Compex Systems 802.11N - Manual (Page 51)

Firewall Setup
Firewall Setup: Default is disabled. Check on box to enable.
For configuration refer to Appendix section.
Comment: enter a brief name for the service.
Policy: select Accept or Deny for the apply rule
IP Type: select ICMP, TCP, and UDP packet type to check
Source IP/Mask: enter the source IP address and Netmask
Is the source IP of the packet (specified within the packet header), usually it is
the IP of the host system which sends the packets;
Src Port: enter the source port number in rule check
Is the source port of the TCP/UDP packet (specified within the packet header), usually it
is the port of the host system application which sends the packets.
Destination IP/Mask: enter the destination IP and Netmask
Is the Destination IP of the packet (specified within the packet header),
usually it is the IP of the system which the packet is addressed to;
Des Port: enter the destination port in rule check
Is the destination port of the TCP/UDP packet (specified within the packet
header), usually it is the port of the host system application which the packet is
addressed to
.
Click Apply to the rule or Cancel to clear the rule set.