200
D14049.07
March 2010
Grey Headline
(continued)
TANDBERG
VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Introduction
Overview and
status
System
configuration
VCS
configuration
Zones and
neighbors
Clustering and
peers
Call
processing
Bandwidth
control
Firewall
traversal
Appendices
Applications
Maintenance
LDAP configuration for device authentication
Securing with TLS
The connection to the LDAP server can be encrypted by enabling
Transport Level Security (TLS) on the connection. To do this you
must create an X.509 certificate for the LDAP server to allow
the VCS to verify the server’s identity. After the certificate has
been created you will need to install the following three files
associated with the certificate onto the LDAP server:
•
The certificate for the LDAP server.
•
The private key for the LDAP server.
•
The certificate of the Certificate Authority (CA) that was used
to sign the LDAP server’s certificate.
All three files should be in PEM file format.
The LDAP server must be configured to use the certificate. To do
this:
•
Edit
/etc/openldap/slapd.conf
and add the following
three lines:
TLSCACertificateFile <path to CA certificate>
TLSCertificateFile <path to LDAP server
certificate>
TLSCertificateKeyFile <path to LDAP private
key>
The OpenLDAP daemon (
slapd
) must be restarted for the TLS
settings to take effect.
To configure the VCS to use TLS on the connection to the LDAP
server you must upload the CA’s certificate as a trusted CA
certificate. This can be done on the VCS by navigating to:
•
Maintenance > Security certificates
Adding H.350 objects
Create the organizational hierarchy
1. Create an
ldif
file with the following contents:
# This example creates a single
# organizational unit to contain the H.350
# objects
dn: ou=h350,dc=my-domain,dc=com
objectClass: organizationalUnit
ou: h350
2. Add the ldif file to the server using the command:
slapadd -l <ldif _ file>
This organizational unit will form the BaseDN to which the
VCS will issue searches. In this example the BaseDN will be:
ou=h350,dc=my-domain,dc=com
.
It is good practice to keep the H.350 directory in its own
organizational unit to separate out H.350 objects from
other types of objects. This allows access controls to be
setup which only allow the VCS read access to the BaseDN and
therefore limit access to other sections of the directory.
Add the H.350 objects
1. Create an
ldif
file with the following contents:
# MeetingRoom1 endpoint
dn: commUniqueId=comm1,ou=h350,dc=my-
domain,dc=com
objectClass: commObject
objectClass: h323Identity
objectClass: h235Identity
objectClass: SIPIdentity
commUniqueId: comm1
h323Identityh323-ID: MeetingRoom1
h323IdentitydialedDigits: 626262
h235IdentityEndpointID: meetingroom1
h235IdentityPassword: mypassword
SIPIdentityUserName: meetingroom1
SIPIdentityPassword: mypassword
SIPIdentitySIPURI: sip:MeetingRoom@domain.com
2. Add the
ldif
file to the server using the command:
slapadd -l <ldif _ file>
The example above will add a single endpoint with an H.323
ID alias of
MeetingRoom1
,
an E.164 alias of
626262
and a
SIP URI of
MeetingRoom@domain.com
.
The entry also has
H.235 and SIP credentials of ID
meetingroom1
and password
mypassword
which are used during authentication.
H.323 registrations will look for the H.323 and H.235 attributes;
SIP will look for the SIP attributes. Therefore if your endpoint
is registering with just one protocol you do not need to include
elements relating to the other.
OpenLDAP
For information about what happens when an alias is not
in the LDAP database see the
Alias origin
section.
!
The SIP URI in the
ldif
file must be prefixed by
sip:
.
