VIDEO CONFERENCING
Security
Prior to using HEAnet's videoconferencing service, there are a number of security issues involved in allowing H.323 conferencing.
The following ports are used in H.323 conferencing:
H.323 Ports (open in both directions)
| Function | Port | Type |
| HTTP Interface | 80 | TCP |
| Gatekeeper discovery | 1718 | TCP |
| Gatekeeper RAS | 1719 | TCP |
| Q.931 Call Setup | 1720 | TCP |
| Audio Call Control | 1731 | TCP |
| H.245 Control Channel | 1024-65535 | TCP |
| RTP (Video/Audio) | 1024-65535 | UDP |
| H.235 secure signaling | 1300 | TCP |
| T.120 | 1503 | TCP |
Because H.323 uses dynamically assigned ports it is difficult to control. Some solutions to overcome this are as follows:
- Open the ports listed above on your institutions firewall
- Use H.323 aware firewalls, e.g. Cisco Secure IS, Cisco PIX, Checkpoint FW-1, Netscreen
- Use a separate network for H.323 (H.323 DMZ)

John Boland, Chief Executive pictured presenting HEAnet's Special Criteria Award to Matija Milenovic and Shane Gonley from Athlone Community College, Co Westmeath,
HEAnet has recently welcomed its latest client, Co Kildare Vocational Education Committee (VEC) who provide a comprehensive range of education services through Kildare: ![[IPv6 Ready]](http://e-badges.ipv6ready.ie/e/31/a2/e5/e31a2e5dfeeca769df428a284a828dbea7de1964-m.png)