Portmap - Paradyne 6212 User Manual

[<public_addr>]
Maps one or more single local IP addresses to a public IP address. One to one mapping is used
for both inbound and outbound connections and many to one mapping are used only for
outbound connections. For outbound connections, the packets matches a static link then it creates
dynamic link with that static link information on outgoing path. For incoming path packets are
match with the dynamic link and the destination (public) address is translated with the local
address.
COMMAND DESCRIPTION
-local [<local_addr> | <local_addr_range> | <local_subnet>]
The option specifies the local address (es) that will be mapped. There are three ways of
specifying the local address. Using local_addr the local IP address can be expressed on dot-
notation. Using local_addr_range a range of IP addresses can be expressed in dot notation
separated by a dash (-). An example of an address range is:
192.168.1.10-192.168.1.30. Using local_subnet the local IP addresses can be specified using dot
notation. In this form the host part of the IP address is set to zero. For example: 192.168.1.0.
-public [<public_addr>]
This option specifies the public IP address that the local addresses are mapped to. Dot notation is
used.
EXAMPLE
addressmap -local 192.168.2.1 -public 202.54.30.2
Maps a local address to a public address.
addressmap -local 192.168.2.10-192.168.2.100 -public 202.54.30.3
Maps a range of local addresses to a single public address.
addressmap -local 192.168.2.0 -public 202.54.30.4
This command maps all IP addresses on the 192.168.2.0 subnet to a single public address
202.54.30.4.
5.6.5

portmap

portmap add/delete –o tcp | udp <local_addr>:[<port>/<port range>]
<public_addr>:[<port>/<port range>]
Packets that arrive with the specified public_addr:[port/ port range] are mapped to the specified
local_addr:[port/port range]. Here the range of local ports mapped with the range of public ports.
This facility allows the system to permit certain kinds of traffic from the public Internet, pass
through the WAN interface and be directed to the specified machine on the local network.
COMMAND DESCRIPTION
add/delete
1800-A2-GB20-00
Command Line Interface User's Guide
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