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Assistance in the Protection from Un-

authorized Access

UM Basic Configuration L3P

Release

7.1

12/2011

6.3

Telnet/internet/SSH access

The web server uses HTTP to load a Java applet for the web-based interface

onto your computer. This applet then communicates with the device by

SNMP (Simple Network Management Protocol). If you have enabled the

Web Server (HTTPS) function, the Java applet establishes an HTTPS

connection to the device. The device creates an HTTPS tunnel through the

SNMP. It uses DES encoding on 56 bits. You can upload HTTPS certificates

to the device.

 Certificate

An X.509/PEM Standard certificate (Public Key Infrastructure) is required

for the encryption. In the as-delivered state, a self-generated certificate is

already present on the device.

 You can create an X509/PEM certificate using the following CLI

command: # ip https certgen

 You can upload a new certificate using the following CLI command:

copy tftp://<server_ip>/<path_to_pem>

nvram:httpscert

 You can switch the HTTPS server off and on again using the following

CLI command sequence:

# no ip https server

# ip https server

Note: If you upload a new certificate, reboot the device or the HTTPS

server in order to activate the certificate.

 HTTPS connection

Note: The standard port for HTTPS connection is 443. If you change the

number of the HTTPS port, reboot the device or the HTTPS server in

order to make the change effective.

 You can change the HTTPS port number using the following CLI-

command (where <port_no> is the number of the HTTPS port):

#ip https port <port_no>

Note: If you want to use HTTPS, switch on both HTTPS and HTTP. This

is required in order to load the applet. In the as-delivered state, HTTPS is

switched off.

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