Configurable parameters for Alkit Reflex

The following parameters are available in the configuration file 'reflex.conf'.

Parameter name / format


LICENSE_FILE <filename>

The full path to the license file.

TRAFFIC_DESCR <media type> <pt> [<pt> ]

Defines which RTP payload types should be associated with a particular media type.

UDP_PORT <portnum> <type> <maxclients> <maxlurkers> <mediatype>

Defines a session for a particular UDP port and media type. Limitations can be put on the number of clients and lurkers (receive-only clients) allowed. The <mediatype> parameter identifies a traffic descriptor that defines the permissible RTP types for the session. The predefined traffic descriptor "all" can be used to accept all RTP types.

UDP_RANGE <portnum> [<portnum> ] <maxclients> <maxlurkers> <mediatype>

Same as UDP_PORT but allows a range of UDP port numbers to be specified.

ADMIN_PORT <portnum>

The TCP port number used to administrate the reflector/mixer.

HOSTS_ALLOW all | <network/mask> [<network/mask> ]

Lists the network addresses of hosts that are specifically allowed to connect to the reflector/mixer. The format should be 'network/msk' (e.g. or 'all' for all networks.

HOSTS_DENY all | <network/mask> [<network/mask> ]

Lists the network addresses of hosts that are specifically denied to connect to the reflector/mixer. Same format as HOSTS_ALLOW.

IP_ADDRESS <IP address>

Sets the reflector's IP address. Useful in case the reflector has several network interfaces, or alias IP addresses, or if the reflector for some reason is unable to figure out the proper IP address to use. If not specified, reflex finds the IP address by doing gethostname/gethostbyname (i.e. DNS lookup of the host name).


Same as IP_ADDRESS (see above)

IP_ADDRESS_LOCAL <local IP address>

Specifies the reflector's local IP address. Useful in cases when the reflector is behind a NAT firewall (or on a NAT firewall machine) with several network interfaces, one of which is the externally visible address (specified by IP_ADDRESS or IP_ADDRESS_EXTERNAL, see above) and one is the local area network interface, serving local clients. Using a configuration with two configured IP addresses like this, the reflector can be successfully used as a firewall traversal bridge, interconncting local conference participants with externally connected participants.

Note that IP_ADDRESS_LOCAL requires that IP_ADDRESS (IP_ADDRESS_EXTERNAL) is also specified.


Enables multicast clients.