Technical data

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• Port overlap: One or more of the ports that would be visible to the remote end overlap.
Example:
remote addserver 192.168.1.10 tcp 9000 9000 telnet router1
Let us assume this command is accepted.
remote addserver 192.168.1.11 tcp 9000 9000 telnet router1
Let us assume this command gets an error.
For the remote end sending a server request to port 9000, it is impossible to know to which server,
192.168.1.10 -or- 192.168.1.11, to send the request, if both entries exist.
• Not enough memory was available to create an entry. This condition should not happen. The amount of
memory needed for a server entry is less than 30 bytes; understandably, if this problem occurs, a lot of
problems/failures will arise.
System Commands
The following two commands are used to globally enable/disable a local IP address (on your LAN) as the
server for that particular protocol.
system addServer
<
ipaddr
> discard|me <
protocolid
> tcp|udp <
first port
> ftp|telnet|smtp|snmp|http
[<
last port
>[<first
private port
>]]
system delServer
<
ipaddr
> discard|me <
protocolid
> tcp|udp <
first port
> ftp|telnet|smtp|snmp|http [<
last
port
>[<firs
t private port
>]]
first port:
it is the first or only port as seen by the remote end.
last port:
if specified, it is used with <
first port
> to specify a range of ports as seen by the remote end for
the server on your LAN.
first private port:
if specified, it is a port remapping of the incoming request from the remote end.
first port
maps to
first private port.
first port
+ 1 maps to
first private port
+ 1
last port
maps to
first private port
+
last port
-
first port
first port
through
last port
are the ports as seen by the remote end.
first private port
through
first private port
+
last port
-
first port
are the equivalent ports the server on
your local lan will receive the request.
Remember to type
save
to make the changes persistent across boots.
Examples:
system addserver 192.168.1.5 tcp smtp
system addserver 192.168.1.6 tcp 0
system addserver 192.168.1.6 udp 0
The router sends a server request for SMTP to 192.168.1.5 when such a request comes from any remote
router running NAT. The router sends any other server request (tcp or udp) to 192.168.1.6.