ADTRAN 600R - Manual (Page 127)

Total Access 600 Series System Manual Section 4 User Interface Guide
61200624L1-1B © 2004 ADTRAN, Inc. 125
P UBLIC P ORT
This menu appears when the P UBLIC P ORT M ODE
is set to S PECIFIED
. Use this
option to specify the public port number to translate. Some well known
TCP/UDP port numbers are shown below:
Port Number Keyword Port Type
20 FTP (data) File Transfer Protocol Data
21 FTP (control) File Transfer Protocol Control
23 Telnet TCP/IP terminal emulation utility
666 DOOM DOOM
53 DNS Domain Name Server
69 TFTP Trivial File Transfer Protocol
80 HTTP Hypertext Transfer Protocol
110 POP3 Post Office Protocol ver. 3
P RIVATE A DDRESS M ODE
Choose A NY I NTERNAL
(default) or S PECIFIED
to choose which address to use for
the private address. The private IP address can be specified to filter certain
protocols and ports to specific servers in the private network. Likewise, internal
hosts can be steered to certain servers on the public network. A new request
from the public network that matches this entry’s public parameters is dropped
if the
P RIVATE A DDRESS M ODE
is set to A NY I NTERNAL
(with the exception of
protocols that the internal router is expected to respond to, such as ICMP or
SNMP).
P RIVATE A DDRESS
This menu appears when the P RIVATE A DDRESS M ODE
is set to S PECIFIED
, and
allows the user to enter a specific private IP address for this translation. Packets
destined for the public IP address (of this translation) are redirected to the
private IP address specified here.
P RIVATE P ORT M ODE
Select A NY P ORT
(default) or a S PECIFIED
port number for this translation. The
private destination port associated with this entry can be specified to provide
more control over certain types of traffic. Leave configured as
A NY P ORT
to
cover all port types.
P RIVATE P ORT M ODE
This menu appears when the P RIVATE P ORT M ODE
is set to S PECIFIED
, and allows
the user to enter the port number that replaces the public port number during the
translation of incoming packets. Outgoing packets from the private address
space that match this protocol are sent to the specified public address and port, if
any.