Firewalls and port numbers for H.323 data sharing:

Discussions of the H.323/Firewall problem can be found at:

http://erris.med.virginia.edu/tech/FIREWALL.HTM

http://www.h323forum.org/papers/firewall_nat_traversal.pdf

http://www.h323forum.org/papers/firewall_nat_vtel.zip

http://www.vtel.com/support/galaxy/H323_Proxies_Firewalls.htm

http://www.vcon.com/pdfdoc/eng/wp/020227.eng.wp.Firewalls.and.Proxy.Servers.zip

Further information on the ports and their services can be found at:

http://www.teamsolutions.co.uk/tsfirewall.html

http://www.surfnet.nl/innovatie/surfworks/showcase/h4.html

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=21405