Port Reference - Cisco TelePresence Video Communication Server Administrator's Manual

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
Note: 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.
Service/ Description
function
SSH and Used for encrypted
FindMe command line
replication for administration. Also
clusters 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
Cisco VCS Administrator Guide (X6.1)
port usage pages.
Default Direction Available
22 TCP inbound
23 TCP inbound
80 TCP inbound
123 UDP outbound
161 UDP inbound
389 TCP inbound
443 TCP inbound
636 inbound
Reference material
Configurable via
range
not
configurable
not
configurable
not
configurable
not
configurable
not
configurable
not
configurable
not
configurable
not
configurable
Page 269 of 401