3com 5500-ei pwr Installation Instruction

 

8-2 

The controlling policy against Telnet users is determined, including the source IP addresses, destination 

IP addresses and source MAC addresses to be controlled and the controlling actions (permitting or 

denying). 

Controlling Telnet users by source IP addresses is achieved by applying basic ACLs, which are 

numbered from 2000 to 2999. 

Follow these steps to control Telnet users by source IP addresses: 

Enter system view 

system-view 

— 

Create a basic ACL or 
enter basic ACL view 

acl number acl-number 
[ match-order { auto | 
config } ] 

As for the acl number command, the 
config keyword is specified by 
default. 

Define rules for the ACL 

rule [ rule-id ] { deny | 
permit } [ rule-string ] 

Required 

Quit to system view 

— 

Enter user interface view 

user-interface [ type ] 
first-number [ last-number ] 

— 

Apply the ACL to control 
Telnet users by source IP 
addresses 

acl acl-number { inbound | 
outbound } 

Required 

The inbound keyword specifies to 
filter the users trying to Telnet to the 
current switch. 

The outbound keyword specifies to 
filter users trying to Telnet to other 
switches from the current switch. 

 

Controlling Telnet users by source and destination IP addresses is achieved by applying advanced 

ACLs, which are numbered from 3000 to 3999.  

Follow these steps to control Telnet users by source and destination IP addresses: 

Enter system view 

system-view 

— 

Create an advanced ACL 
or enter advanced ACL 
view 

acl number acl-number 
[ match-order { auto | config } ]

As for the acl number command, 
the config keyword is specified by 
default. 

Define rules for the ACL 

rule [ rule-id ] { deny | permit } 
protocol [ rule-string ] 

Required 

You can define rules as needed to 
filter by specific source and 
destination IP addresses. 

Quit to system view 

—