Using Telnet; Using Secure Shell Encryption For Telnet Sessions - Cisco WS-C6506 Software Manual

Using Telnet

Port
----- ------ ----------- ------------------- ------------ ------------
2/1
Using Telnet
You can access the switch command-line interface (CLI) using Telnet. In addition, you can use Telnet
from the switch to access the other devices in the network. Up to eight simultaneous Telnet sessions are
possible.
To Telnet to another device on the network from the switch, perform this task in privileged mode:
Task
Open a Telnet session with a remote host.
This example shows how to Telnet from the switch to a remote host:
Console> (enable) telnet labsparc
Trying 172.16.10.3...
Connected to labsparc.
Escape character is '^]'.
UNIX(r) System V Release 4.0 (labsparc)
login:

Using Secure Shell Encryption for Telnet Sessions

To use Secure Shell encryption commands, you must be running an encryption image. See
Note
"Working with System Software Images"
the encryption images.
Note The Secure Shell encryption feature includes cryptographic software written by Eric Young
(eay@cryptsoft.com).
Secure Shell encryption provides security for Telnet sessions and other remote connections to the switch.
Secure Shell encryption is supported for remote logins to the switch only. Telnet sessions that are
initiated from the switch cannot be encrypted. To use this feature, you must install the application on the
client accessing the switch, and you must configure Secure Shell encryption on the switch.
The current implementation of Secure Shell encryption supports SSH version 1 and version 2. SSH version 1
supports DES and 3DES encryption methods, and SSH version 2 supports the 3DES and AES encryption
methods. Secure shell encryption can be used with RADIUS and TACACS+ authentication. To configure
authentication with Secure Shell encryption, enter the telnet keyword in the set authentication
commands.
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
20-12
Speed Local pair Pair length
1000 Pair A 12
Pair B 12
Pair C 12
Pair D 12
Remote pair
+/- 3 meters Pair A
+/- 3 meters Pair B
+/- 3 meters Pair C
+/- 3 meters Pair D
Command
telnet host [port]
for the software image naming conventions that are used for
Chapter 20 Checking Status and Connectivity
Pair status
Terminated
Terminated
Terminated
Terminated
Chapter 27,
OL-8978-04