3Com 5500-SI - Controlling Telnet Using Source IP; Controlling Telnet Using Source IP and Destination IP

Configuring Control Over Telnet 389
Controlling Telnet using
Source IP
This configuration can be implemented by means of basic ACL, which ranges from
2000 to 2999.
Controlling Telnet using
Source IP and
Destination IP
This configuration can be implemented by means of advanced ACL, which ranges
from 3000 to 3999. For the definition of ACL, refer to ACL part.
Table 409 Control Telnet using source IP
Configuration Procedure Command Description
Enter system view system-view —
Create or enter basic ACL
view
acl number acl-number [
match-order { config | auto }
]
By default, the matching order is
config.
Define the rule rule [ rule-id ] { permit | deny
} [ source { sour-addr
sour-wildcard | any } ] [
time-range time-name ] [
fragment ]
Required.
Exit ACL view quit —
Enter user interface view user-interface [ type ]
first-number [ last-number ]
—
Reference an ACL, and
control Telnet using source IP
acl acl-number { inbound |
outbound }
Required.
inbound: Performs ACL control
over users Telnetting to the local
switch.
outbound: Performs ACL control
over users Telnetting to other
switches from the local switch.
Table 410 Control Telnet using source IP and destination IP
Configuration Procedure Command Description
Enter system view system-view —
Create or enter advanced
ACL view
acl number acl-number [
match-order { config | auto } ]
By default, the matching order
is config.
Define the rule rule [ rule-id ] { permit | deny }
protocol [ source { source-addr
wildcard | any } ] [ destination {
dest-addr wildcard | any } ] [
source-port operator port1 [
port2 ] ] [ destination-port
operator port1 [ port2 ] ] [
icmp-type type code ] [
established ] [ [ { precedence
precedence tos tos | dscp dscp
}* | vpn-instance instance ] |
fragment | time-range name ]*
Required.
Users can configure the
filtering rules for the related
source IP and destination IP
based on actual requirements.
Exit ACL view quit —
Enter user interface view user-interface [ type ]
first-number [ last-number ]
—
Refer to ACL, and control
Telnet using source IP and
destination IP
acl acl-number { inbound |
outbound }
Required.
Inbound: Performs ACL
control over users Telnetting
from the local switch.
outbound: Performs ACL
control over users Telnetting
to other switches from the
local switch.