Quick Reference Guide

862 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Restricting remote access to management functions
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PowerConnect(config)# telnet login-retries 5
Syntax: [no] telnet login-retries <number>
You can specify from 0 – 5 attempts. The default is 4 attempts.
Restricting remote access to the device to specific
VLAN IDs
You can restrict management access to a device to ports within a specific port-based VLAN.
VLAN-based access control applies to the following access methods:
• Telnet access
• SNMP access
• TFTP access
By default, access is allowed for all the methods listed above on all ports. Once you configure
security for a given access method based on VLAN ID, access to the device using that method is
restricted to only the ports within the specified VLAN.
VLAN-based access control works in conjunction with other access control methods. For example,
suppose you configure an ACL to permit Telnet access only to specific client IP addresses, and you
also configure VLAN-based access control for Telnet access. In this case, the only Telnet clients that
can access the device are clients that have one of the IP addresses permitted by the ACL and are
connected to a port that is in a permitted VLAN. Clients who have a permitted IP address but are
connected to a port in a VLAN that is not permitted still cannot access the device through Telnet.
Restricting Telnet access to a specific VLAN
To allow Telnet access only to clients in a specific VLAN, enter a command such as the following.
PowerConnect(config)# telnet server enable vlan 10
The command in this example configures the device to allow Telnet management access only to
clients connected to ports within port-based VLAN 10. Clients connected to ports that are not in
VLAN 10 are denied management access.
Syntax: [no] telnet server enable vlan <vlan-id>
Restricting SNMP access to a specific VLAN
To allow SNMP access only to clients in a specific VLAN, enter a command such as the following.
PowerConnect(config)# snmp-server enable vlan 40
The command in this example configures the device to allow SNMP access only to clients
connected to ports within port-based VLAN 40. Clients connected to ports that are not in VLAN 40
are denied access.
Syntax: [no] snmp-server enable vlan <vlan-id>
Restricting TFTP access to a specific VLAN
To allow TFTP access only to clients in a specific VLAN, enter a command such as the following.
PowerConnect(config)# tftp client enable vlan 40