DNSMatcher retrieves the IP addresses of domain names. This can be used in domain name based policy decisions, for example to allow encrypted connections only to trusted e-banking sites.
DNSMatcher operates as follows: it resolves the IP addresses stored in the list of domain names using the specified Domain Name Server, and compares the results to the IP address of the connection (i.e., the IP address of the server or the client). The matcher returns a true value if the IP addresses resolved from the list of domain names include the IP address of the connection.
| Example 5.22. DNSMatcher example |
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The following DNSMatcher class uses the MatcherPolicy(name="ExampleDomainMatcher", matcher=DNSMatcher(server="dns.example.com", hosts=("example2.com", "example3.com")))
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Published on June 04, 2020
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