3Com Switch 7750 Configuration Guide Guide

7
USER CONTROL
Introduction A switch provides ways to control different types of login users, as listed in
Table 31.
Controlling Telnet
Users
Prerequisites: The controlling policy against Telnet users is determined, including the source and
destination IP addresses to be controlled and the controlling actions (permitting or
denying).
Controlling Telnet Users
by Source IP Addresses
Controlling Telnet users by source IP addresses is achieved by applying basic ACLs,
which are numbered from 2000 to 2999. For defining an ACL, refer to the ACL
part of the operation manual.
Table 31 Ways to control different types of login users
Login mode Control method Implementation Related section
Telnet
By source IP address Through basic ACL
“Controlling Telnet
Users by Source IP
Addresses”.
By source and
destination IP address
Through advanced
ACL
“Controlling Telnet
Users by Source and
Destination IP
Addresses”.
SNMP By source IP addresses Through basic ACL
“Controlling Network
Management Users by
Source IP Addresses”
Table 32 Control Telnet users by source IP addresses
Operation Command Description
Enter system view system-view -
Create a basic ACL or enter
basic ACL view
acl { number acl-number |
name acl-name basic } [
match-order { config | auto
} ]
As for the acl number
command, the config
keyword is specified by
default.
Define rules for the ACL
rule [ rule-id ] { permit | deny
} [ source { source-addr
wildcard | any | fragment | [
time-range time-name ]*
Required
Quit to system view quit -
Enter user interface view
user-interface [ type ]
first-number [ last-number ]
-