ZyXEL Communications XMG3512-B10A, Руководство пользователя

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Chapter 11 Network Address Translation (NAT)
XMG3512-B10A User’s Guide
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The following table describes the fields in this screen.
11.8 The Sessions Screen
Use this screen to limit the number of concurrent NAT sessions a client can use. Click Network Setting >
NAT > Sessions to display the following screen.
Figure 88 Network Setting > NAT > Sessions
The following table describes the fields in this screen.
Table 64 Address Mapping: Add/Edit
LABEL DESCRIPTION
Rule Name Enter a name to identify this rule using keyboard characters (A-Z, a-z, 1-2 and so on).
Type Choose the IP/port mapping type from one of the following.
One-to-One : This mode maps one local IP address to one global IP address. Note that port
numbers do not change for the One-to-one NAT mapping type.
Many-to-One : This mode maps multiple local IP addresses to one global IP address. This is
equivalent to SUA (i.e., PAT, port address translation), the XMG's Single User Account feature
that previous routers supported only.
Many-to-Many : This mode maps multiple local IP addresses to shared global IP addresses.
Local Start IP Enter the starting Inside Local IP Address (ILA).
Local End IP Enter the ending Inside Local IP Address (ILA). If the rule is for all local IP addresses, then this field
displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address. This
field is blank for
One-to-One mapping types.
Global Start IP Enter the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic IP
address from your ISP. You can only do this for the
Many-to-One mapping type.
Global End IP Enter the ending Inside Global IP Address (IGA). This field is blank for One-to-One and Many-to-
One mapping types.
WAN Interface Select a WAN interface to which the address mapping rule applies.
OK Click OK to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 65 Network Setting > NAT > Sessions
LABEL DESCRIPTION
MAX NAT
Session Per Host Use this field to set a limit to the number of concurrent NAT sessions each client host can have.
If only a few clients use peer to peer applications, you can raise this number to improve their
performance. With heavy peer-to-peer application use, lower this number to ensure no single
client uses too many of the available NAT sessions.
Apply Click this to save your changes on this screen.
Cancel Click this to exit this screen without saving any changes.