Tandberg Data N3 6.3 Verifying the SRV record

TANDBERG Gatekeeper User Manual

then instruct named to reload the files

kill –s SIGHUP pid

4. Check the log files for any discrepancies

tail /var/log/messages

For more details of how to configure BIND servers and the DNS system in general see the

book “DNS and BIND”6.

6.3 Verifying the SRV record

There are a range of tools available to investigate DNS records. One commonly found on

Microsoft Windows and UNIX platforms is nslookup. Use this to verify that everything is

working as expected.

nslookup –querytype=srv _h323ls._udp.example.com

and check the output.

6 “DNS and BIND, Fourth Edition” Albitz and Liu, O’Reilly and Associates, ISBN: 0-596-00158-4

Contents

Main Trademarks and copyright Environmental Issues TANDBERGs Environmental Policy Environmental Considerations Operator Safety Summary Table Of Contents Page 1 Introduction Page 2 Installation 2.1 Unpacking 2.2 Mounting 2.3 Connecting Cables 2.4 Switching on the System 2.5 Gatekeeper Initial Configuration Page 3 Using the Gatekeeper 3.1 System Administration 3.2 Registration 3.3 Neighbor Gatekeepers 3.4 Alternate Gatekeepers Page 3.5 Call Control Page Page 3.6 Bandwidth Control IP Page 3.6.1 Bandwidth Control and Firewall Traversal 3.6.2 Bandwidth Control Examples Enterprise Branch Office Home Office Home sub-zone Page 3.7 Registration Control 3.7.1 Registration Restriction Policy 3.7.2 Authentication 3.8 H.235 Authentication 3.8.1 Authentication using a local database 3.8.2 Authentication using an LDAP server Securing the LDAP connection with TLS 3.9 URI Dialing 3.9.1 URI Dialing and firewall traversal 3.9.2 Creating DNS SRV records 3.10 Firewall traversal 3.10.1 Calling unregistered endpoints 3.11 Call Policy 3.11.1 Making Decisions Based on Addresses address-switch address otherwise not-present 3.11.2 CPL Script Actions location proxy reject Selective Call Screening 3.11.3 Unsupported CPL Elements 3.11.4 CPL Examples Call screening Call Redirection 4 Software Upgrade 4.1 Upgrading Using HTTP(S) 4.2 Upgrading Using SCP Page 5 Configuring the Gatekeeper 5.1 Status xstatus ? xstatus TANDBERG Gatekeeper User Manual 5.2 Configuration xconfiguration ? xconfiguration xconfiguration <name> xconfiguration <name> ? xconfiguration <name> <param1>: value1 <param2>: value2 Page Page Page Page TANDBERG Gatekeeper User Manual 40 Configuration commands Description 5.3 Command xcommand ? To get usage information for a specific command, type xcommand <commandname> ? Command Usage Description Page 5.4 History xhistory ? xhistory xhistory <name> 5.5 Feedback 5.6 Other commands Page 6 Appendix: Configuring DNS Servers 6.1 Microsoft DNS Server 6.2 BIND 8 & 9 6.3 Verifying the SRV record 7 Appendix: Configuring LDAP Servers 7.1 Microsoft Active Directory 7.1.1 Prerequisites 7.1.2 Adding H.350 objects Create the organizational hierarchy Add the H.350 objects 7.2 OpenLDAP 7.2.1 Prerequisites 7.2.2 Installing the H.350 schemas 7.2.3 Adding H.350 objects Create the organizational hierarchy Add the H.350 objects 7.2.4 Securing with TLS 8 Approvals EMC Emission - Radiated Electromagnetic Interference EMC Immunity Electrical Safety 9 Technical Specifications 10 Index