APC Network Management Card AP9617 User's Guide download pdf (Page 125)

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USER’S GUIDE

network management card

119

Security

Security Features

Planning and implementing security features

As a network device that passes information across the network, the

Network Management Card is subject to the same exposure as other

devices on the network.

Use the information in this section to plan and implement the security

features appropriate for your environment.

Port assignments

If a Telnet, FTP, or Web server uses a non-standard port, a user must

specify the port when using the client interface, such as a Web browser.

The non-standard port address becomes an extra “password,” hiding the

server to provide an additional level of security. The TCP ports for which the

Telnet, FTP, and Web servers listen are initially set at the standard “well

known ports” for the protocols. To hide the interfaces, use any port numbers

from 5000 to 65535.

User names, passwords, community names

All user names, passwords, and community names for SNMP are

transferred over the network as plain text. A user who is capable of

monitoring the network traffic can determine the user names and

passwords required to log in to the accounts of the Control Console or Web

interface of the Network Management Card. This security limitation of the

protocols affects any device using Telnet, a Web server, or an SNMP

version 1 agent.

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APC Network Management Card AP9617 User's Guide Page 125