Port Reference - Cisco TelePresence Administrator's Manual

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Port reference

The VCS uses different IP ports and protocols for different services and functions, and many of these are configurable. The table below lists each
of these services and functions. For each, it shows the default port(s) and protocol used and whether these ports are used for inbound or outbound
communications. If the ports are configurable it shows the available range and how to configure them using the web interface or CLI.
The information in the table below shows all possible services and the generic defaults for each. The actual services and ports used on your
system will vary depending on its configuration, the option keys installed and features that have been enabled. A specific list of all the IP ports
in use on a particular VCS can be viewed via the Maintenance > Tools > Port usage pages. See the
Service/function Description
SSH and FindMe Used for encrypted command line administration.
replication for clusters Also used to replicate FindMe data if the VCS is part
of a cluster with FindMe enabled.
Telnet Used for unencrypted command line administration.
HTTP Used for unencrypted web administration.
NTP Used for updating the system time (and important for
H.235 security).
SNMP Used for network management.
TMS Agent Used for diagnostics.
HTTPS Used for encrypted web administration. Also used to
replicate FindMe data if the VCS is part of a cluster
with FindMe enabled.
Reserved for future use
Gatekeeper discovery Used for multicast gatekeeper discovery.
H.323 registration Listens for inbound H.323 UDP registrations. If the
VCS is part of a cluster, this port is also used for
Clustering
inbound and outbound communication with peers,
even if H.323 is disabled.
H.323 call signaling Listens for H.323 call signaling.
Overview and System
Introduction
status configuration
D14049.08
November 2010
Default
22 TCP
23 TCP
80 TCP
123 UDP
161 UDP
389 TCP
443 TCP
636
1718 UDP
1719 UDP
1720 TCP
Cisco VCS Zones and Clustering and
configuration neighbors peers
Overview
Port usage section for more information.
Ports
Direction Available range Configurable via
inbound not configurable
inbound not configurable
inbound not configurable
outbound not configurable
inbound not configurable
inbound not configurable
inbound not configurable
inbound not configurable
inbound not configurable
inbound 1024 - 65534 VCS configuration > Protocols > H.323
xConfiguration H323 Gatekeeper Registration UDP Port
outbound
VCS configuration > Protocols > H.323
inbound 1024 - 65534
xConfiguration H323 Gatekeeper CallSignaling TCP Port
Call Bandwidth
processing control
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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.
Firewall
Applications Maintenance
traversal
ADMINISTRATOR GUIDE
Appendices