Netgear GS516TP Software Administration Manual - Page 142

IP Extended Rules, Security > ACL > Advanced > IP Rules

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GS516TP Gigabit Smart Switches  To configure IP rules, select the following: 1. Select Security > ACL > Advanced > IP Rules. 2. From the ACL ID field, select the IP ACL for which to create or update a rule. The valid range is 1-99. 3. Configure the following fields: • Rule ID. Specify a number from 1 to 10 to identify the IP ACL rule. You can create up to ten rules for each ACL. • Action. Select an ACL forwarding action: • Permit. Forwards packets which meet the ACL criteria. • Deny. Drops packets which meet the ACL criteria. • Logging. When set to Enable, logging is enabled for this ACL rule (subject to resource availability in the device). If the access list trap flag is also enabled, this causes periodic traps to be generated indicating the number of times this rule was hit during the current report interval. A fixed 5-minute report interval is used for the entire system. A trap is not issued if the ACL rule hit count is 0 for the current interval. This field is available for a deny action. • Match Every. Requires a packet to match the criteria of this ACL. Select Enable or Disable. Match Every is exclusive to the other filtering rules, so if Match Every is enabled, the other rules on the screen are not available. • Src IP Address. Requires a packet's source IP address to match the address listed here. Enter an IP address using dotted-decimal notation. The address you enter is compared to a packet's source IP address. • Src IP Mask. Specifies the source IP address wildcard mask. Wildcard masks determine which bits are used and which bits are ignored. A wildcard mask of 255.255.255.255 indicates that no bit is important. A wildcard mask of 0.0.0.0 indicates that all of the bits are important. Wildcard masking for ACLs operates differently from a subnet mask. A wildcard mask is in essence the inverse of a subnet mask. For example, to apply the rule to all hosts in the 192.168.1.0/24 subnet, enter 0.0.0.255 in the Source IP Mask field. This field is required when you configure a source IP address. 4. Click ADD. Configuration changes take effect immediately. To update an IP ACL rule, select the check box associated with the rule, update the desired fields, and click APPLY. You cannot modify the Rule ID of an existing IP rule. IP Extended Rules Use the IP Extended Rules screen to define rules for IP-based extended ACLs. The access list definition includes rules that specify whether traffic matching the criteria is forwarded normally or discarded. 142

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142
GS516TP Gigabit Smart Switches
To configure IP rules, select the following:
1.
Select
Security > ACL > Advanced > IP Rules
.
2.
From the ACL ID field, select the IP ACL for which to create or update a rule.
The valid range is 1–99.
3.
Configure the following fields:
•
Rule ID
. Specify a number from 1 to 10 to identify the IP ACL rule. You can create up
to ten rules for each ACL.
•
Action
. Select an ACL forwarding action:
•
Permit. Forwards packets which meet the ACL criteria.
•
Deny. Drops packets which meet the ACL criteria.
•
Logging
. When set to Enable, logging is enabled for this ACL rule (subject to
resource availability in the device). If the access list trap flag is also enabled, this
causes periodic traps to be generated indicating the number of times this rule was hit
during the current report interval. A fixed 5-minute report interval is used for the entire
system. A trap is not issued if the ACL rule hit count is 0 for the current interval. This
field is available for a deny action.
•
Match Every
. Requires a packet to match the criteria of this ACL. Select
Enable
or
Disable
. Match Every is exclusive to the other filtering rules, so if Match Every is
enabled, the other rules on the screen are not available.
•
Src IP Address
. Requires a packet’s source IP address to match the address listed
here. Enter an IP address using dotted-decimal notation. The address you enter is
compared to a packet's source IP address.
•
Src IP Mask
. Specifies the source IP address wildcard mask. Wildcard masks
determine which bits are used and which bits are ignored. A wildcard mask of
255.255.255.255 indicates that no bit is important. A wildcard mask of 0.0.0.0
indicates that all of the bits are important. Wildcard masking for ACLs operates
differently from a subnet mask. A wildcard mask is in essence the inverse of a subnet
mask. For example, to apply the rule to all hosts in the 192.168.1.0/24 subnet, enter
0.0.0.255 in the Source IP Mask field. This field is required when you configure a
source IP address.
4.
Click
ADD
.
Configuration changes take effect immediately.
To update an IP ACL rule, select the check box associated with the rule, update the desired
fields, and click
APPLY
. You cannot modify the Rule ID of an existing IP rule.
IP Extended Rules
Use the IP Extended Rules
screen to define rules for IP-based extended ACLs. The access
list definition includes rules that specify whether traffic matching the criteria is forwarded
normally or discarded.