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Kerio Tech Firewall6 manual 233

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16.4 Relay SMTP server

Warning:

1.If SMTP is speciﬁed by a DNS name, it cannot be used until WinRoute resolves a cor- responding IP address (by a DNS query). The IP address of speciﬁed SMTP server cannot be resolved warning message is displayed in the SMTP Relay tab until the IP address is not found. If the warning is still displayed, this implies that an invalid (non-existent) DNS name is speciﬁed or the DNS server does not respond.

If the warning on the SMTP server tab is still displayed, it means that an invalid DNS name was speciﬁed or that an error occured in the communication (DNS server is not responding). Therefore, we recommend you to specify SMTP server by an IP address if possible.

2.Communication with the SMTP server must not be blocked by any rule, otherwise the Connection to SMTP server is blocked by traﬃc rules error is reported upon clicking the Apply button.

For detailed information about traﬃc rules, refer to chapter 6.

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Contents

Kerio Technologies Administrator’s GuidePage Contents 113 Remote Administration and Update Checks 209 Kerio Clientless SSL-VPN 355 393 Quick Checklist Page Kerio WinRoute Firewall Basic FeaturesIntroduction Kerio WinRoute Firewall Additional FeaturesTransparent support for Active Directory Antivirus controlEmail alerts User quotasClientless SSL-VPN Conﬂicting softwareCollision of low-level drivers Port collisionAntivirus applications Installation InstallationSteps to be taken before the installation System requirementsInstallation and Basic Conﬁguration Guide Custom installation selecting optional components Protection of the installed product Conﬂicting Applications and System Services WinRoute Engine Monitor WinRoute ComponentsWinRoute Firewall Engine WinRoute Engine Monitor Kerio Administration ConsoleWinRoute Engine Monitor Upgrade and Uninstallation Typically the path C\Program Files\Kerio\WinRoute Firewall Upgrade and UninstallationUninstallation Update Checker Upgrade from WinRoute ProSetting of administration username and password Conﬁguration WizardRemote IP address Remote AccessEnable remote access Initial conﬁguration Allowing remote administration Administration Window WinRoute AdministrationAdministration Window Main menu WinRoute AdministrationFile Help menuDetection of WinRoute Firewall Engine connection drop-out Administration WindowStatus bar Column customization in Interfaces View SettingsView Settings License types optional components Product Registration and LicensingLicense types and number of users Deciding on a number of users licenses License types and number of usersProduct License informationCopyright HomepageSubscription expiration date License IDProduct expiration date Number of usersRegistration of the trial version Registration of the product in the Administration ConsoleTrial version registration security code Registration of the product in the Administration ConsoleTrial version registration other information Trial version registration Trial ID Registration of the purchased productProduct Registration and Licensing Registration of the product in the Administration Console 10 Product registration user information 12 Product registration summary Update of registration informationProduct registration at the website Subscription / Update ExpirationBubble alerts Subscription / Update Expiration15 The notice that the subscription has already expired User counterLicense counter User counterStart WinRoute License release Network interfaces Settings for Interfaces and Network ServicesInterface IP Address and MaskAdapter info Dial or Hang Up /Enebale, DisableAdd ModifySpecial interfaces RefreshDial-In VPN serverInterface type selection Bind this interfaceUse the following login data Use login data from the RAS entryInterface name RAS EntryDial-up demand dial ConnectionAdvanced Hangup if idleEdit Interface parameters Connection FailoverEnable automatic connection failover Connection Failover SetupConnection Failover Current connectionConﬁguration of primary and secondary Internet connection Dial-up Use Primary connectionSecondary connection DNS Forwarder conﬁguration DNS ForwarderDNS forwarding Enable DNS forwardingDNS Forwarder Enable DNS forwarding Enable cache for faster response of repeated queriesClear cache Use custom forwarding10 Speciﬁc settings of DNS forwarding 11 DNS forwarding a new rule Simple DNS resolutionCombine the name ... with DNS domain Before forwarding a queryDhcp server Deﬁnition of Scopes and Reservations Dhcp serverDhcp Server Conﬁguration DNS server Lease timeWins server Domain15 Dhcp server IP scopes deﬁnition DescriptionExclusions First address, Last addressSubnet mask Parameters 00bca5f21e50 Lease ReservationsLeases Bc-a5-f2-1e-5020 Dhcp server list of leased and reserved IP addresses Windows RAS Dhcp server advanced optionsDeclined options Proxy serverProxy Server Conﬁguration Enable non-transparent proxy serverProxy server 22 Http proxy server settings Enable connection to any TCP portHttp//192.168.1.13128/pac/proxy.pac Forward to parent proxy serverEnable cache on proxy server Enable cache on transparent proxyHttp cache Http protocol TTLCache size Http cacheCache Options Memory cache sizeMax Http object size URL URL Speciﬁc SettingsTTL Cache status and administration26 Http cache administration dialog Network Rules Wizard Traﬃc PolicySelection of Internet connection type Network Rules WizardInformation Network Policy Wizard selection of a connected adapter Network adapter or dial-up selectionAllow access to all services Internet access limitationsEnabling Kerio VPN traﬃc Allow access to the following services onlyService Service is running onGenerating the rules NATIcmp traﬃc Rules Created by the WizardLocal Traﬃc Firewall Traﬃc Name How traﬃc rules workDeﬁnition of Custom Traﬃc Rules 12 Traﬃc rule name, color and rule description Source, DestinationIP range e.g Deﬁnition of Custom Traﬃc Rules 100 Service101 Action102 Log103 Translation20 Traﬃc rule destination address translation 104105 Valid onProtocol inspector IP Translation NAT Basic Traﬃc Rule TypesSource DestinationPlacing the rule TranslationPort mapping 107108 109 Limiting Internet AccessMultihoming 110 111 Exclusions112 Speed limits for big data volumes transmissions How the bandwidth limiter works and how to use itBandwidth Limiter Speed limits for users with their quota exceededBandwidth Limiter conﬁguration Setting limit valuesBandwidth Limiter 114115 ServicesAdvanced Options 116 IP Addresses and Time Interval117 Bandwidth Limiter selection of network services118 Detection of connections with large data volume transferred119 Detection of connections with large data volume transferredExamples 120 121 User AuthenticationFirewall User Authentication 122 User AuthenticationUser authentication advanced options Redirection to the authentication Firewall User AuthenticationEnable non-transparent proxy server authentication Automatic authentication Ntlm124 Automatically logout users when they are inactiveEnable Web Interface Http Enable Kerio SSL-VPN serverWeb Interface Web Interface Parameters ConﬁgurationAllow access only from these IP addresses Enable secured Web Interface HttpsWeb Interface WinRoute server name127 Conﬁguration of ports of the Web Interface128 SSL Certiﬁcate for the Web InterfaceGenerate or Import Certiﬁcate SSL certiﬁcate of WinRoute’s Web interface 129Web Interface Language Preferences Login/logoutUsers logged 130131 Login/logoutDrdolittle@usoffice.company.com 132 User password authenticationLog out 133 Status information and user statisticsStatus information and user statistics 134 User preferences135 Save settingsUser preferences 136 10 Editing user password137 Http protocolFTP protocol 138 Conditions for Http and FTP ﬁlteringURL Rules 139 URL Rules140 URL Rules Deﬁnition141 If user accessing the URL isURL matches criteria 142 Allow access to the Web siteValid for IP address group Valid at time intervalValid if Mime type is Denial optionsScan content for viruses according to scanning rules WWW content scanning optionsDeny Web pages containing 144145 Http Inspection Advanced OptionsAllow Html ActiveX objects Global rules for Web elementsAllow Script Html tags 146Allow Html JavaScript pop-up windows Content Rating System ISS OrangeWeb FilterAllow applet Html tags Allow cross-domain referrer148 ISS OrangeWeb Filter conﬁgurationCategorize each page regardless of Http rules Enable ISS OrangeWeb FilterServer ISS OrangeWeb Filter DeploymentISS OrangeWeb Filter rule 150151 Web content ﬁltering by word occurrence152 Deﬁnition of rules ﬁltering by word occurrence153 Word groups154 Deﬁnition of forbidden wordsFTP Policy WeightGroup KeywordFTP Rules Deﬁnition If user accessing the FTP server isFTP server is 15615 FTP Rule basic parameters 158 Content159 160 Antivirus controlConditions and limitations of antivirus scan 161 Conditions and limitations of antivirus scanAntivirus control How to choose and setup antivirusesIntegrated McAfee 162Last update check performed ... ago Check for update every ... hoursUpdate now Current virus database is164 Antivirus settingsExternal antivirus An example of a traﬃc rule for outgoing Smtp traﬃc check 165Http and FTP scanning 167 Http and FTP scanning168 Http and FTP scanning rulesCondition 169 Mime type170 Email scanning171 Email scanning172 173 IP Address GroupsCreating and Editing IP Address Groups Deﬁnitions Time IntervalsName TypeAbsolute Time range typesWeekly DailyFrom, To Time Interval TypeValid at days 176177 ServicesServices 178 ProtocolProtocol inspector 179 Source Port and Destination PortProtocol Inspectors 180 URL Groups181 URL Groups182 Deﬁnitions GroupInternal user database User Accounts and GroupsImport of user accounts from Active Directory 183184 Viewing and deﬁnitions of user accountsUser Accounts and Groups Local user accounts Accounts mapped from the Active Directory domain Local user accountsEdit User 186Creating a local user account Local user accountsBasic information Full NameAccount is disabled AuthenticationEmail Address Domain template189 NT domain / KerberosGroups 190 Access rightsRead only access to administration No access to administrationFull access to administration User can override WWW content rules192 Data transmission quotaTransfer quota 193 Content rulesQuota exceed action 194 User’s IP addresses195 Editing User Account196 Active DirectoryNT domain 197 Automatic import of user accounts from Active Directory198 Manual import of user accountsActive Directory domains mapping Active Directory domains mappingDomain mapping requirements 199Single domain mapping Domain AccessActive Directory mapping 20013 Active Directory domain mapping 201202 NT authentication supportMultiple domains mapping 16 Conversion of user accounts 203204 User groupsUser groups Deﬁnitions Creating a new local user group User groupsName and description of the group 205Read only access Group access rightsGroup members 206207 Users can override WWW content rulesUsers can connect using VPN 208 Users are allowed to use P2P networksUsers are allowed to view statistics Setting Remote Administration Remote Administration and Update ChecksHow to allow remote administration from the Internet 209210 Update CheckingRemote Administration and Update Checks Check for new versions Update CheckingCheck also for beta versions Check now212 15.1 P2P Eliminator Advanced security featuresP2P Eliminator Conﬁguration 213214 Advanced security features215 15.1 P2P EliminatorParameters for detection of P2P networks 216 Special Security SettingsAnti-Spooﬁng Special Security SettingsConnections Count Limit 217Enable VPN using IPSec ProtocolEnable pass-through only for hosts IPSec preferencesWinRoute’s IPSec conﬁguration VPN using IPSec ProtocolIPSec client in local network 219Traﬃc rule for one IPSec client in the local network 220221 IPSec server in local networkRouting table Other settingsRoute Types Routing tableStatic routes 223Network, Network Mask Deﬁnitions of Dynamic and Static RulesGateway MetricDemand Dial Demand DialRemoving routes from the Routing Table How demand dial works226 227 Technical Peculiarities and Limitations228 Setting Rules for Demand Dial229 Dial of local DNS namesPort mapping timeout Enable UPnPUniversal Plug-and-Play UPnP Conﬁguration of the UPnP supportRelay Smtp server Relay Smtp serverLog packets Log connectionsSpecify sender email address in From header Smtp requires authenticationTest 232233 234 Status InformationActive hosts and connected users Login duration Login timeHostname UserActive Hosts dialog options Detailed information on a selected host and user 238 Traﬃc information239 Activity DescriptionConnections 240 Source, Destination241 Histogram242 Show connections related to the selected process243 Show connections related to the selected process244 Options of the Connections DialogKill connection Font Color Color SettingsBackground Color 245246 Alerts SettingsAlerts 247 AlertsAlert 248 Alert Templates249 \Program Files\Kerio\WinRoute Firewall\templates by defaultAlerts overview in Administration Console 13 Details of a selected event 250251 Basic statisticsInterface statistics Basic statistics Reset interface statisticsInterface Statistics menu 252Remove interface statistics Interface statisticsGraphical view of interface load 253254 User Statistics data volumes and quotas255 User Statistics data volumes and quotasUser Statistics dialog options Remove user statistics Reset user statisticsView host 256257 Kerio StaR statistics and reportingMonitoring and storage of statistic data Kerio StaR statistics and reporting Settings for statistics and quotaRequirements of the statistics 258Enable/disable gathering of statistic data Settings for statistics and quotaAdvanced settings for statistics 259260 Statistics and quota restrictionsRemote access to the statistics Accessing the statistics from the WinRoute hostConnection to StaR and viewing statistics Statistics and quota accounting periods262 StaR page in the web interface263 Accounting periodCustom accounting period 264265 Overall ViewOverall View 266 Top Requested Web CategoriesTop 5 users 267 Used Protocol268 269 User statisticsUser statistics 13 The Users by Traﬃc table Users by TraﬃcTop Visited Websites Top Visited Websites272 Top Requested Web Categories16 Top visited websites sorted by categories 273274 Logs Log settingsFilename.log 275276 File Logging277 Log settingsSyslog Logging Logs Context Menu Find Logs Context MenuHighlighting Select fontLog debug Logs EncodingClear log Log highlightingLog highlighting settings 282 Debug log advanced settingsAlert Log Alert Log284 20.4 Conﬁg LogLogs 285 Connection LogConnection Log 286 Debug LogDial Log Page 288 15/Mar/2004 155912 Line Connection disconnected289 Error LogError Log 290 ’McAfee update’ rule nameFilter Log 291 Http logHttp log 292 1058444114.733 0 192.168.64.64 TCPMISS/304293 Security LogSecurity Log 294 Authentication service Client IP address reasonSslvpn Log Sslvpn Log17/Dec/2004 121133 Engine Startup 17/Dec/2004 122243 Engine Shutdown24/Apr/2003 102951 192.168.44.128 james Web LogWeb Log 297 298 Kerio VPN299 VPN Server ConﬁgurationKerio VPN Enable VPN serverGeneral IP address assignment301 SSL certiﬁcate302 AdvancedListen on port 303 Custom Routes304 21.2 Conﬁguration of VPN clientsBasic conﬁguration of traﬃc rules for VPN clients Deﬁnition of a tunnel to a remote server Setting up VPN serversName of the tunnel 305306 Conﬁguration307 Conﬁguration of a remote end of the tunnel308 DNS SettingsRouting settings 309 Connection establishment310 Traﬃc Policy Settings for VPNExchange of routing information Exchange of routing informationRouting conﬁguration options 311312 Update of routing tablesRoutes provided automatically 313 Example of Kerio VPN conﬁguration company with a ﬁlial oﬃceSpeciﬁcation 314 Common method315 316 Headquarters conﬁguration317 14 Headquarter creating default traﬃc rules for Kerio VPN16 Headquarter DNS forwarder conﬁguration 318319 19 Headquarters VPN server conﬁguration 320321 LAN322 Conﬁguration of a ﬁlial oﬃce323 24 Filial oﬃce default traﬃc rules for Kerio VPN25 Filial oﬃce DNS forwarder conﬁguration 324325 28 Filial oﬃce VPN server conﬁguration 32629 Filial oﬃce deﬁnition of VPN tunnel for the headquarters 327328 Example of a more complex Kerio VPN conﬁgurationVPN test 329 Common method330 331 332 33 Headquarter creating default traﬃc rules for Kerio VPN35 Headquarter DNS forwarder conﬁguration 333Kerio VPN 38 Headquarters VPN server conﬁguration 33539 Headquarter deﬁnition of VPN tunnel for the London ﬁlial 336337 338 43 Headquarter ﬁnal traﬃc rules 339340 Conﬁguration of the London ﬁlial341 46 The London ﬁlial oﬃce default traﬃc rules for Kerio VPN342 48 The London ﬁlial oﬃce DNS forwarding settings343 344 345 54 The London ﬁlial oﬃce ﬁnal traﬃc rules 346347 Conﬁguration of the Paris ﬁlial57 The Paris ﬁlial oﬃce DNS forwarder conﬁguration 34859 The Paris ﬁlial oﬃce VPN server conﬁguration 349350 351 352 64 The Paris ﬁlial oﬃce ﬁnal traﬃc rules 353354 22.1 Conﬁguration of WinRoute’s SSL-VPN Kerio Clientless SSL-VPNSSL-VPN conﬁguration 355356 Allowing access from the InternetKerio Clientless SSL-VPN Usage of the SSL-VPN interface Usage of the SSL-VPN interfaceHttps//server Https//server12345358 Sidneywashington@usoffice.company.comHandling ﬁles and folders Antivirus control \\server\folder\subfolderBookmarks 359360 TroubleshootingDetection of incorrect conﬁguration of the default gateway 23.2 Conﬁguration Backup and Transfer License SslcertCache.CFS Dnscache.cfg363 Handling conﬁguration ﬁles Conﬁguration backup recoveryStar List name=Interfaces 365 Automatic user authentication using NtlmGeneral conditions 366 WinRoute ConﬁgurationNtlm authentication process Automatic user authentication using NtlmWeb browsers Microsoft Internet Explorer368 Firefox/Netscape/Mozilla/SeaMonkeyFirefox/Netscape/Mozilla/SeaMonkey conﬁguration 369 Partial Retirement of Protocol InspectorPartial Retirement of Protocol Inspector 370 How to enable certain users to access the InternetUser accounts and groups in traﬃc rules 371 Enabling automatic authentication372 FTP on WinRoute’s proxy serverExample of a client conﬁguration web browser 373 Example of a client conﬁguration Total CommanderFTP on WinRoute’s proxy server 374 12 Setting proxy server for FTP in Total CommanderBasic Information and System Requirements Network Load BalancingNetwork Conﬁguration 375376 Network Load Balancing377 24.3 Conﬁguration of the servers in the clusterNLB conﬁguration for Server1 Server 1 cluster parameters 378379 NLB conﬁguration for Server2Essential Information Technical supportDescription 380Tested in Beta version Error Log FilesInformational File License type and license numberCzech Republic ContactsUnited Kingdom Legal Presumption Libiconv Used open-source librariesOpenSSL 384Copyright 2005 Sam Stephenson PrototypeZlib 385Glossary of terms Default gatewayActiveX Cluster387 FirewallGreylisting IPSec Glossary of terms IP addressKerberos 388P2P network Network adapterPacket PortProxy server Glossary of termsRouting table Script391 Spooﬁng392 TCP/IP393 Index394 Index395 Ntlm396 VPN397 133