User`s manual

H.323 User's Manual 13. Security
Version 5.0 339 December 2006
13.5 Network Port Usage
The following table lists the default TCP/UDP network port numbers used by the Mediant
1000. Where relevant, the table lists the ini file parameters that control the port usage and
provide source IP address filtering capabilities.
Table 13-5: Default TCP/UDP Network Port Numbers
Port Number Peer
Port
Application Notes
2 2 Debugging interface Always ignored
23 - Telnet
Disabled by default (TelnetServerEnable).
Configurable (TelnetServerPort), access
controlled by WebAccessList
68 67 DHCP Active only if DHCPEnable = 1
80 - Web server (HTTP)
Configurable (HTTPPort), can be disabled
(DisableWebTask or HTTPSOnly). Access
controlled by WebAccessList
161 - SNMP GET/SET
Configurable (SNMPPort), can be disabled
(DisableSNMP). Access controlled by
SNMPTrustedMGR
443 - Web server (HTTPS)
Configurable (HTTPSPort), can be disabled
(DisableWebTask). Access controlled by
WebAccessList
500 - IPSec IKE
Can be disabled (EnableIPSec)
Not supported in the current version.
1719 1719
H.323 RAS Source
Port
Configurable (RASSourcePort).
Refer to the note below.
1720 1720 H.225 Signaling Dial
Configurable (H225DialPort).
Refer to the note below.
1720 1720
H.225 Signaling
Listen
Configurable (H225ListenPort).
Refer to the note below.
4000, 4010 and up - RTP traffic
Base port number configurable
(BaseUDPPort), fixed increments of 10. The
number of ports used depends on the channel
capacity of the device.
4001, 4011 and up - RTCP traffic Always adjacent to the RTP port number
4002, 4012 and up - T.38 traffic Always adjacent to the RTCP port number
(random) > 32767 514 Syslog Disabled by default (EnableSyslog).
(random) > 32767 - Syslog ICMP Disabled by default (EnableSyslog).
(random) > 32767 - ARP listener
(random) > 32767 162 SNMP Traps Can be disabled (DisableSNMP)
(random) > 32767 - DNS client
(random) > 32767 - H.245 Signaling Port Refer to the note below.
Note: All dynamic H.323 ports use the parameter H323BasePort. This parameter
is the starting TCP / UDP transport port for H.225/H.245 messages (used
for RAS, H.225 and H.245 protocols). Mediant 1000 gateways use 500
dynamic ports (except for RTP ports) starting from this port. If
H323BasePort = 0, or if a value isn’t specified, the default ports are used.
The default port range is 32000 to 65000. For example: If H323BasePort =
10000, the H.323 gateway uses dynamic ports in the range 10000 to
10500.