Controlling Telnet Users By Source Mac Addresses - 3Com 4510G Configuration Manual

Controlling Telnet Users by Source MAC Addresses

This configuration needs to be implemented by Layer 2 ACL; a Layer 2 ACL ranges from 4000 to 4999.
For the definition of ACL, refer to ACL Configuration in the Security Volume.
Follow these steps to control Telnet users by source MAC addresses:
To do...
Enter system view
Create a basic ACL or enter
basic ACL view
Define rules for the ACL
Quit to system view
Enter user interface view
Apply the ACL to control Telnet
users by source MAC
addresses
Layer 2 ACL is invalid for this function if the source IP address of the Telnet client and the interface IP
address of the Telnet server are not in the same subnet.
Configuration Example
Network requirements
Only the Telnet users sourced from the IP address of 10.110.100.52 and 10.110.100.46 are permitted
to log in to the switch.
Figure 8-1 Network diagram for controlling Telnet users using ACLs
10.110.100.46
Host A
IP network
Host B
10.110.100.52
Use the command...
system-view
acl number acl-number
[ match-order { config |
auto } ]
rule [ rule-id ] { permit | deny }
rule-string
quit
user-interface [ type ]
first-number [ last-number ]
acl acl-number inbound
Switch
8-3
Remarks
—
As for the acl number
command, the config keyword
is specified by default.
Required
You can define rules as
needed to filter by specific
source MAC addresses.
—
—
Required
The inbound keyword
specifies to filter the users
trying to Telnet to the current
switch.