Allied Telesis AT-S102 - Manual (Page 86)

Chapter 4: Starting a Management Session
86
Assigning an IP
Address
Configuration
and Changing the
Community
Strings
You have to assign the management card an IP address configuration if
the card will be performing any of these management functions:
ˆ Remote Telnet, web browser, or SNMP management
ˆ Sending event messages to a syslog server
ˆ Setting the date and time from a Network Time Protocol server
ˆ Sending SNMP traps to trap receivers.
ˆ Uploading or downloading files to a TFTP server.
ˆ Pinging a remote device.
The IP address configuration has to consist of a unique IP address and a
subnet mask. If the management card and the network devices (e.g.,
syslog server or TFTP server) are located on different networks, the
configuration must also include a default gateway address. The default
gateway address is the IP address of the router interface that represents
the first hop to reaching the remote networks where the devices reside.
Since a management card with an IP address configuration is vulnerable
to unauthorized access from an intruder with an SNMP program, you
should change the card’s SNMP community strings to protect the
management card and the media converter line cards. If an intruder were
to learn the IP address and the community strings of the management
card, he could use an SNMP application program to gain access to the
card, without having to know the password to the manager account.
The IP address configuration of the management card can be assigned
manually or, since the management card has a DHCP client, by a DHCP
server on your network.
To assign the management card an IP address configuration and to
change the SNMP community strings:
1. From the Main Menu, select Configuration.
2. From the Configuration Menu, select System Configuration.
3. From the System Configuration Menu, select System Parameters
Configuration.
4. From the System Parameters Configuration menu, select IP
Parameters to display the IP Parameters Menu.
5. To manually assign an IP address configuration to the management
card, enter values for the IP address, Subnet mask, and Gateway
address parameters. When entering the values, observe the following
guidelines:
ˆ The values have to be entered in this format: xxx.xxx.xxx.xxx.
ˆ The DHCP client has to be disabled.