8.6 Port SecurityIf the VoIP network contains a firewall, the firewall must be configured appropriately to allow VoIP packets topass through certain ports of the ports listed below without being blocked by filtering. The ports for which youneed 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 listis ignored.Port Numbers for LAN PortPort Number Protocol Application Client/Server Changeable/Fixed25 TCP/UDP SMTP Server Changeable53 UDP DNS Server Fixed67 UDP DHCP Server Changeable68 UDP DHCP Client Changeable80 TCP HTTP Server Changeable123 UDP NTP Server Fixed143 TCP IMAP Server Changeable161 UDP SNMP Server Changeable443 TCP HTTPS Server Changeable1717 UDP Connectionless UDP - Changeable1718 TCP Connectionless TCP - Changeable1719 UDP H.225 RAS - Changeable1720 TCP H.225 Call Signal - Changeable2103 TCP CMM Server Fixed2300 TCP Telnet-SMDR - Changeable2727 UDP MGCP*1 - Changeable3493 TCP UPS*2 - Fixed3702 UDP WSD Server Changeable4560–4561 UDP PSAP - Changeable4562 UDP SSAP - Changeable5060 UDP SIP UA (EXT) - Changeable7547 TCP CWMP Server Changeable7580 TCP HTTP Server Changeable9300 UDP PTAP - ChangeableInstallation Manual 3298.6 Port Security
