Using the Error log

Error log overview

Logs keep information records of selected events occurred in or detected by Kerio Control. For more information about configuring and using logs, see article Configuring and using logs in Kerio Control.

The Error log displays information about serious errors that affect the functionality of the entire firewall. The Kerio Control administrator should check this log regularly and try to eliminate problems found here. Otherwise, users might have problems with some services or/and serious security problems might arise.

Reading the Error log

Pattern of Error logs

[15/Apr/2013 15:00:51] (6) Automatic update error: Update failed.

• [15/Apr/2013 15:00:51] — timestamp (date and exact time when the error occurred),
• (6) — associated system error code (only for some errors),
• Automatic update error: Update failed. — error description (failure of the automatic update in this case).

Categories of logs recorded in the Error log:

• An issue associated with system resources (insufficient memory, memory allocation error, etc.),
• License issues (the license has expired, will expire soon, invalid license, the number of users would break license limit, unable to find license file, Software Maintenance expiration, etc.),
• Internal errors (unable to read routing table or interface IP addresses, etc.),
• Configuration errors (unable to read configuration file, detected aloop in the configuration of the DNSDomain Name System - A database enables the translation of hostnames to IP addresses and provides other domain related information. module or the Proxy server, etc.),
• Network (socket) errors,
• Errors while starting or stopping the Kerio Control (problems with low-level driver, problems when initializing system libraries, services, configuration databases, etc.),
• File system errors (cannot open/save/delete file),
• SSLSecure Sockets Layer - A protocol that ensures integral and secure communication between networks. errors (problems with keys and certificates, etc.),
• Kerio Control Web Filter errors (failed to activate the license, etc.),
• VPNVirtual private network - A network that enables users connect securely to a private network over the Internet. errors,
• HTTPHypertext Transfer Protocol - protocol for exchange of hypertext documents in HTML. cache errors (errors when reading/writing cache files, not enough space for cache, etc.),
• Checking subsystem errors,
• Antivirus module errors (antivirus test not successful, problems when storing temporary files, etc.),
• Dial-up errors (unable to read defined dial-up connections, line configuration error, etc.),
• LDAPLightweight Directory Access Protocol - A protocol that enables users to access centrally managed contacts. errors (server not found, login failed, etc.),
• Errors in automatic update and product registration,
• Dynamic DNS errors (unable to connect to the server, failed to update the record, etc.),
• Bandwidth Management errors,
• Errors of the web interface,
• Crashdumps after failure of the application,
• NTP client errors (synchronization of time with the server),
• The administration interface errors,
• Intrusion prevention systemA technology that protects against network and application-level attacks, securing organizations against intrusion attempts, malware, trojans etc. errors.