Model: MTS200 (1U)
Doc. Ref. no. : m08/om/201
Issue no. : 03
User’s Manual
Page 148 of 195
Page 148 of 195
13 Ethernet Communications: Telnet, SNMP
13.1 Telnet
Telnet is a session layer protocol to provide bilateral communication using command line interface with
remote host. MTS200 support telnet protocol (PORT: 23) for its own configuration of device. User can
connect with MTS200 device using telnet command from windows or unix/linux based systems.
For windows based PC/Server, user need to go command prompt by typing “cmd” in run mode and then
give command:
telnet 192.168.100.121.
When telnet communication is established, MTS200 console
port will prompt.
Now, once user has accessed MTS200 console through Telnet, user can run console based configuration
utility program “start” as explained in section 9.2.
User can also use software “putty” software for windows based system. Select “telnet” in “connection type”
field and enter MTS200
IP address in “Host name” field and then click on “Open”. This will start telnet
communication with MTS200.
After, user finished MTS200 configuration over telnet, user should close the telnet session by giving
command “exit” on MTS200 console. This will close telnet session with MTS200. This is necessary to
prevent unauthorized access to device because if telnet session is not closed, user who is not authorized
can take access and change the device configurations without the knowledge of operator.
It is recommended to avoid using telnet communication with MTS200
because it is very unsecure protocol as it is transmitting username and
password as simple texts over net.
It is always recommended to use SSH instead of Telnet as SSH is very
high secured protocol.
13.2 SSH
SSH is a secure protocol to provide bilateral communication using command line interface with remote
host. MTS200 support SSH protocol (PORT: 22) for its own configuration of device. User can connect
with MTS200 device using ssh command from windows or unix/linux based systems.
MTS200 supports ssh v1 and sshv2 communication. SSHv1 security uses RSA key of size 768 bits /
1024 bits / 2048 bits while SSHv2 security uses DSA of 1024 bits (fixed) and RSA key of size 768 bits /
1024 bits / 2048 bits. The RSA key sized can be configured using console based configuration utility
program as explained in section 9.2 or webserver as explained in section 13.4. It is recommended to use
RSA key of size 2048 bits as it provides maximum level of security as compare to 768 and 1024 bits key
size.
For windows based PC/Server,
User need to use software “putty” software for windows based system.
Select “ssh” in “connection type” field and enter MTS200 IP address in “Host name” field and then click on
“Open”. This will start ssh Session with MTS200.
For Unix/Linux based system, open terminal and then follow below command:
Command
: ssh [email protected]
