Cisco Cisco Expressway Manual De Manutenção
Service/
function
function
Purpose
Expressway port
(default)
(default)
Direction
Configurable via
SSH
Encrypted command line 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
TLS between cluster peers for database
synchronization.
synchronization.
4371-4372 TCP
inbound
outbound
outbound
not configurable
Reserved
636
inbound
not configurable
Clustering
If the Expressway is part of a cluster,
this port is used for inbound and
outbound communication with peers,
even if H.323 is disabled.
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
DNS
Sending requests to DNS servers.
1024 - 65535 UDP
outbound System > DNS
Gatekeeper
discovery
discovery
Multicast gatekeeper discovery. The
Expressway does not listen on this port
when H.323 Gatekeeper Auto discover
mode is set to Off (this disables IGMP
messages).
Expressway 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 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 Expressway-E.
2776 TCP
inbound
Configuration >
Traversal > Ports
Traversal > Ports
H.460.18 call
signaling
signaling
H.460.18 signaling on the Expressway-
E.
E.
2777 TCP
inbound
Configuration >
Traversal > Ports
Traversal > Ports
Traversal
server media
demultiplexing
RTP/RTCP
server media
demultiplexing
RTP/RTCP
Optionally used on the Expressway-E for
demultiplexing RTP/RTCP media on
Small/Medium systems only.
demultiplexing RTP/RTCP media on
Small/Medium systems only.
2776/2777 UDP
inbound
outbound
outbound
Configuration >
Traversal > Ports
Traversal > Ports
TURN services Listening port for TURN relay requests
on Expressway-E.
3478 UDP/TCP *
inbound
Configuration >
Traversal > TURN
Traversal > TURN
System
database
database
Encrypted administration connector to
the Expressway system database.
the Expressway system database.
4444 TCP
inbound
not configurable
SIP UDP
Listens for incoming SIP UDP calls.
5060 UDP
inbound
outbound
outbound
Configuration >
Protocols > SIP
Protocols > SIP
SIP TCP
Listens for incoming SIP TCP calls.
5060 TCP
inbound
Configuration >
Protocols > SIP
Protocols > SIP
Table 18 Local inbound/outbound ports
336
Cisco Expressway Administrator Guide
Reference Material