User guide

VT2542 Voice Gateway User Guide 30
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Configuration: Basic Advanced TCP/IP Wireless
Custom IP Filters
You can define up to 20 custom filters to block services or applications based on the source and destination IP
address, subnet mask, TCP port, and protocol.
Custom IP Filters fields
Field Description
Filter Name The IP filter rule name
Enable Selected by default and automatically applied when you click Save
Source IP The LAN source IP address assigned to outgoing traffic on which filtering is applied
Source Netmask Subnet mask of the source IP address
Destination IP Sets the destination IP address to which your source IP address is denied access
Destination Netmask Subnet mask of the destination IP address. Enter 0.0.0.0 for all
Port Start The starting port number that will be blocked for this application
Port End The ending port number that will be blocked for this application
Protocol The options are TCP, UDP, TCP and UDP, ICMP, or Any