Heritage Series ADSL Bridge/ Router | 99 |
Command Sets for Command Line Interface |
The nat inbound add command allows packets arriving on a specific port and IP protocol to be forwarded to a machine on the private network. <i/f> is an interface name as shown by the nat interface list command; <port> is the destination UDP or TCP port number to match in the incoming traffic; <proto> is the IP protocol, either “udp” or “tcp”; <new IP> is the new IP address on the private network which the packet’s destination IP address should be translated to. If a rule is added for an interface on which NAT is not enabled, the rule is added anyway but a warning is printed to alert the user to this fact. quiet is a special option which should not normally be issued at the console, and causes this warning to be suppressed. The quiet option is automatically added by NAT to when writing its configuration to flash; this is because when a system boots, the NAT process reads in these rules before IP has registered any interfaces
nat inbound list shows the current rules for inbound traffic, including all the arguments passed to the nat inbound add command.
nat inbound delete removes a rule, where <#> is the rule number as shown by the nat inbound list command.
nat inbound flush removes all the rules.
Example:
>nat inbound add ppp_device 80/TCP 192.168.219.38
>nat inbound list
#Interface Port/Proto New IP address
1 ppp_device 80/tcp 192.168.219.38
2 r1483 21/tcp 192.168.219.40 > nat inbound delete 2
4.nat info
Syntax:
nat info
Description:
This command displays the values of various parameters, which are defined in the module file, for example the session table size and the session timeouts. NAT’s current memory usage is also displayed.
Example:
>nat info
Interface table size 1 (116 bytes)
Session table size per interface: 128 (6656 bytes)
Total: 6656 bytes
