Cisco Cisco TelePresence Video Communication Server Expressway
11
SIP – additional ports for ICE
(from VCS X6.0)
public
Internet
VCS Expressway
source port
Internet endpoint
server (listening) port
VCS Expressway
server (listening) port
Internet endpoint
source port
message direction
Outbound from VCS to endpoint in
internet
Inbound from an endpoint in internet to
VCS
Open firewall
DMZ to Internet
Internet to DMZ
IP address
IP address of
VCS Expressway
Any IP address
IP address of
VCS Expressway
Any IP address
IP Po
rt
s
TURN server
control
control
N/A
N/A
UDP
3478
UDP M
>= 1024
TURN server
media
media
UDP
60000 to 61799
UDP N
>= 1024
UDP
60000 to 61799
UDP N
>= 1024
VCS Control
VCS Expressway
DMZ
M = IP port of signalling from endpoint – may be
ephemeral IP port of endpoint (if no firewall),
or IP port of the outside firewall :
= any IP port above 1024
or IP port of the outside firewall :
= any IP port above 1024
N = IP port of relevant ICE candidate – host IP
port, Server reflexive IP port (outside firewall
port) or TURN server port:
= any IP port above 1024
port) or TURN server port:
= any IP port above 1024