User guide

Building Your Canopy Network March 2005
Through Software Release 6.1
Issue 1 Page 231 of 425
Canopy System User Guide
UDP Session Garbage Timeout
You may adjust this value in the range of 1 to 1440 minutes, based on network
performance. The default value of this parameter is 4 minutes.
DHCP Client Enable/Disable
Select either
◦ Enable to allow the network DHCP server to assign the NAT Public Network
Interface Configuration IP address, subnet mask, and gateway IP address for this
SM.
◦ Disable to
− disable DHCP server assignment of this address.
− enable the operator to assign this address.
DHCP Server Enable/Disable
Select either
◦ Enable to
− allow this SM to assign IP addresses, subnet masks, and gateway IP
addresses to attached devices.
− assign a start address for the SM.
− designate how many IP addresses may be leased on the IP Configuration
page of this SM.
◦ Disable to disallow the SM to assign addresses to attached devices.
DHCP Server Lease Timeout
You may adjust this parameter in the range of 1 to 30 days, based on network
performance. The default value of this parameter is 30 days.
DNS IP Address
Select either
◦ Obtain Automatically to allow the system to set the IP address of the DNS
server.
◦ Set Manually to enable yourself to set both a preferred and an alternate DNS IP
address.
Preferred DNS IP Address
If the DNS IP Address parameter is set to Set Manually, set this parameter as the
preferred address of the DNS server.
Alternate DNS IP Address
If the DNS IP Address parameter is set to Set Manually, set this parameter as the
alternate address of the DNS server.
User Defined Port Filtering Configuration
This parameter is shown in Figure 85 on Page 227. In Release 4.2 and later releases,
you can specify ports for which to block subscriber access, regardless of whether NAT is
enabled. See Filtering Protocols and Port on Page 303.