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Configuring NAT ·························································································································································· 1
Overview ············································································································································································ 1
Introduction to NAT ·················································································································································· 1
NAT control ······························································································································································· 2
NAT operation ·························································································································································· 2
Low-priority address pool ········································································································································ 5
Configuring NAT in the Web interface ·························································································································· 6
Configuration overview ··········································································································································· 6
Creating an address pool ······································································································································· 7
Configuring dynamic NAT ······································································································································ 8
Creating a static address mapping ························································································································ 9
Enabling static NAT on an interface ··················································································································· 11
Creating an internal server ··································································································································· 11
Configuring ACL-based NAT on the internal server ·························································································· 14
Configuring a DNS mapping ······························································································································· 14
NAT configuration example ································································································································· 15
Internal server configuration example ················································································································· 18
Configuring NAT at the CLI ·········································································································································· 21
NAT configuration task list at the CLI ·················································································································· 21
Configuring address translation··························································································································· 22
Configuring static NAT ········································································································································· 22
Configuring dynamic NAT ··································································································································· 23
Configuring an internal server ····························································································································· 25
Configuring ACL-based NAT on an internal server ··························································································· 26
Configuring DNS mapping ·································································································································· 26
Displaying and maintaining NAT ························································································································ 26
One-to-one static NAT configuration example ··································································································· 27
Dynamic NAT configuration example ················································································································· 27
Common internal server configuration example ································································································ 28
NAT DNS mapping configuration example ······································································································· 29
Troubleshooting NAT ····················································································································································· 30
Symptom 1 ····························································································································································· 30
Solution ··································································································································································· 30
Symptom 2 ····························································································································································· 31
Solution ··································································································································································· 31
Configuration guidelines ··············································································································································· 31
Configuring NAT-PT ··················································································································································· 32
Overview ········································································································································································· 32
Application scenario ············································································································································· 32
Basic concepts ······················································································································································· 32
Implementing NAT-PT ············································································································································ 33
NAT-PT limitations ················································································································································· 34
Protocols and standards ······································································································································· 34
NAT-PT configuration task list ······································································································································· 35
NAT-PT configuration task list on the IPv6 side ·································································································· 35
NAT-PT configuration task list on the IPv4 side ·································································································· 35
Configuring NAT-PT ······················································································································································· 35
Configuration prerequisites ·································································································································· 35
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