User manual

Chapter 4 - Layer 3 Command Set - IP Networking Nat Command (Network Address Translation)
Alvarion BreezeNET B130/B300 GigE 199 Operational User Manual
In order to delete a record for the private network from the configuration, use "-"
sign instead of a public address. For example:
nat local_acl $NAT -
nat alias_address 123.1.1.1
This command is obsolete. Use local_acl command.
nat maxlinks NUM
This command set the maximum number of supported connections. 1000 by
default.
The system automatically observes all the connections and dynamically destroys
all unnecessary connections according to their type and time of activity. However,
when using different network scanners there is a possibility that current number
of connections will increase enormously or until there is a free space in the RAM.
Using this command one can avoid this situation to happen. In the case when the
number of current connection exceeds the threshold set the system will put the
warning into the system log and restrict new connection establishment until the
situation becomes stable. When connections number will decrease the
corresponding message will be put into the system log and a normal work will be
resumed.
Generally, it is enough to run NAT.
nat enable
This command enables NAT-module to start NAT according to specified rules.
Example:
ifconfig null0 123.1.1.1/32 up
rip start# to start dynamic routing for public IP
acl add $NAT net 192.168.1.0/24
nat local_acl $NAT 123.1.1.1
nat enable
Done. One can start to check access from the LAN.
nat disable
Disables NAT.
nat same_ports yes|no
This command forces NAT-module to leave ports numbers in the modified packets
as they are. If it is impossible then arbitrary port numbers will be used.