Administrator's Guide - Kerio Software Archive

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Logs The first record represents a DNS record sent from the local network, from that the line is to be dialed (see above). The second log item (immediately after the first one) informs that the line has been hung-up. Unlike in case of a regular disconnection, time of connection and volume of transmitted data are not provided (because the line has not been connected). 22.8 Error Log 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. A typical error message in the Error log could be: a problem when starting a service (usually a collision at a particular port number), problems when writing to the disk or when initializing anti-virus, etc. Each record in the Error log contains error code and sub-code as two numbers in parentheses (x y). The error code (x) may fall into one of the following categories: • 1-99 — system resources problem (insufficient memory, memory allocation error, etc.) • 100-199 — license issues (the license has expired, will expire soon, invalid license, etc.) • 1000-1999 — internal errors (unable to read routing table or interface IP addresses, etc.) • 2000-2999 — license problems (the number of users would break license limit, unable to find license file, etc.) • 3000-3999 — configuration errors (unable to read configuration file, detected a loop in the configuration of the DNS module or the Proxy server, etc.) • 4000-4999 — network (socket) errors • 5000-5999 — errors while starting or stopping the Kerio Control Engine (problems with low-level driver, problems when initializing system libraries, services, configuration databases, etc.) • 6000-6999 — filesystem errors (cannot open /save /delete file) • 7000-7099 — SSL errors (problems with keys and certificates, etc.) • 7100-7199 — Kerio Web Filter errors (failed to activate the license, etc.) • 7200-7699 — Kerio VPN issues 296
22.9 Filter Log • 8000-8099 — HTTP cache errors (errors when reading / writing cache files, not enough space for cache, etc.) • 8100-8199 — errors of the Kerio Web Filter module • 8200-8299 — authentication subsystem errors • 8300-8399 — anti-virus module errors (anti-virus test not successful, problems when storing temporary files, etc.) • 8400-8499 — dial-up error (unable to read defined dial-up connections, line configuration error, etc.) • 8500-8599 — LDAP errors (server not found, login failed, etc.) • 8600-8699 — automatic updates and product registration issues • 8700-8799 — dynamic DNS issues (unable to connect to the server, failed to update the record, etc.) • 9000-9099 — Bandwidth Limiter errors • 10000-10099 — web interface issues • 10100-10199 — crashdumps • 10200-10299 — NTP client issues (time synchronization with the server) • 10300-10399 — the Kerio Control Administration web interface errors • 11000-11099 — intrusion prevention system issues Note: If you are not able to correct an error (or figure out what it is caused by) which is repeatedly reported in the Error log, do not hesitate to contact our technical support. For detailed information, refer to chapter 26 or to http://www.kerio.com/. 22.9 Filter Log This log gathers information on web pages and objects blocked/allowed by the HTTP and FTP filters (see chapters 13.2 and 13.5) and on packets matching traffic rules with the Log matching packets option enabled (see chapter 7) or meeting other conditions (e.g. logging of UPnP traffic — see chapter 18.2). Each log line includes the following information depending on the component which generated the log: • when an HTTP or FTP rule is applied: rule name, user, IP address of the host which sent the request, object’s URL • when a traffic rule is applied: detailed information about the packet that matches the rule (rule name, source and destination address, ports, size, etc.) 297
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Kerio Control Administrator’s Gui
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Contents 1 Quick Checklist . . . .
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13 HTTP and FTP filtering . . . . .
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26 Technical support . . . . . . .
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8. Enable the intrusion prevention
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2.2 Conflicting software Warning: S
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2.3 System requirements met). 2.3 S
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2.4 Installation - Windows • TCP/
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2.4 Installation - Windows Warning:
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2.5 Initial configuration wizard (W
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2.6 Upgrade and Uninstallation - Wi
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2.7 Installation - Software Applian
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2.7 Installation - Software Applian
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2.10 Kerio Control Engine Monitor (
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2.11 The firewall’s console (Soft
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3.1 Kerio Control Administration we
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3.2 Administration Console - the ma
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3.3 Administration Console - view p
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Chapter 4 License and Registration
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4.3 License information User is def
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4.4 Registration of the product in
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4.6 Subscription / Update Expiratio
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Chapter 5 Network interfaces Kerio
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5.3 Viewing and editing interfaces
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5.3 Viewing and editing interfaces
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5.5 Advanced dial-up settings Figur
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5.6 Supportive scripts for link con
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6.1 Persistent connection with a si
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6.1 Persistent connection with a si
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6.2 Connection with a single leased
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6.3 Connection Failover Advanced di
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6.3 Connection Failover Figure 6.8
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6.4 Network Load Balancing Note: 1.
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6.4 Network Load Balancing On the t
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6.4 Network Load Balancing Hint: Sp
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Chapter 7 Traffic Policy Traffic Ru
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7.1 Network Rules Wizard Step 4 —
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7.1 Network Rules Wizard Figure 7.5
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7.1 Network Rules Wizard Note: In t
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7.3 Definition of Custom Traffic Ru
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7.4 Basic Traffic Rule Types Do not
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7.4 Basic Traffic Rule Types Figure
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7.4 Basic Traffic Rule Types Transl
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7.5 Policy routing 7.5 Policy routi
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7.6 User accounts and groups in tra
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7.7 Partial Retirement of Protocol
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7.8 Use of Full cone NAT as possibl
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7.9 Media hairpinning the port of t
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8.1 Network intrusion prevention sy
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8.1 Network intrusion prevention sy
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8.2 MAC address filtering Figure 8.
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8.3 Special Security Settings Anti-
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8.4 P2P Eliminator Figure 8.5 Detec
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8.4 P2P Eliminator The Define servi
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9.1 DNS module of the firewall’s
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9.1 DNS module Figure 9.2 Editor of
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9.1 DNS module Figure 9.3 Specific
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9.2 DHCP server If the Do not forwa
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9.2 DHCP server Figure 9.5 DHCP ser
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9.2 DHCP server Leases IP scopes ca
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9.2 DHCP server Figure 9.13 DHCP se
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9.3 Dynamic DNS for public IP addre
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9.4 Proxy server Proxy Server Confi
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9.5 HTTP cache Note: The configurat
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9.5 HTTP cache other objects can be
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9.5 HTTP cache TTL TTL of objects m
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Chapter 10 Bandwidth Limiter The ma
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10.2 Bandwidth Limiter configuratio
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10.2 Bandwidth Limiter configuratio
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10.3 Detection of connections with
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11.1 Firewall User Authentication T
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11.1 Firewall User Authentication a
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12.1 Web interface and certificate
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12.2 User authentication at the web
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Chapter 13 HTTP and FTP filtering K
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13.2 URL Rules Rules in this sectio
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13.2 URL Rules for example a rule a
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13.2 URL Rules • A page informing
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13.3 Content Rating System (Kerio W
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13.3 Content Rating System (Kerio W
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13.4 Web content filtering by word
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13.4 Web content filtering by word
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13.5 FTP Policy Weight Word weight
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13.5 FTP Policy Open the General ta
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13.5 FTP Policy Scan content for vi
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14.2 How to choose and setup antivi
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14.2 How to choose and setup antivi
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14.3 HTTP and FTP scanning Warning:
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14.3 HTTP and FTP scanning Use the
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14.4 Email scanning If only an aste
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14.4 Email scanning Figure 14.9 Set
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14.5 Scanning of files transferred
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15.2 Time Ranges Figure 15.2 IP gro
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15.3 Services Figure 15.4 Time rang
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15.3 Services Protocol The communic
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15.4 URL Groups Note: 1. Generally,
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15.4 URL Groups Examples:: • www.
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16.1 Viewing and definitions of use
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16.2 Local user accounts Accounts m
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16.2 Local user accounts Name Usern
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16.2 Local user accounts Step 3 —
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16.2 Local user accounts Figure 16.
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16.2 Local user accounts Within thi
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16.3 Local user database: external
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16.4 User accounts in Active Direct
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16.5 User groups Note: In case of u
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16.5 User groups Using the Add and
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Chapter 17 Administrative settings
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17.3 Update Checking Figure 17.2 Tr
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17.3 Update Checking Last update ch
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23.6 Example of a more complex Keri
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24.1 Kerio Control SSL-VPN configur
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Chapter 25 Specific settings and tr
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25.3 Automatic user authentication
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25.3 Automatic user authentication
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25.4 FTP over Kerio Control proxy s
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25.5 Internet links dialed on deman
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The text file will be stored in the
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Appendix B Used open source items K
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Copyright © 2005 Harald Welte Dist
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Glossary of terms ActiveX This Micr
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Ident The Ident protocol is used fo
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Policy routing Advanced routing tec
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TCP Transmission Control Protocol i
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dial-up 64 dialing scripts 21, 58 h
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S service 89, 207 SIP 210 SSL-VPN 3
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