ZyXEL Communications LTE2566-M634, Руководство пользователя, Страница: 78 / 151

Chapter 10 NAT
LTE2566-M634 User’s Guide
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10.3 Port Trigger
To change your LTE2566-M634’s trigger port settings, click Configuration > Network > NAT > Port Trigger .
The screen appears as shown.
Note: Only one LAN computer can use a trigger port (range) at a time.
Figure 56 Configuration > Network > NAT > Port Trigger
The following table describes the labels in this screen.
10.4 ALG
Some NAT routers may include a SIP Application Layer Gateway (ALG). A SIP ALG allows SIP calls to pass
through NAT by examining and translating IP addresses embedded in the data stream. When the
LTE2566-M634 registers with the SIP register server, the SIP ALG translates the LTE2566-M634’s private IP
address inside the SIP data stream to a public IP address. You do not need to use STUN or an outbound
proxy if your LTE2566-M634 is behind a SIP ALG.
Table 30 Configuration > Network > NAT > Port Trigger
LABEL DESCRIPTION
# 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.
Start Port Type a port number or the starting port number in a range of port numbers.
End Port Type a port number or the ending port number in a range of port numbers.
Trigger Port The trigger port is a port that causes (or triggers) the LTE2566-M634 to record the IP address of
the LAN computer that sent the traffic to a server on the WAN.
Delete Click Delete to remove the trigger port rule.
Apply Click Apply to save your changes back to the LTE2566-M634.