Manual PENTAGRAM Cerberus P 6331-6 (page 37 of 63) (English)

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Cerberus ADSL2 Wi-Fi Plus (P6331-6)

• Packet Filter

Packet filtering enables you to configure your router to block specified internal/external

users (IP address) from Internet access, or you can disable specific service requests

(Port number) to /from Internet. This configuration program allows you to set up to 6

different filter rules for different users based on their IP addresses or their network Port

number. The relationship among all filters is “or” operation, which means that the router

checks these different filter rules one by one, starting from the first rule. As long as one of

the rules is satisfied, the specified action is taken.

Add – Click this button to add a new packet filter rule and the next figure appears.

Edit – Check the Rule No. you wish to edit, and then click “Edit”.

Delete – Check the Rule No. you wish to delete, and then click “Delete”.

Application – User can choose they want.

Packet Flow – Determine whether the rule is for outgoing packets or for incoming

packets.

Active – Choose Yes to enable the rule, or choose No to disable the rule.

Packet Type – Specify the packet type (TCP, UDP, ICMP or any) that the rule applies to.

Select TCP if you wish to search for the connection-based application service on the

remote server using the port number. Or select UDP if you want to search for the

connectionless application service on the remote server using the port number.

Log – Choose Yes if you wish to generate logs when the filer rule is applied to a packet.

Action When Matched – If a packet matches this filter rule, Forward or Drop this

packet.

Source IP Address – Enter the incoming or outgoing packet’s source IP address(es).

Source Port – Check the TCP or UDP packet’s source port number(s).

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PENTAGRAM Cerberus P 6331-6 Manual

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