Cisco Cisco Expressway Maintenance Manual
Field
Description
Usage tips
TURN
requests port
requests port
The listening port for TURN requests. The default is
3478.
3478.
On Large systems you can configure a range of TURN
request listening ports. The default range is 3478 –
3483.
request listening ports. The default range is 3478 –
3483.
To allow endpoints such as Jabber
Video to discover TURN services,
you need to set up DNS SRV records
for _turn._udp. and _turn._tcp (either
for the single port, or range of ports
as appropriate).
Video to discover TURN services,
you need to set up DNS SRV records
for _turn._udp. and _turn._tcp (either
for the single port, or range of ports
as appropriate).
If you need to change the Turn
requests port (o range, for Large
systems) while the Turn services are
already On:
requests port (o range, for Large
systems) while the Turn services are
already On:
1. Change Turn services to Offand
Save
2. Edit the port number/range
3. Change Turn services to Onand
Save
This is because changes to the port
numbers do not come into effect until
the TURN services are restarted.
numbers do not come into effect until
the TURN services are restarted.
Authentication
realm
realm
This is the realm sent by the server in its authentication
challenges.
challenges.
Ensure that the client's credentials
are stored in the local authentication
database.
are stored in the local authentication
database.
Media port
range start /
end
range start /
end
The lower and upper port in the range used for the
allocation of TURN relays.
allocation of TURN relays.
The default TURN relay media port range is 24000 –
29999.
29999.
TURN server status
A summary of the TURN server status is displayed at the bottom of the
TURN
page. When the TURN server
is active, the summary also displays the number of active TURN clients and the number of active relays.
TURN relays on the Expressway. You can also review further details of each TURN relay including
permissions, channel bindings and counters.
permissions, channel bindings and counters.
Cisco Expressway Administrator Guide (X8.5)
Page 57 of 394
Firewall traversal
About ICE and TURN services