Chapter 5 WAN Setup
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5.8 NAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a
host in a packet, for example, the source address of an outgoing packet, used within one
network to a different IP address known within another network.
5.9 Nailed-Up Connection (PPP)
A nailed-up connection is a dial-up line where the connection is always up regardless of traffic
demand. The ZyXEL Device does two things when you specify a nailed-up connection. The
first is that idle timeout is disabled. The second is that the ZyXEL Device will try to bring up
the connection when turned on and whenever the connection is down. A nailed-up connection
can be very expensive for obvious reasons.
Do not specify a nailed-up connection unless your telephone company offers flat-rate service
or you need a constant connection and the cost is of no concern
5.10 PPPoA WAN Connection Setup
When you select PPPoA in the second WAN setup add (or edit) screen, this screen displays
next. Use this screen to configure PPPoA connection settings.
Figure 25
Advanced Setup > WAN > Add (3: PPPoA)
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Страница 130: ...Chapter 19 SNMP P 663H 51 User s Guide 130 ...
Страница 132: ...Chapter 20 Time P 663H 51 User s Guide 132 ...
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Страница 141: ...141 PART IV Troubleshooting and Specifications Troubleshooting 143 Product Specifications 147 ...
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Страница 152: ...Chapter 25 Product Specifications P 663H 51 User s Guide 152 ...
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Страница 188: ...Appendix D Common Services P 663H 51 User s Guide 188 ...
Страница 196: ...Appendix F Legal Information P 663H 51 User s Guide 196 ...
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