ZyXEL NBG420N Manuel d'utilisateur télécharger pdf (Page 144)

Chapter 11 Network Address Translation (NAT)

NBG420N User’s Guide

144

Figure 94 Network > NAT > Advanced

The following table describes the labels in this screen.

Table 55 Network > NAT > Advanced

LABEL DESCRIPTION

Max NAT/Firewall

Session Per User

Type a number ranging from 1 to 2048 to limit the number of NAT/firewall sessions

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 NBG420N.

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.

Port Triggering

Rules

# This is the rule index number (read-only).

Name Type a unique name (up to 15 characters) for identification purposes. All

characters are permitted - including spaces.

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ZyXEL NBG420N Manuel d'utilisateur Page 144