Link translation

Web pages returned from a Web server published by a Microsoft Internet Security and Acceleration (ISA) Server 2006 Web publishing rule may include links containing the internal names of computers. Because external clients cannot resolve these names, these references will appear as broken links. ISA Server uses mappings to translate internal computer names in links on Web pages to publicly resolvable names. Each mapping translates the internal name (or IP address) of a Web site to the public name (or IP address) of the Web site. For example, a mapping can translate the internal name http://team to the public name http://team.contoso.com. A set of link translation mappings is called a link translation dictionary.

When link translation is enabled for a Web publishing rule, a default link translation dictionary is automatically created for the rule. For information about link translation dictionaries, see Link translation dictionaries.

For information about configuring link translation, see Configure link translation.

Implicit and explicit mappings

When link translation is enabled for a Web publishing rule, links in content sent from the published Web site to a client are translated according to the following mappings, which are stored in the effective link translation dictionary (translation table) for the rule:

Implicit rule-specific mappings. These mappings are added automatically and map the internal name (or IP address) of the server published by the Web publishing rule to the public name (or IP address) of the Web site, or if there are multiple public names, to one of its public names.
Explicit rule-specific mappings. These mappings are created by the user for the rule and map a string containing a private host name to a string containing a publicly resolvable host name. An explicit rule-specific mapping will override the implicit mapping of the rule in the case of a conflict.
Implicit global mappings. These mappings are automatically added to the global dictionary of an array for every Web publishing rule that is defined and enabled and has link translation enabled in the array. Implicit global mappings are derived from the implicit and explicit rule-specific mappings defined in each Web publishing rule.
Explicit global mappings. These mappings are created by the user in the global dictionary of an array and apply to all Web publishing rules in the array. These mappings override conflicting implicit global mappings. They are also used in cross-array link translation (Enterprise Edition only).
Cross-array link translation. In Enterprise Edition, when cross-array link translation is enabled, the mappings in the global dictionaries for all the arrays in the enterprise are added to the effective link translation dictionary of each Web publishing rule.

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