Port Reference - Cisco TelePresence 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 port usage pages.
Note that two services or functions cannot share the same port and protocol; an alarm will be raised if you
attempt to change an existing port or range and it conflicts with another service.
Service/
function
SSH
Telnet
HTTP
NTP
SNMP
TMS Agent (legacy
mode)
HTTPS
Reserved for future use
Cisco VCS Administrator Guide (X7.2)
Description Default
Used for encrypted 22 TCP
command line
administration.
Used for 23 TCP
unencrypted
command line
administration.
Used for 80 TCP
unencrypted web
administration.
Used for updating 123 UDP
the system time
(and important for
H.235 security).
Used for network 161 UDP
management.
Used for 389 TCP
diagnostics.
Used for encrypted 443 TCP
web
administration.
Also used to
replicate FindMe
data if the VCS is
part of a cluster
with FindMe
enabled and is
using the legacy
TMS Agent
database.
636
Direction Available
range
inbound not
configurable
inbound not
configurable
inbound not
configurable
outbound not
configurable
inbound not
configurable
inbound not
configurable
inbound not
configurable
inbound not
configurable
Reference material
Configurable via
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