LevelOne GTL-2881, User Manual

Page: 338 / 706

Chapter 12
| Security Measures
Filtering IP Addresses for Management Access
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Figure 216: Displaying the ARP Inspection Log
Filtering IP Addresses for Management Access
Use the Security > IP Filter page to create a list of up to 15 IP addresses or IP address
groups that are allowed management access to the switch through the web
interface, SNMP, or Telnet.
Command Usage
◆
The management interfaces are open to all IP addresses by default. Once you
add an entry to a filter list, access to that interface is restricted to the specified
addresses.
◆
If anyone tries to access a management interface on the switch from an invalid
address, the switch will reject the connection, enter an event message in the
system log, and send a trap message to the trap manager.
◆
IP address can be configured for SNMP, web and Telnet access respectively.
Each of these groups can include up to five different sets of addresses, either
individual addresses or address ranges.
◆
When entering addresses for the same group (i.e., SNMP, web or Telnet), the
switch will not accept overlapping address ranges. When entering addresses
for different groups, the switch will accept overlapping address ranges.
◆
You cannot delete an individual address from a specified range. You must
delete the entire range, and reenter the addresses.
◆
You can delete an address range just by specifying the start address, or by
specifying both the start address and end address.
Parameters
These parameters are displayed:
◆
Mode
■
Web – Configures IP address(es) for the web group.
■
SNMP – Configures IP address(es) for the SNMP group.