Information Technology Reference
In-Depth Information
Port
Purpose
22 (TCP)
Secure FTP service, SSH access.
Ephemeral (UDP)
CUCM acting as a DNS server or DNS client.
67 (UDP)
CUCM acting as a DHCP server.
68 (UDP)
CUCM acting as a DHCP client.
69, 6969, then Ephemeral (UDP)
TFTP service to phones and gateways.
123 (UDP)
NTP.
161 (UDP)
SNMP service response (requests from management applications).
199 (TCP)
Native SNMP agent listening port for SMUX support.
Used for communication between Master Agent and Native Agent to process
Native agent MIB requests.
6161 (UDP)
Used for communication between Master Agent and Native Agent to forward
notifications generated from Native Agent.
6162 (UDP)
6666 (UDP)
Netdump server.
6970 (TCP)
Centralized TFTP File Locator Service.
7161 (TCP)
Used for communication between SNMP Master Agent and subagents.
7999 (TCP)
CDP agent communicates with CDP executa ble.
9050 (TCP)
Service CRS requests through the TAPS residing on CUCM.
CUCM applications send out alarms to this port via UDP. CUCM MIB agent
listens on this port and generates SNMP traps per CUCM MIB definition.
61441 (UDP)
Ephemeral
Provide trunk-based SIP services.
Ephemeral (TCP)
LDAP query to external directory (Active Directory, Netscape Directory).
80, 8080 (TCP)
HTTP.
443, 8443 (TCP)
HTTPS.
80 (TCP)
HTTP.
69, then Ephemeral (UDP)
TFTP used to download firmware and configuration files.
Phone URLs for XML applications, authentication, directories, services, and so
on. You can configure these ports on a per-service basis.
8080 (TCP)
2000 (TCP)
SCCP.
2443 (TCP)
SCCPS.
3804 (TCP)
CAPF listening port for issuing LSCs to IP phones.
5060 (TCP and UDP)
SIP phone.
 
 
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