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16-8
Cisco ASA Series Firewall CLI Configuration Guide
Chapter 16 Configuring the Cisco Phone Proxy
Prerequisites for the Phone Proxy
If NAT is configured for the TFTP server or Cisco UCMs, the translated “global” address must be used
in the ACLs.
Table 16-1 lists the ports that are required to be configured on the existing firewall:
Note All these ports are configurable on the Cisco UCM, except for TFTP. These are the default
values and should be modified if they are modified on the Cisco UCM. For example, 3804 is the
default port for the CAPF Service. This default value should be modified if it is modified on the
Cisco UCM.
NAT and PAT Prerequisites
NAT Prerequisites
• If NAT is configured for the TFTP server, the NAT configuration must be configured prior to
configuring the tftp-server command under the phone proxy.
• If NAT is configured for the TFTP server or Cisco UCMs, the translated “global” address must be
used in the ACLs.
PAT Prerequisites
• When the Skinny inspection global port is configured to use a non-default port, then you must
configure the nonsecure port as the
global_sccp_port+443.
Therefore, if global_sccp_port is 7000, then the global secure SCCP port is 7443. Reconfiguring the
port might be necessary when the phone proxy deployment has more than one Cisco UCM and they
must share the interface IP address or a global IP address.
/* use the default ports for the first CUCM */
object network obj-10.0.0.1-01
host 10.0.0.1
nat (inside,outside) static interface service tcp 2000 2000
object network obj-10.0.0.1-02
host 10.0.0.1
nat (inside,outside) static interface service tcp 2443 2443
/* use non-default ports for the 2nd CUCM */
object network obj-10.0.0.2-01
host 10.0.0.2
nat (inside,outside) static interface service tcp 2000 7000
object network obj-10.0.0.2-02
Table 16-1 Port Configuration Requirements
Address Port Protocol Description
Media Termination 1024-65535 UDP Allow incoming SRTP
TFTP Server 69 UDP Allow incoming TFTP
Cisco UCM 2443 TCP Allow incoming secure
SCCP
Cisco UCM 5061 TCP Allow incoming secure
SIP
CAPF Service (on Cisco
UCM)
3804 TCP Allow CAPF service for
LSC provisioning