8.6 Port Security
If the VoIP network contains a firewall, the firewall must be configured appropriately to allow VoIP packets to
pass
through certain ports of the ports listed below without being blocked by filtering. The ports for which you
need to configure the firewall may vary depending on the network conditions.
For more information, consult your network administrator.
The following table shows the PBX’s ports used for IP communications. Any access to the ports not in this list
is ignored.
Port Numbers for LAN Port
Port Number Protocol Application Client/Server
Changeable/
Fixed
25 TCP/UDP SMTP Server Changeable
53 UDP DNS Server Fixed
67 UDP DHCP Server Changeable
68 UDP DHCP Client Changeable
80 TCP HTTP Server Changeable
123 UDP NTP Server Fixed
143 TCP IMAP Server Changeable
161 UDP SNMP Server Changeable
443 TCP HTTPS Server Changeable
1717 UDP Connectionless UDP - Changeable
1718 TCP Connectionless TCP - Changeable
1719 UDP H.225 RAS - Changeable
1720 TCP H.225 Call Signal - Changeable
2103 TCP CMM Server Fixed
2300 TCP Telnet-SMDR - Changeable
2727 UDP MGCP
*1
- Changeable
3493 TCP UPS
*2
- Fixed
3702 UDP WSD Server Changeable
4560–4561 UDP PSAP - Changeable
4562 UDP SSAP - Changeable
5060 UDP SIP UA (EXT) - Changeable
7547 TCP CWMP Server Changeable
7580 TCP HTTP Server Changeable
9300 UDP PTAP - Changeable
Document Version 2016-03 Installation Manual 299
8.6 Port Security
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