| Event Id | 16 |
| Source | IAS |
| Description | A packet with type %1, which is not valid, was received on port %2 from client %3. |
| Event Information | According to Microsoft: CAUSE: RADIUS authentication of user requests is possible in ISA Server 2004. This can be configured in either a Web publishing rule or in an access rule. This enables ISA Server to verify user credentials from an Active Directory directory service domain without having to be a member of the domain. RESOLUTION: In a Microsoft Windows Server 2003 scenario, the built-in command-line tool Netsh.exe is used, while the resource kit tool Ipsecpol.exe is used for Windows 2000 Server. The administrator must check that the authentication and accounting ports are properly configured. |
| Reference Links | Internet Authentication Service (IAS) Configure IPsec Protection of ISA Server 2004 RADIUS Authentication Traffic |
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