HP NRM42 - Manual (Page 45)

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4.4.2 IP Filter
You may use telnet or Web to remotely manage the ADSL Router. User just needs to enable
Telnet or Web and give it an IP address that wants to access the ADSL Router. The default
IP 0.0.0.0 allows any client to use this service to remotely manage the ADSL Router.
IP Filter Set Editing
IP filter Set Index: This is item number
Interface: Select which channel (PVC) to configure.
Direction: Select the access to the Internet (“Outgoing”) or from the Internet
(“Incoming”).or Both.
IP Filter Rule Editing
IP Filter Rule Index: This is item number
Active: Select Yes from the drop down list box to enable IP filter rule.