Cisco Cisco TelePresence Video Communication Server Expressway 릴리즈 노트
Port reference
Cisco TelePresence Video Communication Server Software Release Notes (X8.2)
Page 21 of 30
Local VCS inbound/outbound ports
These are the IP ports on the VCS used to receive (inbound) or send (outbound) communications with other
systems.
systems.
Service/
function
function
Purpose
VCS port (default)
Direction Configurable via
SSH
Encrypted command line
administration.
administration.
22 TCP
inbound
not configurable
HTTP
Unencrypted web administration.
80 TCP
inbound
not configurable
NTP
System time updates (and important for
H.235 security).
H.235 security).
123 UDP
outbound not configurable
SNMP
Network management.
161 UDP
inbound
not configurable
HTTPS
Encrypted web administration.
443 TCP
inbound
not configurable
Clustering
IPsec secure communication between
cluster peers.
cluster peers.
500 UDP
inbound
outbound
outbound
not configurable
Clustering
IPsec secure communication between
cluster peers.
cluster peers.
IP protocol 51
(IPSec AH)
(IPSec AH)
inbound
outbound
outbound
not configurable
Reserved
636
inbound
not configurable
DNS
Sending requests to DNS servers.
1024 - 65535 UDP
outbound
System > DNS
Gatekeeper
discovery
discovery
Multicast gatekeeper discovery. The
VCS does not listen on this port when
H.323 Gatekeeper Auto discover
mode is set to Off (this disables IGMP
messages).
VCS does not listen on this port when
H.323 Gatekeeper Auto discover
mode is set to Off (this disables IGMP
messages).
1718 UDP
inbound
not configurable
H.323
registration
Clustering
registration
Clustering
Listens for inbound H.323 UDP
registrations. If the VCS is part of a
cluster, this port is used for inbound and
outbound communication with peers,
even if H.323 is disabled.
registrations. If the VCS is part of a
cluster, this port is used for inbound and
outbound communication with peers,
even if H.323 is disabled.
1719 UDP
inbound
outbound
outbound
Configuration >
Protocols > H.323
Protocols > H.323
H.323 call
signaling
signaling
Listens for H.323 call signaling.
1720 TCP
inbound
Configuration >
Protocols > H.323
Protocols > H.323
Assent call
signaling
signaling
Assent signaling on the VCS
Expressway.
Expressway.
2776 TCP
inbound
Configuration >
Traversal > Ports
Traversal > Ports
H.460.18 call
signaling
signaling
H.460.18 signaling on the VCS
Expressway.
Expressway.
2777 TCP
inbound
Configuration >
Traversal > Ports
Traversal > Ports
Traversal
server media
demultiplexing
RTP/RTCP
server media
demultiplexing
RTP/RTCP
Optionally used on the VCS
Expressway for demultiplexing
RTP/RTCP media on Small/Medium
systems only.
Expressway for demultiplexing
RTP/RTCP media on Small/Medium
systems only.
2776/2777 UDP
inbound
outbound
outbound
Configuration >
Traversal > Ports
Traversal > Ports
TURN
services
services
Listening port for TURN relay requests
on VCS Expressway.
on VCS Expressway.
3478 UDP *
inbound
Configuration >
Traversal > TURN
Traversal > TURN
Table 6: Local inbound/outbound ports