Establishing an Outbound Telnet Connection

C H A P T E R 31

This chapter describes the Outbound Telnet feature and how to establish a connection.

This feature establishes an outbound telnet connection between a device and a remote host.

When a telnet connection is initiated, each side of the connection is assumed to originate and terminate at a “Network Virtual Terminal” (NVT).

Server and user hosts do not maintain information about the characteristics of each other’s terminals and terminal handling conventions.

Must use a valid IP address.

This chapter contains the following topics:

Section , Configuring a Telnet Connection via CLI

Section , Configuring a Telnet Connection via Web Interface

Configuring a Telnet Connection via CLI

The following are examples of the CLI commands used with the Outbound Telnet feature.

Example 1: `show network`

CODE EXAMPLE 31-1 show network Command
(DTI SWITCH) >telnet 192.168.77.151 Trying 192.168.77.151... (DTI SWITCH) User:admin Password: (DTI SWITCH) >enable Password: (DTI SWITCH) # show network IP Address............................... 192.168.77.151 Subnet Mask.............................. 255.255.255.0 Default Gateway.......................... 192.168.77.127 Burned In MAC Address.................... 00:10:18.82.04:E9 Locally Administered MAC Address......... 00:00:00:00:00:00 MAC Address Type......................... Burned In Network Configuration Protocol Current. .. DHCP Management VLAN ID....................... 1 Web Mode................................. Enable Java Mode ............................... Disable

CODE EXAMPLE 31-1 show network Command

(DTI SWITCH) 					>telnet 192.168.77.151
Trying 192.168.77.151...
(DTI SWITCH) 	
User:admin
Password:
(DTI SWITCH)	>enable
Password:
 
(DTI SWITCH)	# show network
 
IP Address...............................				192.168.77.151
Subnet Mask..............................				255.255.255.0
Default Gateway..........................				192.168.77.127
Burned In MAC Address....................				00:10:18.82.04:E9
Locally Administered MAC Address.........				00:00:00:00:00:00
MAC Address Type.........................				Burned In
Network Configuration Protocol Current.	..					DHCP
Management VLAN ID.......................				1
Web Mode.................................				Enable
Java Mode ...............................				Disable

Example 2: `show telnet`

CODE EXAMPLE 31-2 show telnet Command
(DTI SWITCH) # show telnet Outbound Telnet Login Timeout (minutes)........ 5 Maximum Number of Outbound Telnet Sessions..... 5 Allow New Outbound Telnet Sessions............. Yes

Example 3: `transport output telnet`

CODE EXAMPLE 31-3 transport output telnet Command
(DTI SWITCH) (Config)# lineconfig ? <cr> Press Enter to execute the command. (DTI SWITCH) (Config)# lineconfig (DTI SWITCH) (Line)# transport ? input Displays the protocols to use to connect to a specific line of the router. output Displays the protocols to use for outgoing connections from a line. (DTI SWITCH) (Line)# transport output ? telnet Allow or disallow new telnet sessions. (DTI SWITCH) (Line)# transport output telnet ? <cr> Press Enter to execute the command. (DTI SWITCH) (Line)# transport output telnet (DTI SWITCH) (Line)#

CODE EXAMPLE 31-3 transport output telnet Command

(DTI SWITCH) (Config)# lineconfig ?
 
<cr> Press Enter to execute the command.
 
(DTI SWITCH) (Config)# lineconfig
 
(DTI SWITCH) (Line)# transport ?
 
input Displays the protocols to use to connect to a
 specific line of the router.
output Displays the protocols to use for outgoing
 connections from a line.
 
(DTI SWITCH) (Line)# transport output ?
 
telnet Allow or disallow new telnet sessions.
 
(DTI SWITCH) (Line)# transport output telnet ?
 
<cr> Press Enter to execute the command.
 
(DTI SWITCH) (Line)# transport output telnet
 
(DTI SWITCH) (Line)#

Example 4: `session-limit` and `session-timeou`t

CODE EXAMPLE 31-4 session-limit and session-timeout Commands
(DTI SWITCH) (Line)# session-limit ? <0-5> Configure the maximum number of outbound telnet sessions allowed. (DTI SWITCH) (Line)# session-limit 5 (DTI SWITCH) (Line)# session-timeout ? <1-160> Enter time in minutes. (DTI SWITCH) (Line)# session-timeout 15

CODE EXAMPLE 31-4 session-limit and session-timeout Commands

(DTI SWITCH) (Line)# session-limit ?
 
<0-5> Configure the maximum number of outbound telnet
 sessions allowed.
 
(DTI SWITCH) (Line)# session-limit 5
 
(DTI SWITCH) (Line)# session-timeout ?
 
<1-160> Enter time in minutes.
 
(DTI SWITCH) (Line)# session-timeout 15

Configuring a Telnet Connection via Web Interface

You can set up the Outbound Telnet session through the Web interface.

Enable or disable administration mode

Set how many sessions you want

Set the session time outs

FIGURE 31-1 Telnet Session Configuration

Configuring a Telnet Connection via CLI

Example 1: show network

Example 2: show telnet

Example 3: transport output telnet

Example 4: session-limit and session-timeout

Configuring a Telnet Connection via Web Interface

Example 1: `show network`

Example 2: `show telnet`

Example 3: `transport output telnet`

Example 4: `session-limit` and `session-timeou`t