaces are used.
routing-instance routing-instance-name	Use the specified routing instance for the SSH connection.
source address	Use the specified source address for the SSH connection.
v1	Force SSH to use version 1 for the connection.
v2	Force SSH to use version 2 for the connection.