Netgear GS724TS-100NAS User Manual download pdf (Page 195)

Chapter 5: Managing Device Security | 195

GS716Tv2 and GS724Tv3 Software Administration Manual

• Protocol Type. Requires a packet’s protocol to match the protocol listed here. Select

a type from the drop down menu or enter the protocol number in the available field.

• Src IP Address. Requires a packet’s source IP address to match the address listed

here. Type an IP Address in the appropriate field 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. Wild card masks

determines which bits are used and which bits are ignored. A wild card mask of

255.255.255.255 indicates that no bit is important. A wildcard 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, you type

0.0.0.255 in the Source IP Mask field. This field is required when you configure a

source IP address.

• Src L4 Port. Requires a packet’s TCP/UDP source port to match the port listed here.

Click Complete one of the following fields:

• Source L4 Keyword: Select the desired L4 keyword from a list of source ports on

which the rule can be based.

• Source L4 Port Number: If the source L4 keyword is Other, enter a user-defined

Port ID by which packets are matched to the rule.

• Dst IP Address. Requires a packet’s destination port IP address to match the

address listed here. Enter an IP Address in the appropriate field using dotted-decimal

notation. The address you enter is compared to a packet's destination IP Address.

• Dst IP Mask. Specifies the destination IP address wildcard mask. Wild card masks

determines which bits are used and which bits are ignored. A wild card mask of

255.255.255.255 indicates that no bit is important. A wildcard 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, you type

0.0.0.255 in the Source IP Mask field. This field is required when you configure a

source IP address.

• Dst L4 Port. Requires a packet’s TCP/UDP destination port to match the port listed

here. Complete one of the following fields:

• Destination L4 Keyword: Select the desired L4 keyword from a list of destination

ports on which the rule can be based.

• Destination L4 Port Number: If the destination L4 keyword is Other, enter a

user-defined Port ID by which packets are matched to the rule.

• Service Type. Choose one of the Service Type match conditions for the extended IP

ACL rule. The possible values are IP DSCP, IP precedence, and IP TOS, which are

alternative ways of specifying a match criterion for the same Service Type field in the

IP header, however each uses a different user notation. After you select the service

type, specify the value associated with the type.

• IP DSCP: Specify the IP DiffServ Code Point (DSCP) value. The DSCP is defined

as the high-order six bits of the Service Type octet in the IP header. Select an IP

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Netgear GS724TS-100NAS User Manual Page 195

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Netgear GS724TS-100NAS User Manual Page 195

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