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D14049.03
MAY 2008
Grey Headline
(continued)
TANDBERG
VIDEO COMMUNICATIONS SERVER
ADMINISTRATOR GUIDE
VCS Port Reference
The VCS uses different ports and protocols for different services and functions, and many of these are configurable.
The table below shows all the ports on the VCS that are used for each of these services and functions. It shows the default port(s)
and protocol used, and if the ports are configurable it shows the available range and how to configure them via the web UI or CLI.
Overview
Service/Function
Description
Default
Available Range
Configurable via
SSH
for encrypted command line administration
22 TCP
not configurable
Telnet
used for unencrypted command line
administration
23 TCP
not configurable
HTTP
used for unencrypted Web administration
80 TCP
not configurable
SNMP
used for network management
161 UDP
not configurable
NTP
used for updating the system time (and
important for H.235 security)
123 UDP
not configurable
HTTPS
used for encrypted Web administration
443 TCP
not configurable
Remote Logging
used to send message to the remote syslog
server
514 UDP
not configurable
Gatekeeper discovery
Multicast Gatekeeper discovery
1718 UDP
not configurable
H323 Registration and
Alternate communication
used to listen for inbound H.323 UDP
registrations. Also used for inbound and
outbound communication with Alternates, even if
H.323 is disabled
1719 UDP
1024 - 65534
VCS Configuration > Protocols > H.323
xConfiguration H323 Gatekeeper Registration UDP Port
H.323 call signaling
listens for H.323 call signaling
1720 TCP
1024 - 65534
VCS Configuration > Protocols > H.323
xConfiguration H323 Gatekeeper CallSignaling TCP Port
Traversal Server Media
Demultiplexing RTP
used on the VCS Expressway for demultiplexing
RTP media
2776 UDP
1024 - 65534
VCS Configuration > Expressway > Ports
xConfiguration Traversal Server Media Demultiplexing RTP Port
Assent call signaling
used on the VCS Expressway for Assent signaling 2776 TCP
1024 - 65534
VCS Configuration > Expressway > Ports
xConfiguration Traversal Server H323 Assent CallSignaling Port
H.460.18 call signaling
used on the VCS Expressway for H.460.18
signaling
2777 TCP
1024 - 65534
VCS Configuration > Expressway > Ports
xConfiguration Traversal Server H323 H46018 CallSignaling Port
VCS Ports
!
Two services or functions cannot share the same port
and protocol; if you attempt to change an existing port or
range and it conflicts with another service, you will get a
warning message.