Chapter 9 Network Address Translation (NAT)
Figure 67 NAT Advanced
The following table describes the labels in this screen.
Table 44 NAT Advanced
LABEL | DESCRIPTION |
Max NAT/Firewall | Type a number ranging from 1 to 2048 to limit the number of NAT/firewall sessions |
Session Per User | that a host can create. |
| When computers use peer to peer applications, such as file sharing |
| applications, they may use a large number of NAT sessions. If you do not |
| limit the number of NAT sessions a single client can establish, this can result in all |
| of the available NAT sessions being used. In this case, no additional NAT |
| sessions can be established, and users may not be able to access the Internet. |
| Each NAT session establishes a corresponding firewall session. Use this field to |
| limit the number of NAT/firewall sessions each client computer can establish |
| through the ZyXEL Device. |
| If your network has a small number of clients using peer to peer applications, you |
| can raise this number to ensure that their performance is not degraded by the |
| number of NAT sessions they can establish. If your network has a large number of |
| users using peer to peer applications, you can lower this number to ensure no |
| single client is using all of the available NAT sessions. |
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# | This is the rule index number |
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Name | Type a unique name (up to 15 characters) for identification purposes. All |
| characters are permitted - including spaces. |
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Incoming | Incoming is a port (or a range of ports) that a server on the WAN uses when it |
| sends out a particular service. The ZyXEL Device forwards the traffic with this port |
| (or range of ports) to the client computer on the LAN that requested the service. |
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Start Port | Type a port number or the starting port number in a range of port numbers. |
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116 |
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ZyXEL |
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