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I am using Watchguard firewall and i want to use ip telephony which uses H323. (Cisco ATA 186). It works when i used SIP protocol, but i need to run this H323. Any suggestion.
ThanksI’m not familiar with WatchGuard but we have several customers with ATA units behind firewalls.
You would need to let UDP and TCP traffic through, or punch a hole throught the wall for the specific port you are using.
Useful port numbers can be found at: http://www.iss.net/security_center/advice/Exploits/Ports/default.htm
Hope this helps
Mat.
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