IP Passthrough page configuration parameters
Digi TransPort User Guide
477
IP Passthrough page configuration parameters
In this configuration, the local PC shares the public IP addressing information with the WAN side
of the router.
Enable IP Pass-through
Enables IP passthrough mode.
Ethernet interface
The Ethernet interface to which the local PC is connected.
PPP interface
The PPP interface that will share its WAN address with the local PC.
Mode
Selects the mode of operation for the passthrough functionality. The available options are
Normal/28 bit mask
and
Fixed IP Address/32 bit mask
. The default is
Normal/28 bit mask
.
When
Fixed IP/32 bit mask
mode of operation is selected, the DHCP server provides a 32-bit
subnet mask to the client and sets the address/subnet mask for the Ethernet interface to
192.168.1.1/32
.
Pinhole Configuration
The following parameters are checkboxes allowing specific protocols to be excluded from the
IP passthrough feature. An excluded protocol terminates at the router instead of being
forwarded to the local PC.
HTTP
When checked, this checkbox excludes HTTP from passthrough.
HTTPS
When checked, this checkbox excludes HTTPS from passthrough.
Telnet
When checked, this checkbox excludes Telnet from passthrough.
Telnet over SSL
When checked, this checkbox excludes SSL from passthrough.
SSH/SFTP
When checked, this checkbox excludes SSH/SFTP from passthrough.
SNMP
When checked, this checkbox excludes SNMP from passthrough.
GRE
When checked, this checkbox excludes GRE from passthrough.
Ping
When checked, this checkbox excludes the ICMP echo request from passthrough.
Other Ports
The list of TCP and UDP port numbers in this text box are added to the list of port numbers
that are not forwarded to the local PC. Separate port numbers by commas.
