Cisco Cisco Expressway
Port reference
Cisco Expressway X8.1 Software Release Notes
Page 5 of 11
Service/
function
function
Purpose
Expressway port
(default)
(default)
Direction Configurable via
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
call
signaling
H.460.18 signaling on the Expressway-E.
2777 TCP
inbound
Configuration >
Traversal > Ports
Traversal > Ports
TURN
services
services
Listening port for TURN relay requests on
Expressway-E.
Expressway-E.
3478 UDP *
inbound
Configuration >
Traversal > TURN
Traversal > TURN
System
database
database
Encrypted administration connector to the
Expressway system database.
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
SIP TLS
Listens for incoming SIP TLS calls.
5061 TCP
inbound
Configuration >
Protocols > SIP
Protocols > SIP
B2BUA
Internal ports used by the B2BUA. Traffic
sent to these ports is blocked
automatically by the Expressway's non-
configurable firewall rules.
sent to these ports is blocked
automatically by the Expressway's non-
configurable firewall rules.
5071, 5073 TCP
inbound
not configurable
Traversal
server zone
H.323 Port
server zone
H.323 Port
Port on the Expressway-E used for H.323
firewall traversal from a particular traversal
client.
firewall traversal from a particular traversal
client.
6001 UDP,
increments by 1 for
each new zone
increments by 1 for
each new zone
inbound
Configuration >
Zones
Zones
Traversal
server zone
SIP Port
server zone
SIP Port
Port on the Expressway-E used for SIP
firewall traversal from a particular traversal
client.
firewall traversal from a particular traversal
client.
7001 TCP,
increments by 1 for
each new zone
increments by 1 for
each new zone
inbound
Configuration >
Zones
Zones
H.225 and
H.245 call
signaling
port range
H.245 call
signaling
port range
Range of ports used for call signaling after
a call is established.
a call is established.
15000 - 19999 TCP
inbound
outbound
outbound
Configuration >
Protocols > H.323
Protocols > H.323
SIP TCP
outbound
port range
outbound
port range
Range of ports used by outbound
TCP/TLS SIP connections to a remote SIP
device.
TCP/TLS SIP connections to a remote SIP
device.
25000 - 29999 TCP
outbound
Configuration >
Protocols > SIP
Protocols > SIP
Ephemeral
ports
ports
Various purposes.
30000 – 35999
outbound
System >
Administration
Administration
Table 2: Local inbound/outbound ports (continued)