DNS Settings, Routing settings, 308 | Kerio Tech Firewall6 specs

Chapter 21 Kerio VPN

DNS Settings

DNS must be set properly at both sends of the tunnel so that it is possible to connect to hosts in the remote network using their DNS names. One method is to add DNS records of the hosts (to the hosts ﬁle) at each endpoint. However, this method is quite complicated and inﬂexible.

If the DNS forwarder in WinRoute is used as the DNS server at both ends of the tunnel, DNS queries (for DNS rules, refer to chapter 5.3) can be forwarded to hostnames in the corresponding domain of the DNS forwarder at the other end of the tunnel. DNS domain (or subdomain) must be used at both sides of the tunnel.

Note: To provide correct forwarding of DNS queries sent from the WinRoute host (at any side of the VPN tunnel), it is necessary that these queries are processed by DNS forwarder. To secure this, set local IP address as for the DNS server and specify former DNS servers in the WinRoute’s DNS forwarder.

Detailed guidance for the DNS conﬁguration is provided in chapter 21.5.

Routing settings

On the Advanced tab, you can set which method will be used to add routes provided by the remote endpoint of the tunnel to the local routing table as well as deﬁne custom routes to remote networks.

The Kerio VPN routing issue is described in detail in chapter 21.4.

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Kerio Tech Firewall6 manual DNS Settings, Routing settings, 308

Contents

Administrator’s Guide Kerio TechnologiesPage Contents 113 Remote Administration and Update Checks 209 Kerio Clientless SSL-VPN 355 393 Quick Checklist Page Kerio WinRoute Firewall Basic FeaturesIntroduction Additional Features Kerio WinRoute Firewall Antivirus control Transparent support for Active DirectoryEmail alerts User quotas Conﬂicting software Clientless SSL-VPNCollision of low-level drivers Port collision Antivirus applications Installation InstallationSteps to be taken before the installation System requirements Installation 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 Upgrade from WinRoute Pro Update CheckerSetting of administration username and password Conﬁguration Wizard Remote IP address Remote AccessEnable remote access Initial conﬁguration Allowing remote administration WinRoute Administration Administration Window WinRoute Administration Administration Window Main menuFile Help menu Detection of WinRoute Firewall Engine connection drop-out Administration WindowStatus bar View Settings Column customization in Interfaces View Settings License types optional components Product Registration and LicensingLicense types and number of users License types and number of users Deciding on a number of users licenses License information ProductCopyright Homepage License ID Subscription expiration dateProduct expiration date Number of users Registration of the product in the Administration Console Registration of the trial version Registration of the product in the Administration Console Trial version registration security code Trial version registration other information Registration of the purchased product Trial version registration Trial ID Product Registration and Licensing Registration of the product in the Administration Console 10 Product registration user information Update of registration information 12 Product registration summary Subscription / Update Expiration Product registration at the website Subscription / Update Expiration Bubble alerts User counter 15 The notice that the subscription has already expired License counter User counterStart WinRoute License release Settings for Interfaces and Network Services Network interfacesInterface IP Address and Mask Dial or Hang Up /Enebale, Disable Adapter infoAdd Modify Refresh Special interfacesDial-In VPN server Bind this interface Interface type selection Use login data from the RAS entry Use the following login dataInterface name RAS Entry Connection Dial-up demand dial Hangup if idle Advanced Connection Failover Edit Interface parameters Connection Failover Setup Enable automatic connection failoverConnection Failover Current connection Conﬁguration of primary and secondary Internet connection Dial-up Use Primary connectionSecondary connection DNS Forwarder DNS Forwarder conﬁguration DNS forwarding Enable DNS forwardingDNS Forwarder Enable cache for faster response of repeated queries Enable DNS forwardingClear cache Use custom forwarding 10 Speciﬁc settings of DNS forwarding Simple DNS resolution 11 DNS forwarding a new rule Before forwarding a query Combine the name ... with DNS domain Dhcp server Deﬁnition of Scopes and Reservations Dhcp serverDhcp Server Conﬁguration Lease time DNS serverWins server Domain Description 15 Dhcp server IP scopes deﬁnition Exclusions First address, Last addressSubnet mask Parameters Lease Reservations 00bca5f21e50 Bc-a5-f2-1e-50 Leases 20 Dhcp server list of leased and reserved IP addresses Dhcp server advanced options Windows RAS Proxy server Declined options Proxy Server Conﬁguration Enable non-transparent proxy serverProxy server Enable connection to any TCP port 22 Http proxy server settings Forward to parent proxy server Http//192.168.1.13128/pac/proxy.pac Enable cache on transparent proxy Enable cache on proxy serverHttp cache Http protocol TTL Http cache Cache size Cache Options Memory cache sizeMax Http object size URL Speciﬁc Settings URL Cache status and administration TTL 26 Http cache administration dialog Traﬃc Policy Network Rules Wizard Selection of Internet connection type Network Rules WizardInformation Network adapter or dial-up selection Network Policy Wizard selection of a connected adapter Internet access limitations Allow access to all services Allow access to the following services only Enabling Kerio VPN traﬃc Service is running on Service NAT Generating the rules Rules Created by the Wizard Icmp traﬃc Local Traﬃc Firewall Traﬃc Name How traﬃc rules workDeﬁnition of Custom Traﬃc Rules Source, Destination 12 Traﬃc rule name, color and rule description IP range e.g Deﬁnition of Custom Traﬃc Rules Service 100 Action 101 Log 102 Translation 103 104 20 Traﬃc rule destination address translation 105 Valid onProtocol inspector Basic Traﬃc Rule Types IP Translation NATSource Destination Translation Placing the rulePort mapping 107 108 109 Limiting Internet AccessMultihoming 110 Exclusions 111 112 How the bandwidth limiter works and how to use it Speed limits for big data volumes transmissionsBandwidth Limiter Speed limits for users with their quota exceeded Setting limit values Bandwidth Limiter conﬁgurationBandwidth Limiter 114 115 ServicesAdvanced Options IP Addresses and Time Interval 116 Bandwidth Limiter selection of network services 117 Detection of connections with large data volume transferred 118 119 Detection of connections with large data volume transferredExamples 120 121 User AuthenticationFirewall User Authentication 122 User AuthenticationUser authentication advanced options Firewall User Authentication Redirection to the authenticationEnable non-transparent proxy server authentication Automatic authentication Ntlm Automatically logout users when they are inactive 124 Enable Kerio SSL-VPN server Enable Web Interface HttpWeb Interface Web Interface Parameters Conﬁguration Enable secured Web Interface Https Allow access only from these IP addressesWeb Interface WinRoute server name Conﬁguration of ports of the Web Interface 127 128 SSL Certiﬁcate for the Web InterfaceGenerate or Import Certiﬁcate 129 SSL certiﬁcate of WinRoute’s Web interface Login/logout Web Interface Language PreferencesUsers logged 130 131 Login/logoutDrdolittle@usoffice.company.com 132 User password authenticationLog out 133 Status information and user statisticsStatus information and user statistics User preferences 134 135 Save settingsUser preferences 10 Editing user password 136 137 Http protocolFTP protocol 138 Conditions for Http and FTP ﬁlteringURL Rules URL Rules 139 URL Rules Deﬁnition 140 141 If user accessing the URL isURL matches criteria Allow access to the Web site 142 Valid at time interval Valid for IP address groupValid if Mime type is Denial options WWW content scanning options Scan content for viruses according to scanning rulesDeny Web pages containing 144 Http Inspection Advanced Options 145 Global rules for Web elements Allow Html ActiveX objectsAllow Script Html tags 146 Content Rating System ISS OrangeWeb Filter Allow Html JavaScript pop-up windowsAllow applet Html tags Allow cross-domain referrer ISS OrangeWeb Filter conﬁguration 148 Enable ISS OrangeWeb Filter Categorize each page regardless of Http rulesServer ISS OrangeWeb Filter Deployment 150 ISS OrangeWeb Filter rule Web content ﬁltering by word occurrence 151 Deﬁnition of rules ﬁltering by word occurrence 152 Word groups 153 Deﬁnition of forbidden words 154 Weight FTP PolicyGroup Keyword If user accessing the FTP server is FTP Rules DeﬁnitionFTP server is 156 15 FTP Rule basic parameters Content 158 159 160 Antivirus controlConditions and limitations of antivirus scan Conditions and limitations of antivirus scan 161 How to choose and setup antiviruses Antivirus controlIntegrated McAfee 162 Check for update every ... hours Last update check performed ... agoUpdate now Current virus database is 164 Antivirus settingsExternal antivirus 165 An example of a traﬃc rule for outgoing Smtp traﬃc check Http and FTP scanning Http and FTP scanning 167 168 Http and FTP scanning rulesCondition Mime type 169 Email scanning 170 Email scanning 171 172 173 IP Address GroupsCreating and Editing IP Address Groups Time Intervals DeﬁnitionsName Type Time range types AbsoluteWeekly Daily Time Interval Type From, ToValid at days 176 177 ServicesServices 178 ProtocolProtocol inspector 179 Source Port and Destination PortProtocol Inspectors URL Groups 180 URL Groups 181 Deﬁnitions Group 182 User Accounts and Groups Internal user databaseImport of user accounts from Active Directory 183 184 Viewing and deﬁnitions of user accountsUser Accounts and Groups Local user accounts Local user accounts Accounts mapped from the Active Directory domainEdit User 186 Local user accounts Creating a local user accountBasic information Full Name Authentication Account is disabledEmail Address Domain template 189 NT domain / KerberosGroups Access rights 190 No access to administration Read only access to administrationFull access to administration User can override WWW content rules 192 Data transmission quotaTransfer quota 193 Content rulesQuota exceed action User’s IP addresses 194 Editing User Account 195 196 Active DirectoryNT domain Automatic import of user accounts from Active Directory 197 Manual import of user accounts 198 Active Directory domains mapping Active Directory domains mappingDomain mapping requirements 199 Domain Access Single domain mappingActive Directory mapping 200 201 13 Active Directory domain mapping 202 NT authentication supportMultiple domains mapping 203 16 Conversion of user accounts 204 User groupsUser groups Deﬁnitions User groups Creating a new local user groupName and description of the group 205 Group access rights Read only accessGroup members 206 207 Users can override WWW content rulesUsers can connect using VPN 208 Users are allowed to use P2P networksUsers are allowed to view statistics Remote Administration and Update Checks Setting Remote AdministrationHow to allow remote administration from the Internet 209 210 Update CheckingRemote Administration and Update Checks Update Checking Check for new versionsCheck also for beta versions Check now 212 Advanced security features 15.1 P2P EliminatorP2P Eliminator Conﬁguration 213 Advanced security features 214 215 15.1 P2P EliminatorParameters for detection of P2P networks Special Security Settings 216 Special Security Settings Anti-SpooﬁngConnections Count Limit 217 VPN using IPSec Protocol EnableEnable pass-through only for hosts IPSec preferences VPN using IPSec Protocol WinRoute’s IPSec conﬁgurationIPSec client in local network 219 220 Traﬃc rule for one IPSec client in the local network IPSec server in local network 221 Other settings Routing table Routing table Route TypesStatic routes 223 Deﬁnitions of Dynamic and Static Rules Network, Network MaskGateway Metric Demand Dial Demand DialRemoving routes from the Routing Table How demand dial works 226 Technical Peculiarities and Limitations 227 Setting Rules for Demand Dial 228 Dial of local DNS names 229 Enable UPnP Port mapping timeoutUniversal Plug-and-Play UPnP Conﬁguration of the UPnP support Relay Smtp server Relay Smtp serverLog packets Log connections Smtp requires authentication Specify sender email address in From headerTest 232 233 234 Status InformationActive hosts and connected users Login time Login durationHostname User Active Hosts dialog options Detailed information on a selected host and user Traﬃc information 238 239 Activity DescriptionConnections Source, Destination 240 Histogram 241 Show connections related to the selected process 242 Show connections related to the selected process 243 244 Options of the Connections DialogKill connection Color Settings Font ColorBackground Color 245 246 Alerts SettingsAlerts 247 AlertsAlert Alert Templates 248 249 \Program Files\Kerio\WinRoute Firewall\templates by defaultAlerts overview in Administration Console 250 13 Details of a selected event 251 Basic statisticsInterface statistics Reset interface statistics Basic statisticsInterface Statistics menu 252 Interface statistics Remove interface statisticsGraphical view of interface load 253 User Statistics data volumes and quotas 254 255 User Statistics data volumes and quotasUser Statistics dialog options Reset user statistics Remove user statisticsView host 256 257 Kerio StaR statistics and reportingMonitoring and storage of statistic data Settings for statistics and quota Kerio StaR statistics and reportingRequirements of the statistics 258 Settings for statistics and quota Enable/disable gathering of statistic dataAdvanced settings for statistics 259 Statistics and quota restrictions 260 Accessing the statistics from the WinRoute host Remote access to the statisticsConnection to StaR and viewing statistics Statistics and quota accounting periods StaR page in the web interface 262 Accounting period 263 264 Custom accounting period 265 Overall ViewOverall View 266 Top Requested Web CategoriesTop 5 users Used Protocol 267 268 269 User statisticsUser statistics Users by Traﬃc 13 The Users by Traﬃc table Top Visited Websites Top Visited Websites Top Requested Web Categories 272 273 16 Top visited websites sorted by categories 274 Log settings LogsFilename.log 275 File Logging 276 277 Log settingsSyslog Logging Logs Context Menu Logs Context Menu FindHighlighting Select font Logs Encoding Log debugClear log Log highlighting Log highlighting settings Debug log advanced settings 282 Alert Log Alert Log 284 20.4 Conﬁg LogLogs 285 Connection LogConnection Log 286 Debug LogDial Log Page 15/Mar/2004 155912 Line Connection disconnected 288 289 Error LogError Log 290 ’McAfee update’ rule nameFilter Log 291 Http logHttp log 1058444114.733 0 192.168.64.64 TCPMISS/304 292 293 Security LogSecurity Log Authentication service Client IP address reason 294 Sslvpn Log Sslvpn Log17/Dec/2004 121133 Engine Startup 17/Dec/2004 122243 Engine Shutdown Web Log 24/Apr/2003 102951 192.168.44.128 james Web Log 297 Kerio VPN 298 VPN Server Conﬁguration 299 Enable VPN server Kerio VPNGeneral IP address assignment SSL certiﬁcate 301 302 AdvancedListen on port Custom Routes 303 304 21.2 Conﬁguration of VPN clientsBasic conﬁguration of traﬃc rules for VPN clients Setting up VPN servers Deﬁnition of a tunnel to a remote serverName of the tunnel 305 Conﬁguration 306 Conﬁguration of a remote end of the tunnel 307 308 DNS SettingsRouting settings Connection establishment 309 Traﬃc Policy Settings for VPN 310 Exchange of routing information Exchange of routing informationRouting conﬁguration options 311 312 Update of routing tablesRoutes provided automatically 313 Example of Kerio VPN conﬁguration company with a ﬁlial oﬃceSpeciﬁcation Common method 314 315 Headquarters conﬁguration 316 14 Headquarter creating default traﬃc rules for Kerio VPN 317 318 16 Headquarter DNS forwarder conﬁguration 319 320 19 Headquarters VPN server conﬁguration LAN 321 Conﬁguration of a ﬁlial oﬃce 322 24 Filial oﬃce default traﬃc rules for Kerio VPN 323 324 25 Filial oﬃce DNS forwarder conﬁguration 325 326 28 Filial oﬃce VPN server conﬁguration 327 29 Filial oﬃce deﬁnition of VPN tunnel for the headquarters 328 Example of a more complex Kerio VPN conﬁgurationVPN test Common method 329 330 331 33 Headquarter creating default traﬃc rules for Kerio VPN 332 333 35 Headquarter DNS forwarder conﬁguration Kerio VPN 335 38 Headquarters VPN server conﬁguration 336 39 Headquarter deﬁnition of VPN tunnel for the London ﬁlial 337 338 339 43 Headquarter ﬁnal traﬃc rules Conﬁguration of the London ﬁlial 340 46 The London ﬁlial oﬃce default traﬃc rules for Kerio VPN 341 48 The London ﬁlial oﬃce DNS forwarding settings 342 343 344 345 346 54 The London ﬁlial oﬃce ﬁnal traﬃc rules Conﬁguration of the Paris ﬁlial 347 348 57 The Paris ﬁlial oﬃce DNS forwarder conﬁguration 349 59 The Paris ﬁlial oﬃce VPN server conﬁguration 350 351 352 353 64 The Paris ﬁlial oﬃce ﬁnal traﬃc rules 354 Kerio Clientless SSL-VPN 22.1 Conﬁguration of WinRoute’s SSL-VPNSSL-VPN conﬁguration 355 356 Allowing access from the InternetKerio Clientless SSL-VPN Usage of the SSL-VPN interface Usage of the SSL-VPN interfaceHttps//server Https//server12345 358 Sidneywashington@usoffice.company.comHandling ﬁles and folders \\server\folder\subfolder Antivirus controlBookmarks 359 360 TroubleshootingDetection of incorrect conﬁguration of the default gateway 23.2 Conﬁguration Backup and Transfer Sslcert LicenseCache.CFS Dnscache.cfg 363 Handling conﬁguration ﬁles Conﬁguration backup recoveryStar List name=Interfaces 365 Automatic user authentication using NtlmGeneral conditions WinRoute Conﬁguration 366 Automatic user authentication using Ntlm Ntlm authentication processWeb browsers Microsoft Internet Explorer 368 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 Enabling automatic authentication 371 372 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 12 Setting proxy server for FTP in Total Commander 374 Network Load Balancing Basic Information and System RequirementsNetwork Conﬁguration 375 Network Load Balancing 376 377 24.3 Conﬁguration of the servers in the clusterNLB conﬁguration for Server1 378 Server 1 cluster parameters NLB conﬁguration for Server2 379 Technical support Essential InformationDescription 380 Error Log Files Tested in Beta versionInformational File License type and license number Czech Republic ContactsUnited Kingdom Legal Presumption Used open-source libraries LibiconvOpenSSL 384 Prototype Copyright 2005 Sam StephensonZlib 385 Default gateway Glossary of termsActiveX Cluster 387 FirewallGreylisting Glossary of terms IP address IPSecKerberos 388 Network adapter P2P networkPacket Port Glossary of terms Proxy serverRouting table Script Spooﬁng 391 TCP/IP 392 Index 393 Index 394 Ntlm 395 VPN 396 133 397