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- MS Active Directory (MS AD). Limitations: it is not possible to use Cyrillic characters in user login or password; EAP-MS-CHAP-v2 or MS-CHAP-v2 may be used for authorization;
- Custom LDAP (e.g., Open LDAP). Limitations: SLDAP is not supported, and user passwords must be stored in clear text.
Portal-based authorization:
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