User`s guide

237
Entity
Instance
Parameter
Values
Equivalent Web Parameter
characters
frelay n smtp_subject
Up to 40
characters
Subject
Advanced
Configuration – Network > FTP Relay> Advanced
Tx Buffer Size n bytes
The value in this text box specifies the size of the Tx socket buffer.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
ftpcli n txbuf 0 - 2147483647 Tx Buffer Size
IP Passthrough
Configuration – Network > IP Passthrough
IP passthrough is a useful feature if a host computer or server on the local area network
needs to have access to it from the Internet with a public IP address. With IP passthrough
configured, all IP traffic, not just TCP/UDP is forwarded back to the host computer. This
feature can be useful for applications that do not function reliably through network address
translation.
In this configuration the local PC will share the public IP addressing information with the
WAN side of the router.
Enable IP Pass-through
When checked, this checkbox enables IP passthrough mode.
Ethernet interface
The value in this text box specifies the Ethernet interface that the local PC is connected to.
PPP interface
The value in this text box specifies the PPP interface that will share its WAN address with
the local PC.
Mode
This drop-down list selects the the mode of operation for the passthrough functionality. The
available options are Normal/24 bit mask and Fixed IP Address/32 bit mask. The
default is Normal/24 bit mask. When Fixed IP/32 bit mask mode of operation is
selected, the DHCP server will provide 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 that allow specific protocols to be excluded from
the IP passthrough feature. An excluded protocol will terminate 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.