User Guide

Chapter 5. Command Line Interface Reference 123
SYSTEM ADDSNMPFILTER
This command is used to validate SNMP clients by defining a range of IP addresses that are allowed to access the
router via SNMP. This validation feature is
off
by default.
Note 1:
This command does
not
require a reboot and is effective immediately.
Note 2:
To list the range of allowed clients, use the command
system list
when you are logged in with read and
write permission (be sure to log in with password).
SYSTEM ADDSYSLOGFILTER
Access to the system logging port can be controlled with the following filter command:
SYSTEM ADDTELNETFILTER
This command is used to validate Telnet clients by defining a range of IP addresses that are allowed to access the
router via Telnet. This validation feature is
off
by default.
Note 1:
This command does
not
require a reboot and is effective immediately.
Note 2:
To list the range of allowed clients, use the command
system list
when you are logged in with read and
write permission (log in with password).
first port
First or only port as seen by the remote end
.
Port used by the selected server; can be a string
such as
ftp, telnet, smtp, snmp,
or
http
, or a numeric value between 0 and 65,535. A numeric
value of 0 will match any port.
last port
If specified, this is used with <
first port
> to denote a range of ports as seen by the remote end
for the server on the LAN.
first private port
If specified, this is a port remapping of the incoming request from the remote end.
Example:
system addServer 192.168.1.5 tcp smtp
system addSNMPFilter
<first ip addr>
[
<last ip addr>
] | LAN
first ip addr
First IP address of the client range.
last ip addr
Last IP address of the client range. May be omitted if the range contains only one IP address.
LAN Local Ethernet LAN.
Example:
system addSNMPFilter 192.168.1.5 192.168.1.12
system addSyslogFilter <
firstipaddr
>
[
<last ip addr>
] | LAN